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Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Selective photooxidation of hydrocarbons in zeolites by oxygen  

DOE Patents [OSTI]

A selective photooxidation process for the conversion of hydrocarbon molecules to partially oxygenated derivatives, which comprises the steps of adsorbing a hydrocarbon and oxygen onto a dehydrated zeolite support matrix to form a hydrocarbon-oxygen contact pair, and subsequently exposing the hydrocarbon-oxygen contact pair to visible light, thereby forming a partially oxygenated derivative.

Frei, Heinz (Berkeley, CA); Blatter, Fritz (Berkeley, CA); Sun, Hai (Berkeley, CA)

1998-01-01T23:59:59.000Z

2

Method and apparatus for producing oxygenates from hydrocarbons  

DOE Patents [OSTI]

A chemical reactor for oxygenating hydrocarbons includes: (a) a dielectric barrier discharge plasma cell, the plasma cell comprising a pair of electrodes having a dielectric material and void therebetween, the plasma cell comprising a hydrocarbon gas inlet feeding to the void; (b) a solid oxide electrochemical cell, the electrochemical cell comprising a solid oxide electrolyte positioned between a porous cathode and a porous anode, an oxygen containing gas inlet stream feeding to the porous cathode side of the electrochemical cell; (c) a first gas passageway feeding from the void to the anode side of the electrochemical cell; and (d) a gas outlet feeding from the anode side of the electrochemical cell to expel reaction products from the chemical reactor. A method of oxygenating hydrocarbons is also disclosed. 4 figs.

Kong, P.C.; Lessing, P.A.

1995-06-27T23:59:59.000Z

3

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents [OSTI]

A gas sensor measures O.sub.2 content of a reformable monitored gas containing hydrocarbons H.sub.2 O and/or CO.sub.2, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system.

Ruka, Roswell J. (Pittsburgh, PA); Basel, Richard A. (Pittsburgh, PA)

1996-01-01T23:59:59.000Z

4

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents [OSTI]

A gas sensor measures O{sub 2} content of a reformable monitored gas containing hydrocarbons, H{sub 2}O and/or CO{sub 2}, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system. 4 figs.

Ruka, R.J.; Basel, R.A.

1996-03-12T23:59:59.000Z

5

Determination of Hydrocarbons Types and Oxygenates in Motor Gasoline: A Comparative Study by Different Analytical Techniques  

Science Journals Connector (OSTI)

Various standard and published methods based on chromatographic and spectroscopic techniques are routinely used for hydrocarbon types (aromatics, olefins, oxygenates, etc.) in gasoline range fuel products for the assessment of product quality monitoring (...

V. Bansal; G. J. Krishna; A. P. Singh; A. K. Gupta; A. S. Sarpal

2007-12-04T23:59:59.000Z

6

Selective thermal and photooxidation of hydrocarbons in zeolites by oxygen  

DOE Patents [OSTI]

A process is described for selective thermal oxidation or photooxidation of hydrocarbons adsorbed onto zeolite matrices. A highly selective thermal oxidation and photooxidation of unsubstituted or alkyl substituted alkanes, alkenes, aromatics and cycloalkyls in solvent free zeolites under dark thermal conditions or under irradiation with visible light. The process oxidizes hydrocarbons almost completely selectively without substantial production of byproducts. 19 figs.

Frei, H.; Blatter, F.; Sun, H.

1999-06-22T23:59:59.000Z

7

Conversion of Mixed Oxygenates Generated from Synthesis Gas to Fuel Range Hydrocarbon  

SciTech Connect (OSTI)

The growing dependence in the U.S. on foreign crude oil supplies and increased concerns regarding greenhouse gas emission has generated considerable interest in research to develop renewable and environmentally friendly liquid hydrocarbon transportation fuels. One of the strategies for achieving this is to produce intermediate compounds such as alcohols and other simple oxygenates from biomass generated synthesis gas (mixture of carbon monoxide and hydrogen) and further convert them into liquid hydrocarbons. The focus of this research is to investigate the effects of mixed oxygenates intermediate product compositions on the conversion step to produce hydrocarbon liquids. A typical mixed oxygenate stream is expected to contain water (around 50%), alcohols, such as methanol and ethanol (around 35%), and smaller quantities of oxygenates such as acetaldehyde, acetic acid and ethyl acetate. However the ratio and the composition of the mixed oxygenate stream generated from synthesis gas vary significantly depending on the catalyst used and the process conditions. Zeolite catalyzed deoxygenation of methanol accompanied by chain growth is well understood under Methanol-to-Gasoline (MTG) like reaction conditions using an H-ZSM-5 zeolite as the catalyst6-8. Research has also been conducted to a limited extent in the past with higher alcohols, but not with other oxygenates present9-11. Also there has been little experimental investigation into mixtures containing substantial amounts of water. The latter is of particular interest because water separation from the hydrocarbon product would be less energy intensive than first removing it from the oxygenate intermediate stream prior to hydrocarbon synthesis, potentially reducing overall processing costs.

Ramasamy, Karthikeyan K.; Gerber, Mark A.; Lilga, Michael A.; Flake, Matthew D.

2012-08-19T23:59:59.000Z

8

Process for alternately steam reforming sulfur containing hydrocarbons that vary in oxygen content  

SciTech Connect (OSTI)

In the hydrotreating and steam reforming of an oxygen and sulfur bearing hydrocarbon fuel, the oxygen is first removed in an oxidizer containing a bed of platinum catalyst, the inlet temperature being well below 1000/sup 0/F and preferably on the order of 300/sup 0/F. The sulfur in the fuel does not harm the oxidizer catalyst and may be removed downstream by known hydrodesulfurization techniques prior to reforming. A process is described for removing oxygen from an oxygen and sulfur bearing hydrocarbon fuel, such as peak shared natural gas, upstream in the process so that sulfur can be removed later. The fuel and some hydrogen are introduced into an oxidizer at a temperature of 350/sup 0/F or less down to the minimum ignition temperature. The oxidizer consists of a platinum bed catalyst which catalyzes the oxidation of the oxygen to water with accompanying heat release to raise the exit gas temperature to less than 650/sup 0/F. The temperature desorbs the sulfur from the catalyst, and the exit gases are passed downstream to nickel subsulfide or molybdenum desfulfide catalysts where the hydrosulfurization process takes place. (BLM)

Lesieur, R.R.; Setzer, H.J.; Hawkins, J.R.

1980-01-01T23:59:59.000Z

9

Emission of Oxygenated Polycyclic Aromatic Hydrocarbons from Indoor Solid Fuel Combustion  

Science Journals Connector (OSTI)

(17) The relatively high OPAH emissions from indoor burning can be explained by the different amount of oxygen supply resulting in lower combustion efficiencies and relatively high temperature in the enclosed residential stoves due to low heat loss. ... hydrocarbon (PAH) emission source in developing countries; however, PAH emission factor (EF) data for indoor crop residue combustion, particularly field-measured data, are scarce, leading to large uncertainties in emission inventories. ... Shen, G.; Wang, W.; Yang, Y.; Zhu, C.; Min, Y.; Xue, M.; Ding, J.; Li, W.; Wang, B.; Shen, H.; Wang, R.; Wang, X.; Tao, S.Emission factors and particulate matter size distribution of polycyclic aromatic hydrocarbons from residential coal combustions in rural Northern China Atmos. ...

Guofeng Shen; Shu Tao; Wei Wang; Yifeng Yang; Junnan Ding; Miao Xue; Yujia Min; Chen Zhu; Huizhong Shen; Wei Li; Bin Wang; Rong Wang; Wentao Wang; Xilong Wang; Armistead G. Russell

2011-03-04T23:59:59.000Z

10

Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds with water  

E-Print Network [OSTI]

1 Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds The GC-PPC-SAFT model has been shown to be useful for predicting the liquid- liquid phase split: Group Contribution, GC-PPC-SAFT, binary interaction parameter, LLE, oxygenated compounds. hal-01030846

Boyer, Edmond

11

Nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in the ambient air of two  

E-Print Network [OSTI]

polycyclic aromatic hydrocarbons; Size distribution; Atmospheric pollution; POVA (POllution des Vallées, published in "Atmospheric Environment 42, 173 (2008) 55 à 64" DOI : 10.1016/j.atmosenv.2007.10.008 #12 was determined during the intensive sampling campaigns of the POVA (POllution des Vallées Alpines) research

Boyer, Edmond

12

Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds with water  

Science Journals Connector (OSTI)

Abstract The GC-PPC-SAFT model has been shown to be useful for predicting the liquidliquid phase split with water [Nguyen-Huynh et al. Ind. Eng. Chem. Res. 50 (2011) 74677483]. In order to extend the use of this model to oxygenated compounds for a large number of families (aliphatic ethers, aldehydes, ketones, formates, acetates, propionates/butyrates, n-aliphatic acids), it is proposed to consider cross-association in addition to a binary interaction parameter lij on the combining rules for the cross-segment diameter between water and the investigated compound. The binary interaction parameters lij, u ? ? , and w ? ? are fitted on mutual solubilities of water and organic compounds. The regressed values which are obtained for each chemical family, are subsequently used for predicting infinite dilution activity coefficient in water and n-octanol/water partition coefficient. In general, the results obtained are very much improved compared to the predictive approach discussed previously [Nguyen et al. Ind. Eng. Chem. Res. 52 (2013) 70147029]. The global deviation values on the decimal log scale for infinite dilution activity coefficient in water, water solubility and n-octanol/water partition coefficient are 0.377, 0.419, and 0.469, respectively.

Thanh-Binh Nguyen; Jean-Charles de Hemptinne; Benoit Creton; Georgios M. Kontogeorgis

2014-01-01T23:59:59.000Z

13

Sliding discharges in steam: effects of dielectric surface and hydrocarbon additives on hydrogen, oxygen and hydrogen peroxide generation  

Science Journals Connector (OSTI)

A sliding surface discharge was formed on a dielectric layer in steam at ~100C and atmospheric pressure. The material properties and the thickness of the dielectric layer were found to strongly affect the energy deposition into the plasma. With a 0.32cm thick dielectric the energy deposition was 1.4 times greater than with a 0.48cm thick dielectric, and with window glass it was 1.3 times greater than with Macor of the same thickness. Product gases were H2 (734%) and O2 (271%), and H2O2 accumulated in the condensed water up to 0.4gl?1. The energy yield for hydrogen was 1.20.1g H2kWh?1 and independent of the input power and thickness or material of the dielectric. However, for hydrogen peroxide the energy yield, which varied between 0.61 and 3.2g H2O2kWh?1, was found to depend strongly on the thickness and material of the dielectric. The addition of benzene to the steam increased the energy efficiency of hydrogen to 2.3gkWh?1, and decreased oxygen and hydrogen peroxide by about 3 and 6 times, respectively. It also caused the deposition of phenol and polymer-like layers on the dielectric. The results are explained on the basis of reactions of H and OH radicals adsorbed on the surface and/or in gas phase.

Muhammad Arif Malik; Karl H Schoenbach

2013-01-01T23:59:59.000Z

14

Polycyclic Aromatic Triptycenes: Oxygen Substitution Cyclization Strategies  

E-Print Network [OSTI]

The cyclization and planarization of polycyclic aromatic hydrocarbons with concomitant oxygen substitution was achieved through acid catalyzed transetherification and oxygen-radical reactions. The triptycene scaffold ...

VanVeller, Brett

15

Countries Diesel Prices Excluding Taxes  

Gasoline and Diesel Fuel Update (EIA)

excluding taxes) excluding taxes) Date Belgium France Germany Italy Netherlands UK US 01/13/14 3.56 3.46 3.55 3.80 3.63 3.57 3.40 01/06/14 3.70 3.49 3.62 3.82 3.63 3.55 3.43 12/30/13 NA NA NA NA NA NA 3.42 12/23/13 NA NA NA NA NA NA 3.39 12/16/13 3.63 3.50 3.71 3.85 3.71 3.56 3.38 12/9/13 3.83 3.53 3.77 3.86 3.72 3.57 3.39 12/2/13 3.70 3.46 3.75 3.80 3.67 3.53 3.40 11/25/13 3.60 3.38 3.74 3.75 3.61 3.48 3.36 11/18/13 3.74 3.36 3.67 3.70 3.55 3.45 3.33 11/11/13 3.57 3.34 3.57 3.66 3.51 3.42 3.34 11/4/13 3.60 3.36 3.65 3.69 3.58 3.43 3.37 10/28/13 3.60 3.48 3.71 3.84 3.67 3.53 3.38 10/21/13 3.64 3.50 3.75 3.84 3.70 3.54 3.40 10/14/13 3.70 3.45 3.74 3.82 3.70 3.51 3.40 10/7/13 3.63 3.46 3.75 3.83 3.70 3.52 3.41

16

Hydrous pyrolysis/oxidation process for in situ destruction of chlorinated hydrocarbon and fuel hydrocarbon contaminants in water and soil  

DOE Patents [OSTI]

In situ hydrous pyrolysis/oxidation process is useful for in situ degradation of hydrocarbon water and soil contaminants. Fuel hydrocarbons, chlorinated hydrocarbons, polycyclic aromatic hydrocarbons, petroleum distillates and other organic contaminants present in the soil and water are degraded by the process involving hydrous pyrolysis/oxidation into non-toxic products of the degradation. The process uses heat which is distributed through soils and water, optionally combined with oxygen and/or hydrocarbon degradation catalysts, and is particularly useful for remediation of solvent, fuel or other industrially contaminated sites.

Knauss, Kevin G. (Livermore, CA); Copenhaver, Sally C. (Livermore, CA); Aines, Roger D. (Livermore, CA)

2000-01-01T23:59:59.000Z

17

Clean Water Act (excluding Section 404)  

SciTech Connect (OSTI)

This Reference Book contains a current copy of the Clean Water Act (excluding Section 404) and those regulations that implement the statutes and appear to be most relevant to US Department of Energy (DOE) activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. Updates that include important new requirements will be provided periodically. Questions concerning this Reference Book may be directed to Mark Petts, EH-231 (202/586-2609).

Not Available

1993-01-15T23:59:59.000Z

18

Naphthenic hydrocarbons  

SciTech Connect (OSTI)

An important type of naphthenic hydrocarbons is the monocyclic type, (k/sub 2/, 0, 0). In this instance the number of carbon atoms, n = k/sub 2/, and a formula, C/sub n/H/sub 2n/, can be written where H/C = 2. The value n can vary from 2 to infinity. In the case of n = 2, it is ethylene (I) (2-membered cyclic ring); n = 3, cyclopropane (II) (3-membered cyclic ring); n = 4, cyclobutane (III) (4-membered cyclic ring); etc. If the monocyclic naphthenic is planar, then the bond angle theta can be expressed as theta = (1 - 2/n)..pi.. where n is the number of carbon atoms. However, the tetrahedron angle of the carbon atom being phi = cos/sup -1/ (- 1/3).

Yen, T.F.; Kuo, J.F.; Chilingarian, G.V.

1987-01-01T23:59:59.000Z

19

Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Administration Petroleum Marketing Annual 1995 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding...

20

Plasma-assisted conversion of solid hydrocarbon to diamond  

DOE Patents [OSTI]

A process of preparing diamond, e.g., diamond fiber, by subjecting a hydrocarbon material, e.g., a hydrocarbon fiber, to a plasma treatment in a gaseous feedstream for a sufficient period of time to form diamond, e.g., a diamond fiber is disclosed. The method generally further involves pretreating the hydrocarbon material prior to treatment with the plasma by heating within an oxygen-containing atmosphere at temperatures sufficient to increase crosslinking within said hydrocarbon material, but at temperatures insufficient to melt or decompose said hydrocarbon material, followed by heating at temperatures sufficient to promote outgassing of said crosslinked hydrocarbon material, but at temperatures insufficient to convert said hydrocarbon material to carbon.

Valone, Steven M. (Santa Fe, NM); Pattillo, Stevan G. (Los Alamos, NM); Trkula, Mitchell (Los Alamos, NM); Coates, Don M. (Santa Fe, NM); Shah, S. Ismat (Wilmington, DE)

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Oxidative dehydrogenation of alkanes to unsaturated hydrocarbons  

DOE Patents [OSTI]

Oxidative dehydrogenation of alkanes to unsaturated hydrocarbons is carried out over metal vanadate catalysts under oxidizing conditions. The vanadate catalysts are represented by the formulas M[sub 3](VO[sub 4])[sub 2] and MV[sub 2]O[sub 6], M representing Mg, Zn, Ca, Pb, or Cd. The reaction is carried out in the presence of oxygen, but the formation of oxygenate by-products is suppressed.

Kung, H.H.; Chaar, M.A.

1988-10-11T23:59:59.000Z

22

Process for making unsaturated hydrocarbons using microchannel process technology  

DOE Patents [OSTI]

The disclosed invention relates to a process for converting a feed composition comprising one or more hydrocarbons to a product comprising one or more unsaturated hydrocarbons, the process comprising: flowing the feed composition and steam in contact with each other in a microchannel reactor at a temperature in the range from about 200.degree. C. to about 1200.degree. C. to convert the feed composition to the product, the process being characterized by the absence of catalyst for converting the one or more hydrocarbons to one or more unsaturated hydrocarbons. Hydrogen and/or oxygen may be combined with the feed composition and steam.

Tonkovich, Anna Lee (Dublin, OH); Yuschak, Thomas (Lewis Center, OH); LaPlante, Timothy J. (Columbus, OH); Rankin, Scott (Columbus, OH); Perry, Steven T. (Galloway, OH); Fitzgerald, Sean Patrick (Columbus, OH); Simmons, Wayne W. (Dublin, OH); Mazanec, Terry (Solon, OH) Daymo, Eric (Dublin, OH)

2011-04-12T23:59:59.000Z

23

Combustion of viscous hydrocarbons  

SciTech Connect (OSTI)

A method is described for utilizing viscous hydrocarbons as combustible fuels comprising: (A) forming a hydrocarbosol using a surfactant package in a proportion of about 1:100 to about 1:20,000 by weight based on hydrocarbon, (1) the surfactant package comprising (a) at least one water-soluble surfactant, an effective amount of which surfactant promotes emulsification of a hydrocarbon with API gravity of about 20/sup 0//sup o/ API or less; and (b) at least one water-soluble bioemulsifier, being a microboally-derived substance which predominantly resides at hydrocarbon/water interfaces to substantially surround hydrocarbon droplets in hydrocarbon-in-water emulsions; (2) the hydrocarbosol (a) comprising a hydrocarbon characterized by an API gravity of about 20/sup 0//sup o/ API or less; (b) having a hydrocarbon:water ratio of about 70:30 by volume; and (B) burning the resultant hydrocarbosol.

Hayes, M.E.; Hrebenar, K.R.; Murphy, P.L.; Futch, L.E. Jr.; Deal, J.F. III

1986-10-21T23:59:59.000Z

24

Identification of Novel Methane-, Ethane-, and Propane-Oxidizing Bacteria at Marine Hydrocarbon Seeps by Stable Isotope Probing  

Science Journals Connector (OSTI)

...detector. When the hydrocarbon gas had nearly been...additional 5 ml of hydrocarbon gas was added. Oxygen...second 5-ml aliquot of hydrocarbon had been consumed...splitless injector, a GC combustion III interface, and...at 37C, followed by heat inactivation for 20...

Molly C. Redmond; David L. Valentine; Alex L. Sessions

2010-07-30T23:59:59.000Z

25

Combustion of viscous hydrocarbons  

SciTech Connect (OSTI)

A method is described for utilizing viscous hydrocarbons as combustible pre-atomized fuels, comprising: (A) forming a hydrocarbon-in-water emulsion using an effective amount of a surfactant package comprising at least one water-soluble surfactant, the hydrocarbon-in-water emulsion (1) comprising a hydrocarbon characterized by API gravity of about 20/sup 0/ API or less, viscosity of about 1000 centipoise or greater at 212/sup 0/F., a paraffin content of about 50% by weight or less and, an aromatic content of about 15% by weight or greater, and (2) having a hydrocarbon water ratio from about 60:40 to about 90:10 by volume; and (B) burning the resultant hydrocarbon-in-water emulsion.

Hayes, M.E.; Hrebenar, K.R.; Murphy, P.L.; Futch, L.E. Jr.; Deal, J.F. III; Bolden, P.L. Jr.

1987-08-04T23:59:59.000Z

26

Nucleosome positioning by genomic excluding-energy barriers  

Science Journals Connector (OSTI)

...genomic excluding-energy barriers 10.1073...Vaillant Benjamin Audit Zofia Haftek-Terreau...Sequence motifs and free energies of selected natural and non-natural...174 . 14 Vaillant C Audit B Arneodo A ( 2007...excluding genomic energy barriers Pascale Milani...Vaillant, Benjamin Audit, Zofia Haftek-Terreau...

Pascale Milani; Guillaume Chevereau; Cdric Vaillant; Benjamin Audit; Zofia Haftek-Terreau; Monique Marilley; Philippe Bouvet; Franoise Argoul; Alain Arneodo

2009-01-01T23:59:59.000Z

27

Hydrocarbon Potential of Deep Water  

Science Journals Connector (OSTI)

...research-article Hydrocarbon Potential of Deep Water H. R. Warman In...the geology and hydrocarbon potential of the Earth's deeper water areas, an attempt...United Kingdom 1981 Hydrocarbon potential of deep water Warman H. R. Author...

1978-01-01T23:59:59.000Z

28

Recovering hydrocarbons from hydrocarbon-containing vapors  

DOE Patents [OSTI]

Values are recovered from a hydrocarbon-containing vapor by contacting the vapor with quench liquid consisting essentially of hydrocarbons to form a condensate and a vapor residue, the condensate and quench fluid forming a combined liquid stream. The combined liquid stream is mixed with a viscosity-lowering liquid to form a mixed liquid having a viscosity lower than the viscosity of the combined liquid stream to permit easy handling of the combined liquid stream. The quench liquid is a cooled portion of the mixed liquid. Viscosity-lowering liquid is separated from a portion of the mixed liquid and cycled to form additional mixed liquid.

Mirza, Zia I. (La Verne, CA); Knell, Everett W. (Los Alamitos, CA); Winter, Bruce L. (Danville, CA)

1980-09-30T23:59:59.000Z

29

A study of the structure of the hydrocarbons of primary hard-coal tar  

SciTech Connect (OSTI)

The hydrocarbons isolated from primary hard-coal (G/sub 6/ gas coal) tar have been investigated by a combination of physicochemical and chemical methods. It has been established that the hydrocarbons boiling up to 573 K are mainly aliphatic, hydroaromatic, and naphthenic and are aromatic only to a smaller degree. Molecular and presumable structural formulas of the oxygen compounds isolated from the 473-573 K hydrocarbon fraction have been derived.

Platonov, V.V.; Gerasimova, N.I.; Ivleva, L.N.; Klyavina, O.A.; Vishnyakov, S.N.

1985-01-01T23:59:59.000Z

30

Plasma Processing Of Hydrocarbon  

SciTech Connect (OSTI)

The Idaho National Laboratory (INL) developed several patented plasma technologies for hydrocarbon processing. The INL patents include nonthermal and thermal plasma technologies for direct natural gas to liquid conversion, upgrading low value heavy oil to synthetic light crude, and to convert refinery bottom heavy streams directly to transportation fuel products. Proof of concepts has been demonstrated with bench scale plasma processes and systems to convert heavy and light hydrocarbons to higher market value products. This paper provides an overview of three selected INL patented plasma technologies for hydrocarbon conversion or upgrade.

Grandy, Jon D; Peter C. Kong; Brent A. Detering; Larry D. Zuck

2007-05-01T23:59:59.000Z

31

Process for light-driven hydrocarbon oxidation at ambient temperatures  

DOE Patents [OSTI]

A photochemical reaction for the oxidation of hydrocarbons uses molecular oxygen as the oxidant. A reductive photoredox cycle that uses a tin(IV)- or antimony(V)-porphyrin photosensitizer generates the reducing equivalents required to activate oxygen. This artificial photosynthesis system drives a catalytic cycle, which mimics the cytochrome P.sub.450 reaction, to oxidize hydrocarbons. An iron(III)- or manganese(III)-porphyrin is used as the hydrocarbon-oxidation catalyst. Methylviologen can be used as a redox relay molecule to provide for electron-transfer from the reduced photosensitizer to the Fe or Mn porphyrin. The system is long-lived and may be used in photo-initiated spectroscopic studies of the reaction to determine reaction rates and intermediates.

Shelnutt, John A. (Tijeras, NM)

1990-01-01T23:59:59.000Z

32

Theoretical studies of hydrocarbon combustion chemistry. Annual progress report  

SciTech Connect (OSTI)

The author reports here the results of DZP CISD calculations for methylcarbene. Geometry, symmetry, and vibrational modes for the radical are reported for both the singlet and the triplet state. Future work will focus on the ethyl radical-oxygen interaction relevant to hydrocarbon combustion.

Schaefer, H.F. III

1994-08-01T23:59:59.000Z

33

Thermodynamical Consistency of Excluded Volume Hadron Gas Models  

E-Print Network [OSTI]

The new excluded volume hadron gas model by Singh et al. [1-7] is critically discussed. We demonstrate that in this model the results obtained from relations between thermodynamical quantities disagree with the corresponding results obtained by statistical ensemble averaging. Thus, the model does not satisfy the requirements of thermodynamical consistency.

M. I. Gorenstein

2012-05-08T23:59:59.000Z

34

Dispersant solutions for dispersing hydrocarbons  

DOE Patents [OSTI]

A dispersant solution includes a hydrocarbon dispersing solution derived from a bacterium from ATCC 75527, ATCC 75529, or ATCC 55638.

Tyndall, R.L.

1997-03-11T23:59:59.000Z

35

Carbon neutral hydrocarbons  

Science Journals Connector (OSTI)

...depends on a source of primary energy to drive the required chemical...synthetic hydrocarbons are an energy carrier produced from a primary energy source such as wind, nuclear...Gustavsson et al. 2007), using a conversion value of $1.00=0.72...

2008-01-01T23:59:59.000Z

36

Optrode for sensing hydrocarbons  

DOE Patents [OSTI]

A two-phase system employing the Fujiwara reaction is provided for the fluorometric detection of halogenated hydrocarbons. A fiber optic is utilized to illuminate a column of pyridine trapped in a capillary tube coaxially attached at one end to the illuminating end of the fiber optic. A strongly alkaline condition necessary for the reaction is maintained by providing a reservoir of alkali in contact with the column of pyridine, the surface of contact being adjacent to the illuminating end of the fiber optic. A semipermeable membrane caps the other end of the capillary tube, the membrane being preferentially permeable to the halogenated hydrocarbon and but preferentially impermeable to water and pyridine. As the halogenated hydrocarbon diffuses through the membrane and into the column of pyridine, fluorescent reaction products are formed. Light propagated by the fiber optic from a light source, excites the fluorescent products. Light from the fluorescence emission is also collected by the same fiber optic and transmitted to a detector. The intensity of the fluorescence gives a measure of the concentration of the halogenated hydrocarbons.

Miller, Holly (Bethel Island, CA); Milanovich, Fred P. (Lafayette, CA); Hirschfeld, Tomas B. (Livermore, CA); Miller, Fred S. (Bethel Island, CA)

1987-01-01T23:59:59.000Z

37

Optrode for sensing hydrocarbons  

DOE Patents [OSTI]

A two-phase system employing the Fujiwara reaction is provided for the fluorometric detection of halogenated hydrocarbons. A fiber optic is utilized to illuminate a column of pyridine trapped in a capillary tube coaxially attached at one end to the illuminating end of the fiber optic. A strongly alkaline condition necessary for the reaction is maintained by providing a reservoir of alkali in contact with the column of pyridine, the surface of contact being adjacent to the illuminating end of the fiber optic. A semipermeable membrane caps the other end of the capillary tube, the membrane being preferentially permeable to the halogenated hydrocarbon and but preferentially impermeable to water and pyridine. As the halogenated hydrocarbon diffuses through the membrane and into the column of pyridine, fluorescent reaction products are formed. Light propagated by the fiber optic from a light source, excites the fluorescent products. Light from the fluorescence emission is also collected by the same fiber optic and transmitted to a detector. The intensity of the fluorescence gives a measure of the concentration of the halogenated hydrocarbons. 5 figs.

Miller, H.; Milanovich, F.P.; Hirschfeld, T.B.; Miller, F.S.

1988-09-13T23:59:59.000Z

38

Optrode for sensing hydrocarbons  

DOE Patents [OSTI]

A two-phase system employing the Fujiwara reaction is provided for the fluorometric detection of halogenated hydrocarbons. A fiber optic is utilized to illuminate a column of pyridine trapped in a capillary tube coaxially attached at one end to the illuminating end of the fiber optic. A strongly alkaline condition necessary for the reaction is maintained by providing a reservoir of alkali in contact with the column of pyridine, the surface of contact being adjacent to the illuminating end of the fiber optic. A semipermeable membrane caps the other end of the capillary tube, the membrane being preferentially permeable to the halogenated hydrocarbon but preferentially impermeable to water and pyridine. As the halogenated hydrocarbon diffuses through the membrane and into the column of pyridine, fluorescent reaction products are formed. Light propagated by the fiber optic from a light source, excites the fluorescent products. Light from the fluorescence emission is also collected by the same fiber optic and transmitted to a detector. The intensity of the fluorescence gives a measure of the concentration of the halogenated hydrocarbons. 6 figs.

Miller, H.; Milanovich, F.P.; Hirschfeld, T.B.; Miller, F.S.

1987-05-19T23:59:59.000Z

39

Optrode for sensing hydrocarbons  

DOE Patents [OSTI]

A two-phase system employing the Fujiwara reaction is provided for the fluorometric detection of halogenated hydrocarbons. A fiber optic is utilized to illuminate a column of pyridine trapped in a capillary tube coaxially attached at one end to the illuminating end of the fiber optic. A strongly alkaline condition necessary for the reaction is maintained by providing a reservoir of alkali in contact with the column of pyridine, the surface of contact being adjacent to the illuminating end of the fiber optic. A semipermeable membrane caps the other end of the capillary tube, the membrane being preferentially permeable to the halogenated hydrocarbon and but preferentially impermeable to water and pyridine. As the halogenated hydrocarbon diffuses through the membrane and into the column of pyridine, fluorescent reaction products are formed. Light propagated by the fiber optic from a light source, excites the fluorescent products. Light from the fluorescence emission is also collected by the same fiber optic and transmitted to a detector. The intensity of the fluorescence gives a measure of the concentration of the halogenated hydrocarbons.

Miller, Holly (Bethel Island, CA); Milanovich, Fred P. (Lafayette, CA); Hirschfeld, Tomas B. (Livermore, CA); Miller, Fred S. (Bethel Island, CA)

1988-01-01T23:59:59.000Z

40

2007-01-0472 Particulate and Hydrocarbon Emissions from a Spray Guided  

E-Print Network [OSTI]

International ABSTRACT The blending of oxygenated compounds with gasoline is projected to increase because in substitution of the aromatic fraction in gasoline. Blending oxygenates with gasoline changes the fuels-out emissions. In this work, the effect of blending methanol and ethanol with gasoline on unburned hydrocarbon

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

National Environmental Policy Act (NEPA) Categorically Excluded Actions |  

Broader source: Energy.gov (indexed) [DOE]

NEPA » National NEPA » National Environmental Policy Act (NEPA) Categorically Excluded Actions National Environmental Policy Act (NEPA) Categorically Excluded Actions Categorical Exclusions (CX) - Categorical exclusions are categories of actions that DOE has determined, by regulation, do not individually or cumulatively have a significant effect on the human environment and for which neither an environmental assessment nor an environmental impact statement is typically required. Title 10 Code of Federal Regulations Part 1021, National Environmental Policy Act Implementing Procedures, Appendices A and B to Subpart D, list DOE's categorical exclusions. Appendix A classes of actions are those actions considered to be general agency actions, such as awarding a contract or hiring personnel. Appendix B classes of actions

42

The Solubility of Oxygen and Ozone in Liquids  

Science Journals Connector (OSTI)

This review covers the solubility of oxygen and ozone in liquids as a function of temperature and pressure. Solubility data for individual systems were critically evaluated and recommended or tentative values presented in many cases. The trend of solubilities in homologous series or related solvents is discussed. Liquids include water;seawater; aqueous salt solutions; mixed solvents; hydrocarbons; organic compounds containing oxygen halogen sulfur nitrogen or silicon; olive oil; and human blood. For ozone only its solubility in water is presented. Key words: aqueous solutions; biological fluids; gas solubility; hydrocarbons; mixed solvents; organic solvents; oxygen; ozone;seawater;water.

Rubin Battino; Timothy R. Rettich; Toshihiro Tominaga

1983-01-01T23:59:59.000Z

43

THERMOCHEMISTRY OF HYDROCARBON RADICALS  

SciTech Connect (OSTI)

Gas phase negative ion chemistry methods are employed to determine enthalpies of formation of hydrocarbon radicals that are important in combustion processes and to investigate the dynamics of ion-molecule reactions. Using guided ion beam tandem mass spectrometry, we measure collisional threshold energies of endoergic proton transfer and hydrogen atom transfer reactions of hydrocarbon molecules with negative reagent ions. The measured reaction threshold energies for proton transfer yield the relative gas phase acidities. In an alternative methodology, competitive collision-induced dissociation of proton-bound ion-molecule complexes provides accurate gas phase acidities relative to a reference acid. Combined with the electron affinity of the R {center_dot} radical, the gas phase acidity yields the RH bond dissociation energy of the corresponding neutral molecule, or equivalently the enthalpy of formation of the R{center_dot} organic radical, using equation: D(R-H) = {Delta}{sub acid}H(RH) + EA(R) - IE(H). The threshold energy for hydrogen abstraction from a hydrocarbon molecule yields its hydrogen atom affinity relative to the reagent anion, providing the RH bond dissociation energy directly. Electronic structure calculations are used to evaluate the possibility of potential energy barriers or dynamical constrictions along the reaction path, and as input for RRKM and phase space theory calculations. In newer experiments, we have measured the product velocity distributions to obtain additional information on the energetics and dynamics of the reactions.

Kent M. Ervin, Principal Investigator

2004-08-17T23:59:59.000Z

44

Radical scavengers from heavy hydrocarbons  

SciTech Connect (OSTI)

The hydrogen-donating properties of some hydrocarbons form the basis for processes such as coal liquefaction and heavy oil upgrading. However, these hydrocarbons have seldom been used for other purposes, because their potential applications have not been well recognized. Research has indicated that these hydrogen-donating hydrocarbons can be used in important reactions as radical scavengers and have properties particular to those of pure hydrocarbons without functional groups containing heteroatoms. Over years of study researchers have found that pure hydrocarbons with radical-scavenging effects nearly as high as those in conventional hindered phenolic antioxidants can be produced from petroleum, and these hydrogen-donating hydrocarbons exhibit such effects even in oxidative atmospheres (i.e., they function as antioxidants). He has also shown that these mixtures have some properties particular to pure hydrocarbons without functional groups containing heteroatoms, and they`ve seen that a mechanism based on the steric effects appears when these hydrocarbons are used in heavy oil hydroprocessing. Hydrogen-donating hydrocarbons should be a viable resource in many applications. In this article, he presents radical-scavenging abilities, characteristics as pure hydrocarbons, and applications on the basis of the studies.

Kubo, Junichi [Nippon Oil Co. Ltd. (Japan)

1996-10-01T23:59:59.000Z

45

Catalysts for conversion of methane to higher hydrocarbons  

DOE Patents [OSTI]

Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700.degree. to 900.degree. C. are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025-0.4 mole and about 0.1-0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800.degree. to 850.degree. C. with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C.sub.2 hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.

Siriwardane, Ranjani V. (Morgantown, WV)

1993-01-01T23:59:59.000Z

46

"ENDING STOCKS OF CRUDE OIL (excluding SPR)"  

U.S. Energy Information Administration (EIA) Indexed Site

ENDING STOCKS OF CRUDE OIL (excluding SPR)" ENDING STOCKS OF CRUDE OIL (excluding SPR)" "Sourcekey","WCESTP11","WCESTP11","WCESTP21","WCESTP21","WCESTP31","WCESTP31","WCESTP41","WCESTP41","WCESTP51","WCESTP51","WCESTUS1","WCESTUS1" "Date","Weekly East Coast (PADD 1) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly East Coast (PADD 1) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Midwest (PADD 2) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Midwest (PADD 2) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Gulf Coast (PADD 3) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Gulf Coast (PADD 3) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Rocky Mountain (PADD 4) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly Rocky Mountain (PADD 4) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly West Coast (PADD 5) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly West Coast (PADD 5) Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly U.S. Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)","Weekly U.S. Ending Stocks excluding SPR of Crude Oil (Thousand Barrels)"

47

The Utilization of Certain Hydrocarbons by Microorganisms  

Science Journals Connector (OSTI)

...UTILIZATION OF CERTAIN HYDROCARBONS BY MICROORGANISMS...1940 INTRODUCTION Hydrocarbons, as a class, represent...obtained by comparing the heat of combustion of some six carbon...biological utilization of hydrocarbons as sources of energy...

L. D. Bushnell; H. F. Haas

1941-05-01T23:59:59.000Z

48

Interaction between Carcinogenic Hydrocarbons and Nucleosides  

Science Journals Connector (OSTI)

...addition, the findings that hydrocarbons inhibit DNA syn thesis...for these carcinogens. Hydrocarbon-nucleic acid interaction...and the interactions of water molecules. Indeed, carcinogenic hydrocarbons tend to form 1 This investigation...

Ronald G. Harvey and Marilyn Halonen

1968-11-01T23:59:59.000Z

49

Enhanced liquid hydrocarbon recovery process  

SciTech Connect (OSTI)

This patent describes a process for recovering liquid hydrocarbons. It comprises: injecting into a fractured subterranean formation a polymer enhanced foam comprising a polymer selected from a synthetic polymer or a biopolymer, a surfactant, an aqueous solvent and a gas, recovering liquid hydrocarbons from the formation.

Sydansk, R.D.

1992-07-14T23:59:59.000Z

50

Hydrocarbon sensors and materials therefor  

DOE Patents [OSTI]

An electrochemical hydrocarbon sensor and materials for use in sensors. A suitable proton conducting electrolyte and catalytic materials have been found for specific application in the detection and measurement of non-methane hydrocarbons. The sensor comprises a proton conducting electrolyte sandwiched between two electrodes. At least one of the electrodes is covered with a hydrocarbon decomposition catalyst. Two different modes of operation for the hydrocarbon sensors can be used: equilibrium versus non-equilibrium measurements and differential catalytic. The sensor has particular application for on-board monitoring of automobile exhaust gases to evaluate the performance of catalytic converters. In addition, the sensor can be utilized in monitoring any process where hydrocarbons are exhausted, for instance, industrial power plants. The sensor is low cost, rugged, sensitive, simple to fabricate, miniature, and does not suffer cross sensitivities.

Pham, Ai Quoc (San Jose, CA); Glass, Robert S. (Livermore, CA)

2000-01-01T23:59:59.000Z

51

Low oxygen biomass-derived pyrolysis oils and methods for producing the same  

DOE Patents [OSTI]

Low oxygen biomass-derived pyrolysis oils and methods for producing them from carbonaceous biomass feedstock are provided. The carbonaceous biomass feedstock is pyrolyzed in the presence of a catalyst comprising base metal-based catalysts, noble metal-based catalysts, treated zeolitic catalysts, or combinations thereof to produce pyrolysis gases. During pyrolysis, the catalyst catalyzes a deoxygenation reaction whereby at least a portion of the oxygenated hydrocarbons in the pyrolysis gases are converted into hydrocarbons. The oxygen is removed as carbon oxides and water. A condensable portion (the vapors) of the pyrolysis gases is condensed to low oxygen biomass-derived pyrolysis oil.

Marinangeli, Richard; Brandvold, Timothy A; Kocal, Joseph A

2013-08-27T23:59:59.000Z

52

Hydrocarbon steam reforming using series steam superheaters  

SciTech Connect (OSTI)

In a process for steam reforming of a hydrocarbon gas feedstream wherein: the hydrocarbon gas feedstream is partially reformed at elevated temperatures in indirect heat exchange with hot combustion gases in a direct fired primary reforming furnace provided with a convection section for recovery of excess heat from said combustion gases; and the partially reformed feedstream is then further reformed in the presence of an oxygen-containing gas and steam in a secondary reformer to form a secondary reformer gaseous effluent; the improvement which comprises recovering waste heat from said secondary reformer effluent gas and from said primary reforming combustion products by heating a high pressure saturated steam in a first steam superheating zone by indirect heat exchange with at least a portion of said secondary reformer effluent gas to form a first superheated steam stream; and further heating said first superheated steam in a second steam superheating zone by indirect heat exchange with at least a portion of said primary reformer hot combustion gases for form a second superheated steam stream.

Osman, R. M.

1985-10-08T23:59:59.000Z

53

Process for recovering hydrocarbons from a hydrocarbon-bearing formation  

SciTech Connect (OSTI)

A method is described for transporting heavy crude oil through a pipeline which involves introducing into a pipeline or well-bore with the viscous hydrocarbons an aqueous solution containing (1) a sulfonate surfactant, (2) a rosin soap or a naphthenic acid soap and, optionally (3) coupling agent whereby there is spontaneously formed a low viscosity, salt tolerant, oil-in-water emulsion. Also disclosed is a method of recovery of hydrocarbons from a hydrocarbon bearing formation employing an aqueous solution containing (1) a sulfonate surfactant, (2) a rosin soap or a naphthenic acid soap and, optionally (3) a coupling agent.

Alston, R.B.; Braden, W.B.; Flournoy, K.H.

1980-03-11T23:59:59.000Z

54

Chemical Kinetics of Hydrocarbon Ignition in Practical Combustion Systems  

SciTech Connect (OSTI)

Chemical kinetic factors of hydrocarbon oxidation are examined in a variety of ignition problems. Ignition is related to the presence of a dominant chain branching reaction mechanism that can drive a chemical system to completion in a very short period of time. Ignition in laboratory environments is studied for problems including shock tubes and rapid compression machines. Modeling of the laboratory systems are used to develop kinetic models that can be used to analyze ignition in practical systems. Two major chain branching regimes are identified, one consisting of high temperature ignition with a chain branching reaction mechanism based on the reaction between atomic hydrogen with molecular oxygen, and the second based on an intermediate temperature thermal decomposition of hydrogen peroxide. Kinetic models are then used to describe ignition in practical combustion environments, including detonations and pulse combustors for high temperature ignition, and engine knock and diesel ignition for intermediate temperature ignition. The final example of ignition in a practical environment is homogeneous charge, compression ignition (HCCI) which is shown to be a problem dominated by the kinetics intermediate temperature hydrocarbon ignition. Model results show why high hydrocarbon and CO emissions are inevitable in HCCI combustion. The conclusion of this study is that the kinetics of hydrocarbon ignition are actually quite simple, since only one or two elementary reactions are dominant. However, there are many combustion factors that can influence these two major reactions, and these are the features that vary from one practical system to another.

Westbrook, C.K.

2000-07-07T23:59:59.000Z

55

A new technology for producing synthetic liquid hydrocarbons from gaseous hydrocarbons  

Science Journals Connector (OSTI)

Conventional technologies of synthetic liquid fuels (SLF) production from gaseous hydrocarbons by producing synthesis ... liquid hydrocarbons are examined. A high-efficiency SLF production technology that allows ...

D. L. Astanovskii; L. Z. Astanovskii; A. L. Lapidus

2012-09-01T23:59:59.000Z

56

E-Print Network 3.0 - advanced cancer excluding Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: advanced cancer excluding Page: << < 1 2 3 4 5 > >> 1 Eur J Cancer. Author manuscript Social...

57

Enrichment of light hydrocarbon mixture  

DOE Patents [OSTI]

Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process.

Yang, Dali (Los Alamos, NM); Devlin, David (Santa Fe, NM); Barbero, Robert S. (Santa Cruz, NM); Carrera, Martin E. (Naperville, IL); Colling, Craig W. (Warrenville, IL)

2011-11-29T23:59:59.000Z

58

Biological enhancement of hydrocarbon extraction  

DOE Patents [OSTI]

A method of microbial enhanced oil recovery for recovering oil from an oil-bearing rock formation is provided. The methodology uses a consortium of bacteria including a mixture of surfactant producing bacteria and non-surfactant enzyme producing bacteria which may release hydrocarbons from bitumen containing sands. The described bioprocess can work with existing petroleum recovery protocols. The consortium microorganisms are also useful for treatment of above oil sands, ground waste tailings, subsurface oil recovery, and similar materials to enhance remediation and/or recovery of additional hydrocarbons from the materials.

Brigmon, Robin L. (North Augusta, SC); Berry, Christopher J. (Aiken, SC)

2009-01-06T23:59:59.000Z

59

Fluorescence Detection of Hydrocarbons in Harbour Water  

Science Journals Connector (OSTI)

In harbor water, the hydrocarbons pollution identification represents an important issue. Hydrocarbon presence derives from oil spills, for instance in bilge water, or it may come from industrial discharge ... Fl...

A. Catini; F. Dini; D. Polese; S. Petrocco; M. De Luca

2011-01-01T23:59:59.000Z

60

Method And Apparatus For Converting Hydrocarbon Fuel Into Hydrogen Gas And Carbon Dioxide  

DOE Patents [OSTI]

A hydrocarbon fuel reforming method is disclosed suitable for producing synthesis hydrogen gas from reactions with hydrocarbons fuels, oxygen, and steam. A first mixture of an oxygen-containing gas and a first fuel is directed into a first tube 108 to produce a first reaction reformate. A second mixture of steam and a second fuel is directed into a second tube 116 annularly disposed about the first tube 108 to produce a second reaction reformate. The first and second reaction reformates are then directed into a reforming zone 144 and subject to a catalytic reforming reaction. In another aspect of the method, a first fuel is combusted with an oxygen-containing gas in a first zone 108 to produce a reformate stream, while a second fuel under steam reforming in a second zone 116. Heat energy from the first zone 108 is transferred to the second zone 116.

Clawson, Lawrence G. (Dover, MA); Mitchell, William L. (Belmont, MA); Bentley, Jeffrey M. (Westford, MA); Thijssen, Johannes H. J. (Cambridge, MA)

2001-03-27T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon Degradation. Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon Degradation. Abstract: Many...

62

Extracting hydrocarbons from water using a centrifuge  

Science Journals Connector (OSTI)

An original method for the solid-phase microextraction of hydrocarbons from water using a centrifuge is proposed. Comparative results...

A. Yu. Ryabov; A. A. Ilyina; A. V. Chuikin

2014-09-01T23:59:59.000Z

63

Photo-oxides of Carcinogenic Hydrocarbons  

Science Journals Connector (OSTI)

... are involved in the biological action of carcinogenic hydrocarbons, we have attempted to isolate the photo-oxides of some of these hydrocarbons. Such ... -oxides of some of these hydrocarbons. Such photo-oxides would naturally be insoluble in water and hence would represent merely one stage in ...

J. W. COOK; R. MARTIN; E. M. F. ROE

1939-06-17T23:59:59.000Z

64

Method of preparing and utilizing a catalyst system for an oxidation process on a gaseous hydrocarbon stream  

DOE Patents [OSTI]

The disclosure relates to a method of utilizing a catalyst system for an oxidation process on a gaseous hydrocarbon stream with a mitigation of carbon accumulation. The system is comprised of a catalytically active phase deposited onto an oxygen conducting phase, with or without supplemental support. The catalytically active phase has a specified crystal structure where at least one catalytically active metal is a cation within the crystal structure and coordinated with oxygen atoms within the crystal structure. The catalyst system employs an optimum coverage ratio for a given set of oxidation conditions, based on a specified hydrocarbon conversion and a carbon deposition limit. Specific embodiments of the catalyst system are disclosed.

Berry, David A; Shekhawat, Dushyant; Smith, Mark; Haynes, Daniel

2013-07-16T23:59:59.000Z

65

Catalytic steam reforming of hydrocarbons  

SciTech Connect (OSTI)

The hot effluent from the catalytic steam reforming of a major portion of a fluid hydrocarbon feed stream in the reformer tubes of a primary reformer, or said effluent after secondary reforming thereof, is mixed with the hot effluent from the catalytic steam reforming of the remaining portion of the feed discharged from the reformer tubes of a primary reformer-exchanger. The combined gas steam is passed on the shell side of the reformer-exchanger countercurrently to the passage of feed in the reformer tubes thereof, thus supplying the heat for the reforming of the portion of the feed passed through the reformer tubes of the reformerexchanger. At least about 2/3 of the hydrocarbon feed stream is passed to the reformer tubes of said primary reformer, heated by radiant heat transfer and/or by contact with combustion gases, at a steam/hydrocarbon mole ratio of about 2-4/1. The remainder of said feed stream is passed to the reformer tubes of said reformer -exchanger at a steam/hydrocarbon mole ratio of about 3-6/1. The reformer shell of the reformer-exchanger is internally insulated by a refractory lining or by use of a double shell with passage of water or a portion of the feed material between the inner and outer shells. There is no significant difference between the pressure inside and outside of the reformer tubes of said primary reformer-exchanger.

Fuderer, A.

1982-06-29T23:59:59.000Z

66

DME-to-oxygenates process studies  

SciTech Connect (OSTI)

The feasibility of the production of hydrocarbons from dimethyl ether (DNM) has been illustrated in a fixed bed micro-reactor as well as a bench scale fluidized bed reactor by the University of Akron/EPRI DME-to-Hydrocarbon (DTG) Process. The DTG process has distinct advantages over its methanol based counterpart. Specifically, the DTG process excels in the area of higher productivity, higher per-pass conversion, and lower heat duties than the MTG process. Also of special importance is the production of oxygenates -- including MTBE, ETBE, and TAME. DME may be reacted with isobutylene to produce a mixture of MTBE and ETBE. The properties of ETBE excel over MTBE in the areas of lower RVP and higher RON. According to industrial reports, MTBE is the fastest growing chemical (1992 US capacity 135,350 BPD, with expected growth of 34%/year to 1997). Also, recent renewed interest as an octane-enhancer and as a source of oxygen has spurred a growing interest in nonrefinery synthesis routes to ETBE. TAME, with its lower RVP and higher RON has proven useful as a gasoline blending agent and octane enhancer and may also be produced directly from DME. DME, therefore, serves as a valuable feedstock in the conversion of may oxygenates with wide-scale industrial importance. It should be also noted that the interest in the utilization of DME as process feedstock is based on the favorable process economics of EPRI/UA`s liquid phase DME process.

Tartamella, T.L.; Sardesai, A.; Lee, S. [Univ. of Akron, OH (United States); Kulik, C.J. [Electric Power Research Inst., Palo Alto, CA (United States)

1994-12-31T23:59:59.000Z

67

Syngas Upgrading to Hydrocarbon Fuels Technology Pathway  

Broader source: Energy.gov [DOE]

This technology pathway case investigates the upgrading of woody biomass derived synthesis gas (syngas) to hydrocarbon biofuels. While this specific discussion focuses on the conversion of syngas via a methanol intermediate to hydrocarbon blendstocks, there are a number of alternative conversion routes for production of hydrocarbons through a wide array of intermediates from syngas. Future work will also consider the variations to this pathway to determine the most economically viable and lowest risk conversion route. Technical barriers and key research needs have been identified that should be pursued for the syngas-to-hydrocarbon pathway to be competitive with petroleum-derived gasoline-, diesel- and jet-range hydrocarbon blendstocks.

68

Hydrochemistry and Composition of Hydrocarbons in the Waters of Peatlands in Western Siberia  

Science Journals Connector (OSTI)

Abstract The paper describes the geochemistry of swamp waters and the content of dissolved organic matter. It is shown that swamp waters are noted for exceptionally low TDS, low pH value, high content of organic matter and NH4, increased content of Fe and Si. In swamp waters the content of organic substances exceeds that of mineral substances. The composition of organic matter is characterized by pronounced predominance of humic matter. Swamp waters are characterized by the presence of hydrocarbon and oxygen-containing organic matter with a predominance of hydrocarbons, which are the main group of n-alkanes.

O. Naymushina; S. Shvartsev; K. Ses

2014-01-01T23:59:59.000Z

69

Artificial oxygen transport protein  

DOE Patents [OSTI]

This invention provides heme-containing peptides capable of binding molecular oxygen at room temperature. These compounds may be useful in the absorption of molecular oxygen from molecular oxygen-containing atmospheres. Also included in the invention are methods for treating an oxygen transport deficiency in a mammal.

Dutton, P. Leslie

2014-09-30T23:59:59.000Z

70

Hydrocarbon Technologies | Open Energy Information  

Open Energy Info (EERE)

Hydrocarbon Technologies Hydrocarbon Technologies Place Lawrenceville, New Jersey Zip 8648 Sector Efficiency Product String representation "Technology-base ... onmental risks." is too long. Coordinates 36.761678°, -77.845048° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.761678,"lon":-77.845048,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

71

Enhanced liquid hydrocarbon recovery process  

SciTech Connect (OSTI)

This patent describes a process for the recovery of liquid hydrocarbons from a subterranean hydrocarbon-bearing formation. It comprises injecting natural gas into the formation via a well in fluid communication with the formation, the natural gas being at a temperature which is insufficient to significantly mobilize light density oil in the formation and at a pressure such that the natural gas is immiscible with the light density oil in the formation, the natural gas being injected in a volume sufficient to contact light density oil in the formation within a radius from the well of about 50 meters; shutting in the well for a period of time of about 1 to about 100 days which is sufficient to render the contacted light density oil mobile; and producing the light density oil which has been mobilized by solution of the natural gas from the well.

Haines, H.K.; Monger, T.G.; Kenyon, D.E.; Galvin, L.J.

1991-06-25T23:59:59.000Z

72

Dry reforming of hydrocarbon feedstocks  

SciTech Connect (OSTI)

Developments in catalyst technology for the dry reforming of hydrocarbon feedstocks are reviewed for methane, higher hydrocarbons and alcohols. Thermodynamics, mechanisms and the kinetics of dry reforming are also reviewed. The literature on Ni catalysts, bi-metallic Ni catalysts and the role of promoters on Ni catalysts is critically evaluated. The use of noble and transitional metal catalysts for dry reforming is discussed. The application of solid oxide and metal carbide catalysts to dry reforming is also evaluated. Finally, various mechanisms for catalyst deactivation are assessed. This review also examines the various process related issues associated with dry reforming such as its application and heat optimization. Novel approaches such as supercritical dry reforming and microwave assisted dry reforming are briefly expanded upon.

Shah, Yatish T. [Norfolk State University; Gardner, Todd H. [U.S. DOE

2014-01-01T23:59:59.000Z

73

Chapter 3 - Hydrocarbons from Petroleum  

Science Journals Connector (OSTI)

Publisher Summary Petroleum products (in contrast to petrochemicals) are those hydrocarbon fractions that are derived from petroleum and have commercial value as a bulk product. A major group of hydrocarbon products from petroleum (petrochemicals) are the basis of a major industry. They are, in the strictest sense, different to petroleum products insofar as the petrochemicals are the basic building blocks of the chemical industry. The specific gravity of product gases, including liquefied petroleum gas, may be determined conveniently by a number of methods and a variety of instruments. The heat value of gases is generally determined at constant pressure in a flow calorimeter in which the heat released by the combustion of a definite quantity of gas is absorbed by a measured quantity of water or air. A continuous recording calorimeter is available for measuring heat values of natural gases.

James G. Speight

2011-01-01T23:59:59.000Z

74

Discharge produces hydrocarbons from coal  

Science Journals Connector (OSTI)

Discharge produces hydrocarbons from coal ... Studies of the reactions of coal in electric discharges by two chemists at the U.S. Bureau of Mines' Pittsburgh Coal Research Center may lead to improved ways of producing acetylene and other useful chemicals from coal. ... Other workers have produced high yields of acetylene from coal by extremely rapid pyrolysis using energy sources such as plasma jets, laser beams, arc-image reactors, and flash heaters. ...

1968-01-22T23:59:59.000Z

75

Deep desulfurization of hydrocarbon fuels  

DOE Patents [OSTI]

The invention relates to processes for reducing the sulfur content in hydrocarbon fuels such as gasoline, diesel fuel and jet fuel. The invention provides a method and materials for producing ultra low sulfur content transportation fuels for motor vehicles as well as for applications such as fuel cells. The materials and method of the invention may be used at ambient or elevated temperatures and at ambient or elevated pressures without the need for hydrogen.

Song, Chunshan (State College, PA); Ma, Xiaoliang (State College, PA); Sprague, Michael J. (Calgary, CA); Subramani, Velu (State College, PA)

2012-04-17T23:59:59.000Z

76

Volatile liquid hydrocarbon characterization of underwater hydrocarbon vents and formation waters from offshore production operations  

Science Journals Connector (OSTI)

Volatile liquid hydrocarbon characterization of underwater hydrocarbon vents and formation waters from offshore production operations ... The environmental implications of offshore oil and gas activities ... The environmental implications of offshore oil and gas activities ...

Theodor C. Sauer

1981-08-01T23:59:59.000Z

77

Correlation between speciated hydrocarbon emissions and flame ionization detector response for gasoline/alcohol blends .  

SciTech Connect (OSTI)

The U.S. renewable fuel standard has made it a requirement to increase the production of ethanol and advanced biofuels to 36 billion by 2022. Ethanol will be capped at 15 billion, which leaves 21 billion to come from other sources such as butanol. Butanol has a higher energy density and lower affinity for water than ethanol. Moreover, alcohol fueled engines in general have been shown to positively affect engine-out emissions of oxides of nitrogen and carbon monoxide compared with their gasoline fueled counterparts. In light of these developments, the variety and blend levels of oxygenated constituents is likely to increase in the foreseeable future. The effect on engine-out emissions for total hydrocarbons is less clear due to the relative insensitivity of the flame ionization detector (FID) toward alcohols and aldehydes. It is well documented that hydrocarbon (HC) measurement using a conventional FID in the presence of oxygenates in the engine exhaust stream can lead to a misinterpretation of HC emissions trends for alcohol fuel blends. Characterization of the exhaust stream for all expected hydrocarbon constituents is required to accurately determine the actual concentration of unburned fuel components in the exhaust. In addition to a conventional exhaust emissions bench, this characterization requires supplementary instrumentation capable of hydrocarbon speciation and response factor independent quantification. Although required for certification testing, this sort of instrumentation is not yet widely available in engine development facilities. Therefore, an attempt is made to empirically determine FID correction factors for oxygenate fuels. Exhaust emissions of an engine fueled with several blends of gasoline and ethanol, n-butanol and iso-Butanol were characterized using both a conventional FID and a Fourier transform infrared. Based on these results, a response factor predicting the actual hydrocarbon emissions based solely on FID results as a function of alcohol type and content is presented. Finally, the correlation derived from data presented in this study is compared with equations and results found in the literature.

Wallner, T. (Energy Systems)

2011-08-01T23:59:59.000Z

78

HYDROCARBON AND SULFUR SENSORS FOR SOFC SYSTEMS  

SciTech Connect (OSTI)

The following report summarizes work conducted during the Phase I program Hydrocarbon and Sulfur Sensors for SOFC Systems under contract No. DE-FC26-02NT41576. For the SOFC application, sensors are required to monitor hydrocarbons and sulfur in order to increase the operation life of SOFC components. This report discusses the development of two such sensors, one based on thick film approach for sulfur monitoring and the second galvanic based for hydrocarbon monitoring.

A.M. Azad; Chris Holt; Todd Lesousky; Scott Swartz

2003-11-01T23:59:59.000Z

79

Hydrocarbon Separations in MetalOrganic Frameworks  

Science Journals Connector (OSTI)

Given the large differences in the physical properties of methane and C2 hydrocarbons, both size selective effects and metalhydrocarbon interactions can be tuned to achieve a high selectivity within a metalorganic framework. ... Polycyclic aromatic hydrocarbons, or PAHs, are carcinogenic byproducts of incomplete combustion of organic matter such as fossil fuels. ... data and the heats of adsorption were found to fit well to a small group of mol. ...

Zoey R. Herm; Eric D. Bloch; Jeffrey R. Long

2013-11-22T23:59:59.000Z

80

Indoor Levels of Polycyclic Aromatic Hydrocarbons in Homes with or without Wood Burning for Heating  

Science Journals Connector (OSTI)

Indoor Levels of Polycyclic Aromatic Hydrocarbons in Homes with or without Wood Burning for Heating ... One wood-burning home had a boiler located in a shelter outside the house and was excluded from the study. ... The concentrations of BaP in the wood-burning homes (0.52 ng/m3) were within the range reported for an American home during operation of different airtight wood stoves (20) and for seven homes during wood burning in airtight wood stoves (21). ...

Pernilla Gustafson; Conny stman; Gerd Sllsten

2008-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Membrane separation of hydrocarbons using cycloparaffinic solvents  

DOE Patents [OSTI]

Heavy crude oils which contain metal contaminants such as nickel, vanadium and iron may be separated from light hydrocarbon oils by passing a solution of the crude oil dissolved in a cycloparaffinic hydrocarbon solvent containing from about 5 to about 8 carbon atoms by passing through a polymeric membrane which is capable of maintaining its integrity in the presence of hydrocarbon compounds. The light hydrocarbon oils which possess relatively low molecular weights will be recovered as the permeate while the heavy oils which possess relatively high molecular weights as well as the metal contaminants will be recovered as the retentate.

Kulkarni, S.S.; Chang, Y.A.; Gatsis, J.G.; Funk, E.W.

1988-06-14T23:59:59.000Z

82

catalytic_upgrading_sugars_to_hydrocarbons  

Broader source: Energy.gov (indexed) [DOE]

phase reforming into hydrocarbons for fuels and co-product commodities. Process Block Diagram Next Steps Additional modeling is necessary to quantify baseline costs associated...

83

Application of advanced hydrocarbon characterization and its...  

Broader source: Energy.gov (indexed) [DOE]

advanced hydrocarbon characterization and its consequences on future fuel properties and advanced combustion research Rafal Gieleciak, Craig Fairbridge and Darcy Hager Poster...

84

Nox reduction system utilizing pulsed hydrocarbon injection  

DOE Patents [OSTI]

Hydrocarbon co-reductants, such as diesel fuel, are added by pulsed injection to internal combustion engine exhaust to reduce exhaust NO.sub.x to N.sub.2 in the presence of a catalyst. Exhaust NO.sub.x reduction of at least 50% in the emissions is achieved with the addition of less than 5% fuel as a source of the hydrocarbon co-reductants. By means of pulsing the hydrocarbon flow, the amount of pulsed hydrocarbon vapor (itself a pollutant) can be minimized relative to the amount of NO.sub.x species removed.

Brusasco, Raymond M. (Livermore, CA); Penetrante, Bernardino M. (San Ramon, CA); Vogtlin, George E. (Fremont, CA); Merritt, Bernard T. (Livermore, CA)

2001-01-01T23:59:59.000Z

85

Hydrodeoxygenation processes: Advances on catalytic transformations of biomass-derived platform chemicals into hydrocarbon fuels  

Science Journals Connector (OSTI)

Abstract Lignocellulosic biomass provides an attractive source of renewable carbon that can be sustainably converted into chemicals and fuels. Hydrodeoxygenation (HDO) processes have recently received considerable attention to upgrade biomass-derived feedstocks into liquid transportation fuels. The selection and design of HDO catalysts plays an important role to determine the success of the process. This review has been aimed to emphasize recent developments on HDO catalysts in effective transformations of biomass-derived platform molecules into hydrocarbon fuels with reduced oxygen content and improved H/C ratios. Liquid hydrocarbon fuels can be obtained by combining oxygen removal processes (e.g. dehydration, hydrogenation, hydrogenolysis, decarbonylation etc.) as well as by increasing the molecular weight via CC coupling reactions (e.g. aldol condensation, ketonization, oligomerization, hydroxyalkylation etc.). Fundamentals and mechanistic aspects of the use of HDO catalysts in deoxygenation reactions will also be discussed.

Sudipta De; Basudeb Saha; Rafael Luque

2014-01-01T23:59:59.000Z

86

Apparatus for converting hydrocarbon fuel into hydrogen gas and carbon dioxide  

DOE Patents [OSTI]

Hydrocarbon fuel reformer 100 suitable for producing synthesis hydrogen gas from reactions with hydrocarbons fuels, oxygen, and steam. A first tube 108 has a first tube inlet 110 and a first tube outlet 112. The first tube inlet 110 is adapted for receiving a first mixture including an oxygen-containing gas and a first fuel. A partially oxidized first reaction reformate is directed out of the first tube 108 into a mixing zone 114. A second tube 116 is annularly disposed about the first tube 108 and has a second tube inlet 118 and a second tube outlet 120. The second tube inlet 118 is adapted for receiving a second mixture including steam and a second fuel. A steam reformed second reaction reformate is directed out of the second tube 116 and into the mixing zone 114. From the mixing zone 114, the first and second reaction reformates may be directed into a catalytic reforming zone 144 containing a reforming catalyst 147.

Clawson, Lawrence G. (7 Rocky Brook Rd., Dover, MA 02030); Mitchell, William L. (111 Oakley Rd., Belmont, MA 02178); Bentley, Jeffrey M. (20 Landmark Rd., Westford, MA 01886); Thijssen, Johannes H. J. (1 Richdale Ave.#2, Cambridge, MA 02140)

2002-01-01T23:59:59.000Z

87

Apparatus for converting hydrocarbon fuel into hydrogen gas and carbon dioxide  

DOE Patents [OSTI]

A hydrocarbon fuel reformer (200) is disclosed suitable for producing synthesis hydrogen gas from reactions with hydrocarbons fuels, oxygen, and steam. The reformer (200) comprises first and second tubes (208,218). The first tube (208) includes a first catalyst (214) and receives a first mixture of steam and a first fuel. The second tube (218) is annularly disposed about the first tube (208) and receives a second mixture of an oxygen-containing gas and a second fuel. In one embodiment, a third tube (224) is annularly disposed about the second tube (218) and receives a first reaction reformate from the first tube (208) and a second reaction reformate from the second tube (218). A catalyst reforming zone (260) annularly disposed about the third tube (224) may be provided to subject reformate constituents to a shift reaction. In another embodiment, a fractionator is provided to distill first and second fuels from a fuel supply source.

Clawson, Lawrence G. (Dover, MA); Mitchell, William L. (Belmont, MA); Bentley, Jeffrey M. (Westford, MA); Thijssen, Johannes H. J. (Cambridge, MA)

2001-01-01T23:59:59.000Z

88

Covalency in Metal-Oxygen Multiple Bonds Evaluated Using Oxygen...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Covalency in Metal-Oxygen Multiple Bonds Evaluated Using Oxygen K-edge Spectroscopy and Electronic Structure Theory . Covalency in Metal-Oxygen Multiple Bonds Evaluated Using...

89

Biodegradation of Aromatic Hydrocarbons in an Extremely Acidic Environment  

Science Journals Connector (OSTI)

...biodegradation of aromatic hydrocarbons can occur in environments...Polycyclic aromatic hydrocarbons (PAHs) occur as common...formed by incomplete combustion of fossil fuels...enrichments with aromatic hydrocarbons, mineralization assays...lysis was initiated by heat and sodium dodecyl...

Raymond D. Stapleton; Dwayne C. Savage; Gary S. Sayler; Gary Stacey

1998-11-01T23:59:59.000Z

90

High Levels of Carcinogenic Polycyclic Aromatic Hydrocarbons in Mate Drinks  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbons| Introduction Esophageal...polycyclic aromatic hydrocarbon (PAH) content. PAHs...usually exposed to combustion products from burning...SRM 2260a Aromatic Hydrocarbons in Toluene, SRM 2269...dichloromethane; heat: preheat cell at 100C...

Farin Kamangar; Michele M. Schantz; Christian C. Abnet; Renato B. Fagundes; and Sanford M. Dawsey

2008-05-01T23:59:59.000Z

91

High Levels of Carcinogenic Polycyclic Aromatic Hydrocarbons in Mate Drinks  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbons (PAH), including...polycyclic aromatic hydrocarbons| Introduction...mechanism. However, data on the association...polycyclic aromatic hydrocarbon (PAH) content...usually exposed to combustion products from burning...dichloromethane; heat: preheat cell...

Farin Kamangar; Michele M. Schantz; Christian C. Abnet; Renato B. Fagundes; and Sanford M. Dawsey

2008-05-01T23:59:59.000Z

92

MICROCHEMICALJOURNAL39, 160-165Hydrocarbons in Air  

E-Print Network [OSTI]

from Waters Associates. Water used was deionized, distilled, and hydrocarbon filtered (BarnsteadMICROCHEMICALJOURNAL39, 160-165Hydrocarbons in Air to extract polycyclic aromatic hydrocarbons (PAH) from air particulate sampleswas investigated. High

Canberra, University of

93

Metabolism of Polycyclic Aromatic Hydrocarbons in Cell Cultures  

Science Journals Connector (OSTI)

...metabolism of polycyclic aromatic hydrocarbons to water-soluble and organic-soluble...metabolism of polycyclic aromatic hydrocarbons to water-soluble and organic-soluble...cytotoxicity and conversion of hydrocarbons to water-soluble products (Chart...

Eliezer Huberman; James K. Selkirk; and Charles Heidelberger

1971-12-01T23:59:59.000Z

94

High Levels of Carcinogenic Polycyclic Aromatic Hydrocarbons in Mate Drinks  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbons (PAH), including...80C) or cold (5C) water. Measurements were...polycyclic aromatic hydrocarbons in mate drinks. | Drinking...polycyclic aromatic hydrocarbons (PAH), including...cold (5 degrees C) water. Measurements were...

Farin Kamangar; Michele M. Schantz; Christian C. Abnet; Renato B. Fagundes; and Sanford M. Dawsey

2008-05-01T23:59:59.000Z

95

Hydrocarbons in rift basins: the role of stratigraphy  

Science Journals Connector (OSTI)

...versus shallow-water environments...A (1999) Hydrocarbons in rift basins...Facies and hydrocarbon potential The...availability of water. This can either...form seals for hydrocarbons. The shallow-water environ- ments...

1999-01-01T23:59:59.000Z

96

Learning and discrimination of cuticular hydrocarbons in a social insect  

Science Journals Connector (OSTI)

...colony members. Cuticular hydrocarbons (CHCs) play a central...CHC profile with synthetic hydrocarbons [4-6] reveal that some hydrocarbons elicit aggression. However...non-volatile, insoluble in water and therefore difficult...

2012-01-01T23:59:59.000Z

97

Particle number fluctuations in nuclear collisions within excluded volume hadron gas model  

E-Print Network [OSTI]

The multiplicity fluctuations are studied in the van der Waals excluded volume hadron-resonance gas model. The calculations are done in the grand canonical ensemble within the Boltzmann statistics approximation. The scaled variances for positive, negative and all charged hadrons are calculated along the chemical freeze-out line of nucleus-nucleus collisions at different collision energies. The multiplicity fluctuations are found to be suppressed in the van der Waals gas. The numerical calculations are presented for two values of hard-core hadron radius, $r=0.3$ fm and 0.5 fm, as well as for the upper limit of the excluded volume suppression effects.

M. I. Gorenstein; M. Hauer; D. O. Nikolajenko

2007-02-26T23:59:59.000Z

98

Tensile Effective Stresses in Hydrocarbon Storage Caverns  

E-Print Network [OSTI]

Tensile Effective Stresses in Hydrocarbon Storage Caverns Hippolyte Djizanne and Pierre Bérest LMS, Germany,1-2 October 2012 TENSILE EFFECTIVE STRESSES IN HYDROCARBON STORAGE CAVERNS Hippolyte Djizanne1 that effective tensile stresses can be generated at a cavern wall after a rapid increase or decrease in pressure

Paris-Sud XI, Université de

99

Conversion of organic solids to hydrocarbons  

DOE Patents [OSTI]

A method of converting organic solids to liquid and gaseous hydrocarbons includes impregnating an organic solid with photosensitizing ions and exposing the impregnated solid to light in a non-oxidizing atmosphere for a time sufficient to photocatalytically reduce the solid to at least one of a liquid and a gaseous hydrocarbon. 5 Figs.

Greenbaum, E.

1995-05-23T23:59:59.000Z

100

The Effects of Two Isomeric Benzoflavones on Aryl Hydrocarbon Hydroxylase and the Toxicity and Carcinogenicity of Polycyclic Hydrocarbons  

Science Journals Connector (OSTI)

...recrystallized from alcohol : water. For tissue culture experiments the hydrocarbons and benzoflavones...metabolism of the hydrocarbons to water-soluble derivatives...chloroform:methanol. Hydrocarbon-3 H metabolized to water-soluble derivatives...

Leila Diamond; Rosemary McFall; Joel Miller; and Harry V. Gelboin

1972-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Chemical looping combustion of biomass-derived syngas using ceria-supported oxygen carriers  

Science Journals Connector (OSTI)

Abstract Cu, Ni and Fe oxides supported on ceria were investigated for their performance as oxygen carriers during the chemical looping combustion of biomass-derived syngas. A complex gas mixture containing CO, H2, CO2, CH4 and other hydrocarbons was used to simulate the complex fuel gas environment derived from biomass gasification. Results show that the transfer of the stored oxygen into oxidants for the supported Cu and Ni oxides at 800C for the combustion of syngas was effective (>85%). The unsupported Cu oxide showed high oxygen carrying capacity but particle sintering was observed at 800C. A reaction temperature of 950C was required for the supported Fe oxides to transfer the stored oxygen into oxidants effectively. Also, for the complex fuel gas environment, the supported Ni oxide was somewhat effective in reforming CH4 and other light hydrocarbons into CO, which may have benefits for the reduction of tar produced during biomass pyrolysis.

H.B. Huang; L. Aisyah; P.J. Ashman; Y.C. Leung; C.W. Kwong

2013-01-01T23:59:59.000Z

102

Hydrocarbon fouling of SCR during Premixed Charge Compression...  

Broader source: Energy.gov (indexed) [DOE]

Hydrocarbon fouling of SCR during Premixed Charge Compression Ignition (PCCI) combustion Hydrocarbon fouling of SCR during Premixed Charge Compression Ignition (PCCI) combustion...

103

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology...  

Broader source: Energy.gov (indexed) [DOE]

and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Algal Lipid Extraction and Upgrading to Hydrocarbons...

104

DOE Perspectives on Advanced Hydrocarbon-based Biofuels | Department...  

Broader source: Energy.gov (indexed) [DOE]

DOE Perspectives on Advanced Hydrocarbon-based Biofuels DOE Perspectives on Advanced Hydrocarbon-based Biofuels Zia Haq, DPA Coordinator, presentation on DOE Perspectives on...

105

Commercialization of IH2 Biomass Direct-to-Hydrocarbon Fuel...  

Broader source: Energy.gov (indexed) [DOE]

Commercialization of IH2 Biomass Direct-to-Hydrocarbon Fuel Technology Commercialization of IH2 Biomass Direct-to-Hydrocarbon Fuel Technology Breakout Session 2: Frontiers and...

106

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster presented at the 16th Directions...

107

Oxygen enriched fireflooding  

SciTech Connect (OSTI)

Both pure oxygen and enriched air have been considered in fireflooding for enhanced oil recovery. Laboratory and field testing have conclusively shown that oxygen is practical and cost effective for this application. For reservoirs that require a large volume of high pressure gas, oxygen is cheaper than air simply based on compression costs. Additional process benefits with oxygen include: Faster Oil Production; Lower Injection Pressure; Greater Well Spacing; Increased Carbon Dioxide Partial Pressure; Lower Gas-to-Oil Ratios; and Purer Produced Gas. These features provide a compelling case for oxygen, once the safety and materials compatibility issues are properly addressed.

Shahani, G.H.; Gunardson, H.H. [Air Products and Chemicals, Allentown, PA (United States)

1995-02-01T23:59:59.000Z

108

Pyrochlore-type catalysts for the reforming of hydrocarbon fuels  

DOE Patents [OSTI]

A method of catalytically reforming a reactant gas mixture using a pyrochlore catalyst material comprised of one or more pyrochlores having the composition A.sub.2-w-xA'.sub.wA''.sub.xB.sub.2-y-zB'.sub.yB''.sub.zO.sub.7-.DELTA.. Distribution of catalytically active metals throughout the structure at the B site creates an active and well dispersed metal locked into place in the crystal structure. This greatly reduces the metal sintering that typically occurs on supported catalysts used in reforming reactions, and reduces deactivation by sulfur and carbon. Further, oxygen mobility may also be enhanced by elemental exchange of promoters at sites in the pyrochlore. The pyrochlore catalyst material may be utilized in catalytic reforming reactions for the conversion of hydrocarbon fuels into synthesis gas (H.sub.2+CO) for fuel cells, among other uses.

Berry, David A. (Morgantown, WV); Shekhawat, Dushyant (Morgantown, WV); Haynes, Daniel (Morgantown, WV); Smith, Mark (Morgantown, WV); Spivey, James J. (Baton Rouge, LA)

2012-03-13T23:59:59.000Z

109

Preparation of synthetic hydrocarbon lubricants  

SciTech Connect (OSTI)

A process is described for preparing synthetic lubricating materials which process comprises: (a) reacting (i) at least a portion of a reaction product of the liquid phase oligomerization of propylene, butylene or mixtures thereof containing a C/sub 6/ olefin component, (ii) a linear olefin reactant having an average carbon number ranging from about 10 to about 18 in the presence of a catalyst, (b) separating from the reaction mixture of (a) hydrocarbons which distill at a temperature above about 660/sup 0/ F. (316/sup 0/ C.), and (c) hydrogenating the reaction product of (b) by contact with hydrogen with or without a catalyst at a temperature ranging from about 25/sup 0/ C. to about 300/sup 0/ C.

Johnson, T.H.

1986-10-07T23:59:59.000Z

110

Method for converting hydrocarbon fuel into hydrogen gas and carbon dioxide  

DOE Patents [OSTI]

A method for converting hydrocarbon fuel into hydrogen gas and carbon dioxide within a reformer 10 is disclosed. According to the method, a stream including an oxygen-containing gas is directed adjacent to a first vessel 18 and the oxygen-containing gas is heated. A stream including unburned fuel is introduced into the oxygen-containing gas stream to form a mixture including oxygen-containing gas and fuel. The mixture of oxygen-containing gas and unburned fuel is directed tangentially into a partial oxidation reaction zone 24 within the first vessel 18. The mixture of oxygen-containing gas and fuel is further directed through the partial oxidation reaction zone 24 to produce a heated reformate stream including hydrogen gas and carbon monoxide. Steam may also be mixed with the oxygen-containing gas and fuel, and the reformate stream from the partial oxidation reaction zone 24 directed into a steam reforming zone 26. High- and low-temperature shift reaction zones 64,76 may be employed for further fuel processing.

Clawson, Lawrence G. (Dover, MA); Mitchell, William L. (Belmont, MA); Bentley, Jeffrey M. (Westford, MA); Thijssen, Johannes H. J. (Cambridge, MA)

2000-01-01T23:59:59.000Z

111

Oxygen ion conducting materials  

DOE Patents [OSTI]

An oxygen ion conducting ceramic oxide that has applications in industry including fuel cells, oxygen pumps, oxygen sensors, and separation membranes. The material is based on the idea that substituting a dopant into the host perovskite lattice of (La,Sr)MnO.sub.3 that prefers a coordination number lower than 6 will induce oxygen ion vacancies to form in the lattice. Because the oxygen ion conductivity of (La,Sr)MnO.sub.3 is low over a very large temperature range, the material exhibits a high overpotential when used. The inclusion of oxygen vacancies into the lattice by doping the material has been found to maintain the desirable properties of (La,Sr)MnO.sub.3, while significantly decreasing the experimentally observed overpotential.

Vaughey, John (Elmhurst, IL); Krumpelt, Michael (Naperville, IL); Wang, Xiaoping (Downers Grove, IL); Carter, J. David (Bolingbrook, IL)

2003-01-01T23:59:59.000Z

112

Removal of trace olefins from aromatic hydrocarbons  

SciTech Connect (OSTI)

A process is described for treating a hydrocarbon process stream by converting trace quantities of olefinic impurities to nonolefinic hydrocarbons. The process comprises contacting the process stream, which contains trace olefins in an amount of from about 50 to about 2000 as measured by Bromine Index and at least 80% by weight of aromatic and naphthenic hydrocarbons having from 6 to 20 carbon atoms per molecule, at reaction conditions which ensure liquid phase operation with a solid catalyst composite comprising a crystalline aluminosilicate zeolite and a refractory inorganic oxide. A catalytic olefin-consuming alkylation reaction then produces an essentially olefinfree product stream with approximately the same quantity and distribution of aromatic and naphthenic hydrocarbons as contained in the process stream.

Sachtler, J.W.A.; Barger, P.T.

1989-01-03T23:59:59.000Z

113

Analyzing Biomass Conversion into Liquid Hydrocarbons  

Science Journals Connector (OSTI)

Variants of the FischerTropsch producer-gas conversion into liquid hydrocarbons are analyzed under the ... is attained in the reactions occurring in the biomass gasification. When the raw material is wood ... th...

V. D. Meshcheryakov; V. A. Kirillov

2002-09-01T23:59:59.000Z

114

Solubilization of petroleum hydrocarbons using biosurfactants  

E-Print Network [OSTI]

Low solubility of petroleum hydrocarbons in water is the major factor limiting the degradation rates of these compounds (Zhang and Miller, 1994). The fraction that is more soluble in the aqueous phase is degraded at higher rates, while less soluble...

Kanga, Shahrukh

2012-06-07T23:59:59.000Z

115

Transition metal-promoted oxygen ion conductors as oxidation catalyst  

SciTech Connect (OSTI)

A novel metal oxide composite catalyst for the complete oxidation of carbon monoxide and hydrocarbons was prepared by combining oxygen ion conducting materials with active transition metals. The oxygen ion conductors used were typical fluorite-type oxides, such as ceria, zirconia, and others. Active base metal catalysts, such as copper, were used as additives to promote the catalytic properties of oxygen ion conductors. The intimate contact of the two kinds of materials gave rise to a highly active oxidation catalyst. On Cu-Ce-O composite catalysts, 95% of carbon monoxide was oxidized by air at {approximately} 100 C. Complete methane oxidation on the same catalyst took place at {approximately} 550 C. When the stoichiometric amount of sulfur dioxide was sued to oxidize carbon monoxide, 96% of sulfur dioxide was reduced to elemental sulfur at temperatures above 460 C with 99% of sulfur dioxide conversion. This type of composite catalyst also showed excellent resistance to water poisoning.

Liu, W.; Sarofim, A. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Chemical Engineering; Flytzani-Stephanopoulos, M. [Tufts Univ., Medford, MA (United States). Dept. of Chemical Engineering

1994-12-31T23:59:59.000Z

116

Ionic Asymmetry and Solvent Excluded Volume Effects on Spherical Electric Double Layers: A Density Functional Approach  

SciTech Connect (OSTI)

In this article we present a classical density functional theory for electrical double layers of spherical macroions that extends the capabilities of conventional approaches by accounting for electrostatic ion correlations, size asymmetry and excluded volume effects. The approach is based on a recent approximation introduced by Hansen-Goos and Roth for the hard sphere excess free energy of inhomogeneous fluids (J. Chem. Phys. 124, 154506). It accounts for the proper and efficient description of the effects of ionic asymmetry and solvent excluded volume, especially at high ion concentrations and size asymmetry ratios including those observed in experimental studies. Additionally, we utilize a leading functional Taylor expansion approximation of the ion density profiles. In addition, we use the Mean Spherical Approximation for multi-component charged hard sphere fluids to account for the electrostatic ion correlation effects. These approximations are implemented in our theoretical formulation into a suitable decomposition of the excess free energy which plays a key role in capturing the complex interplay between charge correlations and excluded volume effects. We perform Monte Carlo simulations in various scenarios to validate the proposed approach, obtaining a good compromise between accuracy and computational cost. We use the proposed computational approach to study the effects of ion size, ion size asymmetry and solvent excluded volume on the ion profiles, integrated charge, mean electrostatic potential, and ionic coordination number around spherical macroions in various electrolyte mixtures. Our results show that both solvent hard sphere diameter and density play a dominant role in the distribution of ions around spherical macroions, mainly for experimental water molarity and size values where the counterion distribution is characterized by a tight binding to the macroion, similar to that predicted by the Stern model.

Medasani, Bharat; Ovanesyan, Zaven; Thomas, Dennis G.; Sushko, Maria L.; Marucho, Marcelo

2014-05-29T23:59:59.000Z

117

Clean Water Act (excluding Section 404). Environmental guidance program reference book: Revision 6  

SciTech Connect (OSTI)

This Reference Book contains a current copy of the Clean Water Act (excluding Section 404) and those regulations that implement the statutes and appear to be most relevant to US Department of Energy (DOE) activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. Updates that include important new requirements will be provided periodically. Questions concerning this Reference Book may be directed to Mark Petts, EH-231 (202/586-2609).

Not Available

1993-01-15T23:59:59.000Z

118

Methanol conversion to higher hydrocarbons  

SciTech Connect (OSTI)

Several indirect options exist for producing chemicals and transportation fuels from coal, natural gas, or biomass. All involve an initial conversion step to synthesis gas (CO and H{sub 2}). Presently, there are two commercial technologies for converting syngas to liquids: Fischer-Tropsch, which yields a range of aliphatic hydrocarbons with molecular weights determined by Schulz-Flory kinetics, and methanol synthesis. Mobil`s diversity of technology for methanol conversion gives the methanol synthesis route flexibility for production of either gasoline, distillate or chemicals. Mobil`s ZSM-5 catalyst is the key in several processes for producing chemicals and transportation fuels from methanol: MTO for light olefins, MTG for gasoline, MOGD for distillates. The MTG process has been commercialized in New Zealand since 1985, producing one-third of the country`s gasoline supply, while MTO and MOGD have been developed and demonstrated at greater than 100 BPD scale. This paper will discuss recent work in understanding methanol conversion chemistry and the various options for its use.

Tabak, S.A. [Mobil Research and Development Corp., Princeton, NJ (United States). Central Research Lab.

1994-12-31T23:59:59.000Z

119

Methods of reforming hydrocarbon fuels using hexaaluminate catalysts  

DOE Patents [OSTI]

A metal substituted hexaaluminate catalyst for reforming hydrocarbon fuels to synthesis gas of the general formula AB.sub.yAl.sub.12-yO.sub.19-.delta., A being selected from alkali metals, alkaline earth metals and lanthanide metals or mixtures thereof. A dopant or surface modifier selected from a transitions metal, a spinel of an oxygen-ion conductor is incorporated. The dopant may be Ca, Cs, K, La, Sr, Ba, Li, Mg, Ce, Co, Fe, Ir, Rh, Ni, Ru, Cu, Pe, Os, Pd, Cr, Mn, W, Re, Sn, Gd, V, Ti, Ag, Au, and mixtures thereof. The oxygen-ion conductor may be a perovskite selected from M'RhO.sub.3, M'PtO.sub.3, M'PdO.sub.3, M'IrO.sub.3, M'RuO.sub.3 wherein M'=Mg, Sr, Ba, La, Ca; a spinel selected from MRh.sub.2O.sub.4, MPt.sub.2O.sub.4, MPd.sub.2O.sub.4, MIr.sub.2O.sub.4, MRu.sub.2O.sub.4 wherein M=Mg, Sr, Ba, La, Ca and mixtures thereof; a florite is selected from M''O.sub.2.

Gardner, Todd H. (Morgantown, WV); Berry, David A. (Morgantown, WV); Shekhawat, Dushyant (Morgantown, WV)

2012-03-27T23:59:59.000Z

120

Regenerable MgO promoted metal oxide oxygen carriers for chemical looping combustion  

DOE Patents [OSTI]

The disclosure provides an oxygen carrier comprised of a plurality of metal oxide particles in contact with a plurality of MgO promoter particles. The MgO promoter particles increase the reaction rate and oxygen utilization of the metal oxide when contacting with a gaseous hydrocarbon at a temperature greater than about 725.degree. C. The promoted oxide solid is generally comprised of less than about 25 wt. % MgO, and may be prepared by physical mixing, incipient wetness impregnation, or other methods known in the art. The oxygen carrier exhibits a crystalline structure of the metal oxide and a crystalline structure of MgO under XRD crystallography, and retains these crystalline structures over subsequent redox cycles. In an embodiment, the metal oxide is Fe.sub.2O.sub.3, and the gaseous hydrocarbon is comprised of methane.

Siriwardane, Ranjani V.; Miller, Duane D.

2014-08-19T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Plants making oxygen  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Plants making oxygen Plants making oxygen Name: Doug Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: How many plants are needed to make enough oxygen for one person for one hour? We are experimenting with Anacharis plants. Replies: The problem can be solved when broken down into smaller questions: 1. How much oxygen does a person need in an hour? 2. How much oxygen does a plant produce in an hour? 3. Based on the above, how many plants will provide the oxygen needs of the person for the hour? Here is the solution to the first question: A resting, healthy adult on an average, cool day breathes in about 53 liters of oxygen per hour. An average, resting, health adult breathes in about 500 mL of air per breath. This is called the normal tidal volume. Now, 150 mL of this air will go to non- functioning areas of the lung, called the "dead space." The average breath rate for this average person is 12 breaths per minute. So, the amount of air breathed in by the person which is available for use is 12 x (500 mL -150 mL) = 4,200 mL/minute. Multiply by 60 to get 252,000 mL/hour. That is, every hour, the person will breathe in 252 L of air. Now, on an average, cool, clear day, only 21% of that air is oxygen. So, 21% of 252 L is 53 L. So, in an hour, the person breathes in about 53 L of oxygen.

122

Algae for Oxygen  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Algae for Oxygen Algae for Oxygen Name: Pam Burkardt Status: N/A Age: N/A Location: N/A Country: N/A Date: N/A Question: Hi, I am Pam Burkardt, a seventh grader at Fox Chapel School. I have a question on algae. I read somewhere that someday people might take bath tubs full of algae onto spaceships to provide oxygen for the crew. How much oxygen does algae give off, is this really possible? Replies: I think that most of the oxygen in the atmosphere comes in fact from one-celled plants in the oceans, like algae. They are likely to produce a lot of oxygen per unit weight because they don't have non-photosynthesizing bark, roots, branches, etc., nor (I think) a major dormant period like temperate-zone plants. The cost of space travel at present is dominated by the expense of heaving weight up into Earth orbit (it costs very little extra to send it to the Moon, for example, or Mars). For missions of short duration the weight of the compressed oxygen you need to carry is less than the weight of algae, water and extra plumbing you'd need to carry if you relied on algae to produce your oxygen. The important use of green plants would be in very long duration space flight (years) or permanent inhabitation of worlds like the Moon, where you need an unlimited supply of oxygen. Now if you want to fantasize, Venus' atmosphere is almost all carbon dioxide. Suppose you dropped a whole lot of specially gene-tailored one-celled plants into the atmosphere (not the surface, it's too hot). Why then they might eat up all the carbon dioxide and produce a breathable atmosphere. The "greenhouse effect" would go away, and Venus would become a nice habitable if tropical world only 50 million miles away.

123

Multimedia fate of petroleum hydrocarbons in the soil: Oil matrix of constructed biopiles  

Science Journals Connector (OSTI)

A dynamic multimedia fugacity model was used to evaluate the partitioning and fate of petroleum hydrocarbon fractions and aromatic indicator compounds within the soil: oil matrix of three biopiles. Each biopile was characterised by four compartments: air, water, soil solids and non-aqueous phase liquid (NAPL). Equilibrium partitioning in biopile A and B suggested that most fractions resided in the NAPL, with the exception of the aromatic fraction with an equivalent carbon number from 5 to 7 (EC5?7). In Biopile C, which had the highest soil organic carbon content (13%), the soil solids were the most important compartment for both light aliphatic fractions (EC5?6 and EC6?8) and aromatic fractions, excluding the EC16?21 and EC21?35. Our starting hypothesis was that hydrocarbons do not degrade within the NAPL. This was supported by the agreement between predicted and measured hydrocarbon concentrations in Biopile B when the degradation rate constant in NAPL was set to zero. In all scenarios, biodegradation in soil was predicted as the dominant removal process for all fractions, except for the aliphatic EC5?6 which was predominantly lost via volatilization. The absence of an explicit NAPL phase in the model yielded a similar prediction of total petroleum hydrocarbon (TPH) behaviour; however the predicted concentrations in the air and water phases were significantly increased with consequent changes in potential mobility. Further comparisons between predictions and measured data, particularly concentrations in the soil mobile phases, are required to ascertain the true value of including an explicit NAPL in models of this kind.

Frdric Coulon; Michael J. Whelan; Graeme I. Paton; Kirk T. Semple; Raffaella Villa; Simon J.T. Pollard

2010-01-01T23:59:59.000Z

124

Ancestral Nesson anticline and associated geothermal anomalies: Enhanced hydrocarbon generation controlled by crustal structure  

SciTech Connect (OSTI)

Hydrocarbon generation in the Williston basin is influenced by crustal motions and geothermal gradient anomalies associated with the ancestral Nesson anticline, a long-lived crustal structure located along 103{degree} longitude. This structure and its effects are particularly important in Canada where most petroleum source rocks were not sufficiently buried to have generated hydrocarbons in a normal geothermal gradient environment. High geothermal gradients associated with this structure raise the oil window and expand the region of source rock thermal maturity. Ancestral Nesson structure subsided differentially throughout the Phanerozoic, controlling paleobathymetry and facies over its crest. During the Upper Ordovician the structure was positive; rich potential petroleum source rocks were deposited on the western flank of the structure, generally excluding them from the zone of elevated heat flows. The total petroleum potential of this oil-source system exceeds 5.5 billion bbl of oil equivalent in Canada alone. Unfortunately, its exclusion from the maturation anomaly results in no more than 200 million bbl of oil being expelled from these sources. During the Middle Devonian, the structure was a negative feature that formed a starved subbasin separating the Winnipegosis and Elm Point carbonate shelves. Rich potential petroleum source rocks that accumulated on the crest of the structure at that time now overlie the region of elevated heat that flows and enhanced hydrocarbon maturation. Two billion barrels of oil are estimated to have been expelled from this source rock. Understanding the history and tectonics of the ancestral Nesson anticline is fundamental to a correct appraisal of hydrocarbon resources in the Williston basin.

Osadetz, K.G.; Snowdon, L.R. (Geological Survey of Canada, Calgary, Alberta (Canada))

1989-09-01T23:59:59.000Z

125

Description of Hot and Dense Hadron Gas Properties in a New Excluded-Volume model  

E-Print Network [OSTI]

A new equation of state for a hot and dense hadron gas (HG) is obtained where the finite hard-core size of baryons has been incorporated in a thermodynamically consistent formulation of excluded volume correction. Our model differs from other existing approaches on the following points. We assign a hard-core volume only to each baryon and mesons though possess a small volume but they can fuse and interpenetrate into one another. Use of the full quantum statistics is made in obtaining the grand canonical partition function where excluded-volume correction has been incorporated by explicitly integrating over volume. We thus find that the new model works even for the cases of extreme temperatures and/or densities where most of other approaches fail. The model does not violate causality even at extreme densities. The temperature and density dependence of various thermodynamical quantities, e.g. pressure, baryon density, entropy and energy density compare well with the results of other microscopic HG models. After suitable parametrization of the centre-of-mass energy in terms of temperature and baryon chemical potential, we explore some new freeze-out criteria which exhibit full independence of the collision energy and of the structures of the colliding nuclei. We further demonstrate the suitability of our model in explaining various experimental results of the multiplicity-ratios of various particles and their antiparticles. Finally, we use our excluded-volume model to obtain the transport behaviour of the hot and/or dense HG such as shear viscosity to entropy ratio, speed of sound etc. and compare the results with earlier calculations.

S. K. Tiwari; P. K. Srivastava; C. P. Singh

2011-11-10T23:59:59.000Z

126

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

In the present quarter, oxygen transport perovskite ceramic membranes are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-07-01T23:59:59.000Z

127

Gulf Hydrocarbon Inc | Open Energy Information  

Open Energy Info (EERE)

Hydrocarbon Inc Hydrocarbon Inc Jump to: navigation, search Name Gulf Hydrocarbon Inc Address 2016 Main St Place Houston, Texas Zip 77002 Sector Biofuels Product Wholesale marketing of biodiesel and ethanol to refiners, blenders and petroleum distributors Website http://www.gulfhydrocarbon.com Coordinates 29.749227°, -95.371693° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.749227,"lon":-95.371693,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

128

George A. Olah, Carbocation and Hydrocarbon Chemistry  

Office of Scientific and Technical Information (OSTI)

George A. Olah, Carbocation and Hydrocarbon Chemistry George A. Olah, Carbocation and Hydrocarbon Chemistry Resources with Additional Information · Patents George A. Olah Courtesy Rand Larson, Morningstar Productions George Olah received the 1994 Nobel Prize in Chemistry "for his contribution to carbocation chemistry" and his 'role in the chemistry of hydrocarbons. In particular, he developed superacids ... that are much stronger than ordinary acids, are non-nucleophilic, and are fluid at low temperatures. In such media ... carbocations are stable and their physical properties ... can be observed, thus allowing details of their structures to be determined. Besides trivalent ions ... Olah demonstrated the existence of higher coordinate carbocations ... . These species do not violate the octet rule, but involve 2-electron 3-center bonding. '1

129

Using supercritical fluids to refine hydrocarbons  

DOE Patents [OSTI]

This is a method to reactively refine hydrocarbons, such as heavy oils with API gravities of less than 20.degree. and bitumen-like hydrocarbons with viscosities greater than 1000 cp at standard temperature and pressure using a selected fluid at supercritical conditions. The reaction portion of the method delivers lighter weight, more volatile hydrocarbons to an attached contacting device that operates in mixed subcritical or supercritical modes. This separates the reaction products into portions that are viable for use or sale without further conventional refining and hydro-processing techniques. This method produces valuable products with fewer processing steps, lower costs, increased worker safety due to less processing and handling, allow greater opportunity for new oil field development and subsequent positive economic impact, reduce related carbon dioxide, and wastes typical with conventional refineries.

Yarbro, Stephen Lee

2014-11-25T23:59:59.000Z

130

Bifurcated Endograft (Excluder) in the Treatment of Isolated Iliac Artery Aneurysm: Preliminary Report  

SciTech Connect (OSTI)

The aim of this study was to evaluate the effectiveness of endovascular repair in the treatment of isolated iliac artery aneurysm (IAA) using Excluder bifurcated endograft. Eight consecutive patients with IAA were treated during a period of 45 months using Excluder bifurcated endograft. Two patients presented with isolated IAA rupture and were treated emergently, whereas the other six patients underwent elective treatment. All aneurysms lacked sufficient proximal necks and therefore were not suitable for tubular-shaped endograft. Follow-up imaging was performed at 1 week, at every 3 months during the first year, semiannually until 2 years, and annually afterward using angio-computed axial tomography and plain films. Technical success was achieved in all patients. No mortality was seen despite two patients having IAA rupture. Follow-up (12 to 60 months) was done in all but one patient. During this period, complications were observed in three patients. One patient developed sexual impotence at 3-month follow up; one patient presented unilateral gluteal claudication after the procedure, which resolved at 3 months; and one patient developed a graft porosity-related endoleak, which was successfully managed with placement of an additional ipsilateral iliac extension. Endovascular treatment of isolated IAA using bifurcated endograft is safe and can be an alternative to surgical treatment. The benefits from decreased morbidity and mortality of endoluminal treatment of isolated IAA using bifurcated endograft outweigh the minor complications associated with this technique, which are mostly related to occlusion of hypogastric arteries.

Zander, Tobias, E-mail: tobiaszander@gmx.de; Baldi, Sebastian; Rabellino, Martin [Las Palmas de Gran Canaria University, Endoluminal Vascular Department, Rambla Hospiten Clinic Group (Spain); Kirsch, David [Louisiana State University Health Sciences Center (United States); Llorens, Rafael; Zerolo, Ignacio [Las Palmas de Gran Canaria University, Department of Cardiosurgery, Rambla Hospiten Clinic Group (Spain); Qian, Zhong [Louisiana State University Health Sciences Center (United States); Maynar, Manuel [Las Palmas de Gran Canaria University, Endoluminal Vascular Department, Rambla Hospiten Clinic Group (Spain)

2009-09-15T23:59:59.000Z

131

E-Print Network 3.0 - aromatic hydrocarbons evaluated Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on monolithic hydrocarbon adsorbers were...

132

E-Print Network 3.0 - aromatic hydrocarbons part Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on monolithic hydrocarbon adsorbers were...

133

Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild  

Science Journals Connector (OSTI)

...association between cuticular hydrocarbon composition and desiccation...temperature on cuticular lipids and water balance in a desert Drosophila...interactions for cuticular hydrocarbon expression in Drosophila simulans...evolutionary roles of cuticular hydrocarbons in Diptera. In Insect hydrocarbons...

2013-01-01T23:59:59.000Z

134

Method for providing oxygen ion vacancies in lanthanide oxides  

DOE Patents [OSTI]

A method for desulfurization of fuel gases resulting from the incomplete combustion of sulfur containing hydrocarbons whereby the gases are treated with lanthanide oxides containing large numbers of oxygen-ion vacancies providing ionic porosity which enhances the ability of the lanthanide oxides to react more rapidly and completely with the sulfur in the fuel gases whereby the sulfur in such gases is reduced to low levels suitable for fuels for firing into boilers of power plants generating electricity with steam turbine driven generators, gas turbines, fuel cells and precursors for liquid fuels such as methanol and the like.

Kay, D. Alan R. (4305 Lakeshore Rd., Burlington, CA); Wilson, William G. (820 Harden Dr., Pittsburgh, PA 15229)

1989-12-05T23:59:59.000Z

135

Sustainable treatment of hydrocarbon-contaminated industrial land  

E-Print Network [OSTI]

Land contamination by petroleum hydrocarbons is a widespread and global environmental pollution issue from recovery and refining of crude oil and the ubiquitous use of hydrocarbons in industrial processes and applications. ...

Cunningham, Colin John

2012-06-25T23:59:59.000Z

136

Chemical nature of high-molecular hydrocarbons of gaseous condensates  

SciTech Connect (OSTI)

Mass spectrometry was used to study the group-structure composition of high-boiling 50 deg (200/degrees/-250/degrees/, 250/degrees/-300/degrees/, and 300/degrees/-350/degrees/C) fractions of East Turkmenistan condensates: the hydrocarbons composition is characterized by a high content of paraffinic hydrocarbons, and that of others by aromatic and naphthenic hydrocarbons. For all the condensates under investigation, as the boiling temperature of fractions increases, the content of paraffinic hydrocarbons in them is increased, while that of naphthenic hydrocarbons is reduced. The distribution of naphthenic hydrocarbons according to the number of rings is identical. In high-paraffin condensates, monoaromatic hydrocarbons consist mainly structures with alkyl substituents, but in condensates with a high content of aromatic and naphthenic hydrocarbons they consist mainly of structures with naphthenic substituents. 4 references, 1 figures, 2 tables.

Kul'dzhayev, B.A.; Makarov, V.V.; Sergiyenko, S.R.; Khramova, E.V.

1987-01-01T23:59:59.000Z

137

Chapter 9 - Chemical and Physical Properties of Hydrocarbons  

Science Journals Connector (OSTI)

Publisher Summary Hydrocarbons are the simplest organic compounds and contain only carbon and hydrogen but they can be straight chain or branched chain with the same empirical formula but showing differences in properties. Chemical change results in the hydrocarbon yielding a product that may be entirely different in composition to the starting hydrocarbonthe exception is the isomerization reaction where a straight-chain hydrocarbon is converted to a branched-chain hydrocarbon. Chemical properties of hydrocarbons describe the potential of hydrocarbons to undergo chemical change or reaction by virtue of the hydrocarbon structure. Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties that are of interest in the current context include: boiling point, melting point, density, vapor density, flash point, ignition temperature, and dew point.

James G. Speight

2011-01-01T23:59:59.000Z

138

Solar energy: Hydrogen and oxygen  

Science Journals Connector (OSTI)

Solar energy: Hydrogen and oxygen ... Demonstrating the electrolysis of water with solar energy. ...

John J. Farrell

1982-01-01T23:59:59.000Z

139

E-Print Network 3.0 - aromatic hydrocarbons methyl Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Renewable Energy 2 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: -fueled automobiles, most cyclic hydrocarbons are...

140

E-Print Network 3.0 - aromatic hydrocarbons progress Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collection: Chemistry 3 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: -fueled automobiles, most cyclic hydrocarbons are...

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

E-Print Network 3.0 - aromatic hydrocarbons fluorene Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrocarbons... Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic pollutants in urban environments... in the urbanized and rapidly urbanizing areas. Keywords...

142

E-Print Network 3.0 - aromatic hydrocarbon phenanthrene Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Abstract Polycyclic aromatic hydrocarbons (PAHs) and dioxins are lipophilic organic pollutants occurring... absorption, pig INTRODUCTION Polycyclic aromatic hydrocarbons (PAHs)...

143

E-Print Network 3.0 - aromatic hydrocarbons based Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aromatic Hydrocarbons Volatile Organic... Compounds Toxic Organic Halogenated Dioxins Furans (dioxins) Polycyclic Aromatic Hydrocarbons found... Rana Novini ATOC 3500 Burn...

144

E-Print Network 3.0 - aromatic hydrocarbons Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrocarbons... Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic pollutants in urban environments... in the urbanized and rapidly urbanizing areas. Keywords...

145

E-Print Network 3.0 - aromatic hydrocarbons pah5 Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

hydrocarbons (PAHs) are ubiquitous, recalcitrant, and potentially carcinogenic pollutants. Plants Summary: 1461 Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous,...

146

E-Print Network 3.0 - aromatic hydrocarbons inenvironmental Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrocarbons... Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic pollutants in urban environments... in the urbanized and rapidly urbanizing areas. Keywords...

147

E-Print Network 3.0 - aromatic hydrocarbon o-quinones Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrocarbons... Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic pollutants in urban environments... in the urbanized and rapidly urbanizing areas. Keywords...

148

E-Print Network 3.0 - aromatic hydrocarbons assessment Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aromatic Hydrocarbons Volatile Organic... Compounds Toxic Organic Halogenated Dioxins Furans (dioxins) Polycyclic Aromatic Hydrocarbons found... of airborne soot. The air...

149

Optical oxygen concentration monitor  

DOE Patents [OSTI]

A system for measuring and monitoring the concentration of oxygen uses as a light source an argon discharge lamp, which inherently emits light with a spectral line that is close to one of oxygen`s A-band absorption lines. In a preferred embodiment, the argon line is split into sets of components of shorter and longer wavelengths by a magnetic field of approximately 2,000 Gauss that is parallel to the light propagation from the lamp. The longer wavelength components are centered on an absorption line of oxygen and thus readily absorbed, and the shorter wavelength components are moved away from that line and minimally absorbed. A polarization modulator alternately selects the set of the longer wavelength, or upshifted, components or the set of the shorter wavelength, or downshifted, components and passes the selected set to an environment of interest. After transmission over a path through that environment, the transmitted optical flux of the argon line varies as a result of the differential absorption. The system then determines the concentration of oxygen in the environment based on the changes in the transmitted optical flux between the two sets of components. In alternative embodiments modulation is achieved by selectively reversing the polarity of the magnetic field or by selectively supplying the magnetic field to either the emitting plasma of the lamp or the environment of interest. 4 figs.

Kebabian, P.

1997-07-22T23:59:59.000Z

150

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enzymes Acid + Caustic Wastewater Treatment Process Heat and Power Integration Biogas + Sludge Fuel Finishing (hydroprocessing, as needed) Electricity Hydrogen Hydrocarbon...

151

THE ELECTRON MICROSCOPY OF HYDROCARBON PRODUCTION IN PARTHENIUM ARGENTATUM (GUAYULE)  

E-Print Network [OSTI]

conversion of solar energy is the production of hydrocarbonsproduction of hydrocarbons. Mankind's use of biologically converted solar energy

Bauer, T.E.

2010-01-01T23:59:59.000Z

152

aromatic hydrocarbons coated: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: ??Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants, known human lung carcinogens, and potent mammary carcinogens in animal models....

153

THE INFRARED SPECTRA OF POLYCYCLIC AROMATIC HYDROCARBONS WITH SOME OR ALL HYDROGEN ATOMS REMOVED  

SciTech Connect (OSTI)

The loss of one hydrogen from C{sub 96}H{sub 24} does not significantly affect the infrared spectra of the neutral, cation, or anion. Excluding a very weak C-C stretching band at 5.1 ?m, the loss of two adjacent duo hydrogens does not significantly affect the spectra compared with the parent. Removing all of the hydrogen atoms significantly increases the intensity of the new C-C stretching band, and, for the cation, shifts it to a longer (5.2 ?m) wavelength. Observations show a feature near 5.25 ?m, which has been attributed to overtone and combination bands from polycyclic aromatic hydrocarbons (PAHs). This current work suggests that dehydrogenated PAHs might also contribute to this band, but its weakness implies that fully dehydrogenated cationic or dicationic species are very rare.

Bauschlicher, Charles W. Jr. [Entry Systems and Technology Division, Mail Stop 230-3, NASA Ames Research Center, Moffett Field, CA 94035 (United States); Ricca, Alessandra, E-mail: Charles.W.Bauschlicher@nasa.gov, E-mail: Alessandra.Ricca-1@nasa.gov [Carl Sagan Center, SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043 (United States)

2013-10-20T23:59:59.000Z

154

Production of hydrocarbons from hydrates. [DOE patent application  

DOE Patents [OSTI]

An economical and safe method of producing hydrocarbons (or natural gas) from in situ hydrocarbon-containing hydrates is given. Once started, the method will be self-driven and will continue producing hydrocarbons over an extended period of time (i.e., many days).

McGuire, P.L.

1981-09-08T23:59:59.000Z

155

Molecular carbon isotopic evidence for the origin of geothermal hydrocarbons  

Science Journals Connector (OSTI)

... in the flask's headspace. This procedure produced negligible amounts of contaminating hydrocarbons. The geothermal hydrocarbons were separated and combusted, and the carbon dioxide product purified and measured using ... of the pyrolysis and spark discharge experiments, b, Isotopic abundance of hydrocarbons from four geothermal localities as follows: D, Cerro Prieto, well M-5, sampled January 1979; ...

David J. Des Marais; Jason H. Donchin; Nancy L. Nehring; Alfred H. Truesdell

1981-08-27T23:59:59.000Z

156

Infection with Strains of Citrus Tristeza Virus Does Not Exclude Superinfection by Other Strains of the Virus  

Science Journals Connector (OSTI)

...distinct strains. However, this model does not explain how hybrid viruses containing...Graft-transmissible diseases of detritus: handbook for detection and diagnosis. FAO, Rome...Infection with strains of Citrus tristeza virus does not exclude superinfection by other strains...

Svetlana Y. Folimonova; Cecile J. Robertson; Turksen Shilts; Alexey S. Folimonov; Mark E. Hilf; Stephen M. Garnsey; William O. Dawson

2009-11-18T23:59:59.000Z

157

On The Importance of Organic Oxygen for Understanding Organic Aerosol  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

On The Importance of Organic Oxygen for Understanding Organic Aerosol On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Title On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Publication Type Journal Article Year of Publication 2006 Authors Pang, Yanbo, B. J. Turpin, and Lara A. Gundel Journal Journal of Aerosol Science and Technology Volume 40 Start Page Chapter Pagination 128-133 Abstract This study shows how aerosol organic oxygen data could provide new and independent information about organic aerosol mass, aqueous solubility of organic aerosols, formation of secondary organic aerosol (SOA) and the relative contributions of anthropogenic and biogenic sources. For more than two decades atmospheric aerosol organic mass concentration has usually been estimated by multiplying the measured carbon content by an assumed organic mass (OM)-to-organic carbon (OC ) factor of 1.4. However, this factor can vary from 1.0 to 2.5 depending on location. This great uncertainty about aerosol organic mass limits our understanding of the influence of organic aerosol on climate, visibility and health.New examination of organic aerosol speciation data shows that the oxygen content is the key factor responsible for the observed range in the OM-to-OC factor. When organic oxygen content is excluded, the ratio of non-oxygen organic mass to carbon mass varies very little across different environments (1.12 to 1.14). The non-oxygen-OM-to-non-oxygen OC factor for all studied sites (urban and non-urban) is 1.13± 0.02. The uncertainty becomes an order of magnitude smaller than the uncertainty in the best current estimates of organic mass to organic carbon ratios (1.6± 0.2 for urban and 2.1± 0.2 for non-urban areas). When aerosol organic oxygen data become available, organic aerosol mass can be quite accurately estimated using just OC and organic oxygen (OO) without the need to know whether the aerosol is fresh or aged. In addition, aerosol organic oxygen data will aid prediction of water solubility since compounds with OO-to-OC higher than 0.4 have water solubilities higher than 1g per 100 g water

158

Oxygen in Underwater Cave  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen in Underwater Cave Oxygen in Underwater Cave Name: Natalie Status: student Grade: 9-12 Location: HI Country: USA Date: Spring 2011 Question: Is it possible for there to be free oxygen in an underwater cave? If it is, then how does it work? Replies: Yes it is possible as I have personally experienced. If the cave roof rises to a level above the water, air dissolved in the water will slowly out gas until the water is at the same level at all places. A pocket of breathable air will form. In many caves the roof dips below water level in one place but it above it on both sides. Think of a U shaped tube where the bottom of the U is blocked by water. This is called a siphon and I have passed through many of these to find breathable air on the other side. R. W. "Bob" Avakian Oklahoma State Univ. Inst. of Technology

159

Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates  

DOE Patents [OSTI]

A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus, and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

Elliott, G.R.B.; Barraclough, B.L.; Vanderborgh, N.E.

1981-02-19T23:59:59.000Z

160

Apparatus for recovering gaseous hydrocarbons from hydrocarbon-containing solid hydrates  

DOE Patents [OSTI]

A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus, carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

Elliott, Guy R. B. (Los Alamos, NM); Barraclough, Bruce L. (Santa Fe, NM); Vanderborgh, Nicholas E. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates  

DOE Patents [OSTI]

A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus, carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

Elliott, Guy R. B. (Los Alamos, NM); Barraclough, Bruce L. (Santa Fe, NM); Vanderborgh, Nicholas E. (Los Alamos, NM)

1983-01-01T23:59:59.000Z

162

Nonlinear dependence of the solubility of water in hydrocarbons on the molar volume of the hydrocarbon  

Science Journals Connector (OSTI)

The solubility of water in fifty hydrocarbon solvents at 20C is estimated by ... in nonspecific cohesion forces, and assuming that water is primarily monomeric in solution, the prediction ... breaking of the H-b...

Paul Ruelle; Ulrich W. Kesselring

1996-07-01T23:59:59.000Z

163

Mass Transfer of Polynuclear Aromatic Hydrocarbons from  

E-Print Network [OSTI]

of the individual components of four synthetic dense non-aqueous phase liquid (DNAPL) mixtures into the aqueous hydrocarbons (PAHs), were designed to serve as models for coal tars and creosotes. The reactor employed (PAHs) are often present in the environment as components of such dense non- aqueous phase liquids

Peters, Catherine A.

164

Caenorhabditis elegans orthologs of the aryl hydrocarbon receptor and its heterodimerization partner the aryl hydrocarbon receptor nuclear translocator  

Science Journals Connector (OSTI)

...WI 53706 The aryl hydrocarbon receptor (AHR) is...The mammalian aryl hydrocarbon receptor (AHR) is...complex with the 90-kDa heat shock protein (HSP90) and...polycyclic aromatic hydrocarbons such as {beta...cigarette smoking and other combustion processes, initiate...

Jo Anne Powell-Coffman; Christopher A. Bradfield; William B. Wood

1998-01-01T23:59:59.000Z

165

Caenorhabditis elegans orthologs of the aryl hydrocarbon receptor and its heterodimerization partner the aryl hydrocarbon receptor nuclear translocator  

Science Journals Connector (OSTI)

...mammalian aryl hydrocarbon receptor...the 90-kDa heat shock protein (HSP90...polycyclic aromatic hydrocarbons such as {beta...smoking and other combustion processes...we searched data from the...Helminth HSP90 Heat-Shock Proteins...Molecular Sequence Data Protein Binding...Receptors, Aryl Hydrocarbon genetics metabolism...

Jo Anne Powell-Coffman; Christopher A. Bradfield; William B. Wood

1998-01-01T23:59:59.000Z

166

Direct catalytic conversion of methane and light hydrocarbon gases. Final report, October 1, 1986--July 31, 1989  

SciTech Connect (OSTI)

This project explored conversion of methane to useful products by two techniques that do not involve oxidative coupling. The first approach was direct catalytic dehydrocoupling of methane to give hydrocarbons and hydrogen. The second approach was oxidation of methane to methanol by using heterogenized versions of catalysts that were developed as homogeneous models of cytochrome-P450, an enzyme that actively hydroxylates hydrocarbons by using molecular oxygen. Two possibilities exist for dehydrocoupling of methane to higher hydrocarbons: The first, oxidative coupling to ethane/ethylene and water, is the subject of intense current interest. Nonoxidative coupling to higher hydrocarbons and hydrogen is endothermic, but in the absence of coke formation the theoretical thermodynamic equilibrium yield of hydrocarbons varies from 25% at 827{degrees}C to 65% at 1100{degrees}C (at atmospheric pressure). In this project we synthesized novel, highly dispersed metal catalysts by attaching metal clusters to inorganic supports. The second approach mimics microbial metabolism of methane to produce methanol. The methane mono-oxygenase enzyme responsible for the oxidation of methane to methanol in biological systems has exceptional selectivity and very good rates. Enzyme mimics are systems that function as the enzymes do but overcome the problems of slow rates and poor stability. Most of that effort has focused on mimics of cytochrome P-450, which is a very active selective oxidation enzyme and has a metalloporphyrin at the active site. The interest in nonporphyrin mimics coincides with the interest in methane mono-oxygenase, whose active site has been identified as a {mu}-oxo dinuclear iron complex.We employed mimics of cytochrome P-450, heterogenized to provide additional stability. The oxidation of methane with molecular oxygen was investigated in a fixed-bed, down-flow reactor with various anchored metal phthalocyanines (PC) and porphyrins (TPP) as the catalysts.

Wilson, R.B. Jr.; Posin, B.M.; Chan, Yee-Wai

1995-06-01T23:59:59.000Z

167

Hydrocarbon composition of crude oils near the Caspian depression  

SciTech Connect (OSTI)

The structural-group composition of hydrocarbons of Mesozoic crude oils near the Caspian depression was investigated by mass-spectrometry, followed by the analysis of the mass-spectra using a computer. The distribution of naphthenic hydrocarbons, according to the number of rings and of aromatic hydrocarbons, according to the degree of hydrogen unsaturation is similar for all the crude oils examined. The hydrocarbon composition of Mesozoic crude oils is characterized by a reduction in the content of aliphatic hydrocarbons and alkyl benzenes.

Botneva, T.A.; Khramova, E.V.; Nekhamkina, L.G.; Polyakova, A.A.

1983-01-01T23:59:59.000Z

168

Composition of paraffinic and naphthenic hydrocarbons in petroleum asphalts  

SciTech Connect (OSTI)

Uses a combination of chromatographic, chemical, and spectroscopic methods to determine the composition of the paraffinic and naphthenic hydrocarbons recovered from asphalts. Monitors the completeness of separation of the hydrocarbons from the aromatics on the basis of UV spectra. Finds that in the mixture of adduct-forming hydrocarbons, along with the n-paraffins there were admixtures of isoparaffins and longchain alkylnaphthenes. Concludes that a comparison of the structural-group composition of the asphalt fractions from the different crudes shows that there are only slight differences in the structure of the paraffinic/naphthenic hydrocarbons present in these asphalts, particularly with regard to those hydrocarbons that do not react with urea.

Botvin'eva, A.M.; Dubkova, R.V.; Shkredova, N.A.

1982-11-01T23:59:59.000Z

169

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

In the present quarter, the possibility of using a more complex interfacial engineering approach to the development of reliable and stable oxygen transport perovskite ceramic membranes/metal seals is discussed. Experiments are presented and ceramic/metal interactions are characterized. Crack growth and fracture toughness of the membrane in the reducing conditions are also discussed. Future work regarding this approach is proposed are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2003-01-01T23:59:59.000Z

170

Optical oxygen concentration monitor  

DOE Patents [OSTI]

A system for measuring and monitoring the concentration of oxygen uses as a light source an argon discharge lamp, which inherently emits light with a spectral line that is close to one of oxygen's A-band absorption lines. In a preferred embodiment, the argon line is split into sets of components of shorter and longer wavelengths by a magnetic field of approximately 2000 Gauss that is parallel to the light propagation from the lamp. The longer wavelength components are centered on an absorption line of oxygen and thus readily absorbed, and the shorter wavelength components are moved away from that line and minimally absorbed. A polarization modulator alternately selects the set of the longer wavelength, or upshifted, components or the set of the shorter wavelength, or downshifted, components and passes the selected set to an environment of interest. After transmission over a path through that environment, the transmitted optical flux of the argon line varies as a result of the differential absorption. The system then determines the concentration of oxygen in the environment based on the changes in the transmitted optical flux between the two sets of components. In alternative embodiments modulation is achieved by selectively reversing the polarity of the magnetic field or by selectively supplying the magnetic field to either the emitting plasma of the lamp or the environment of interest.

Kebabian, Paul (Acton, MA)

1997-01-01T23:59:59.000Z

171

Liquefaction of cellulosic wastes. 6: Oxygen compounds in pyrolytic oil and water fractions  

SciTech Connect (OSTI)

Liquid hydrocarbon oil and water have been produced from the liquefaction of cellulosic matter present in municipal solid wastes. The produced pyrolytic oil and water fraction seemed to be contaminated with considerable amounts of oxygen compounds as compared with fuels derived from a petroleum origin. The oxygen compounds included organic acids (fatty and naphthenic acids), phenols, and carbonyl compounds. These classes of oxygen compounds were extracted selectively from the pyrolytic oils and water using chemical extraction methods. Methyl esters of fatty acids and 2,4-dinitrophenylhydrazones of carbonyl compounds were identified by gas chromatography and thin layer chromatography, respectively. It was suggested that the identified oxygen compounds could be produced from the pyrolysis of volatiles (e.g., levoglucosane, which is the primary product of cellulose depolymerization) via different mechanistic pathways.

Gharieb, H.K.; Faramawy, S.; El-Amrousi, F.A.; El-Sabagh, S.M. [Egyptian Petroleum Research Inst., Cairo (Egypt)

1998-07-01T23:59:59.000Z

172

HYDROCARBONS FROM PLANTS: ANALYTICAL METHODS AND OBSERVATIONS  

SciTech Connect (OSTI)

We have suggested that certain plants rich in hydrocarbon-like materials might be cultivated for renewable photosynthetic products. Two species were selected for experimental plantations: Euphorbia lathyris, an annual from seed and Euphorbia tirucalli, a perennial from cuttings, The yield from each species is over 10 barrels of oil/acre/year without genetic or agronomic improvement. In addition to plants, there are trees, such as species of Copaifera in Brazil and other tropical areas, which produce a diesel-like oil upon tapping. Each tree produces approximately 40 liters of hydrocarbon per year, and this material can be used directly by a diesel-powered car. Further efforts to develop plants as alternate energy sources are underway, as well as a continuing search for additional plant species throughout the world which have a similar capability.

Calvin, Melvin

1980-05-01T23:59:59.000Z

173

High pressure oxygen furnace  

DOE Patents [OSTI]

A high temperature high pressure oxygen furnace having a hybrid partially externally heated construction is disclosed. A metallic bar fabricated from an alloy having a composition of at least 45% nickel, 15% chrome, and 10% tungsten is utilized, the preferred alloy including 55% nickel, 22% chrome, 14% tungsten, 2% molybdenum, 3% iron (maximum) and 5% cobalt (maximum). The disclosed alloy is fabricated into 11/4 inch bar stock and has a length of about 17 inches. This bar stock is gun drilled for over 16 inches of its length with 0.400 inch aperture to define a closed high temperature, high pressure oxygen chamber. The opposite and closed end of the bar is provided with a small support aperture into which both a support and a thermocouple can be inserted. The closed end of the gun drilled bar is inserted into an oven, preferably heated by standard nickel chrome electrical elements and having a heavily insulated exterior. 5 figs.

Morris, D.E.

1992-07-14T23:59:59.000Z

174

High pressure oxygen furnace  

DOE Patents [OSTI]

A high temperature high pressure oxygen furnace having a hybrid partially externally heated construction is disclosed. A metallic bar fabricated from an alloy having a composition of at least 45% nickel, 15% chrome, and 10% tungsten is utilized (the preferred alloy including 55% nickel, 22% chrome, 14% tungsten, 2% molybdenum, 3% iron (maximum) and 5% cobalt (maximum). The disclosed alloy is fabricated into 11/4 inch bar stock and has a length of about 17 inches. This bar stock is gun drilled for over 16 inches of its length with 0.400 inch aperture to define a closed high temperature, high pressure oxygen chamber. The opposite and closed end of the bar is provided with a small support aperture into which both a support and a thermocouple can be inserted. The closed end of the gun drilled bar is inserted into an oven, preferably heated by standard nickel chrome electrical elements and having a heavily insulated exterior.

Morris, Donald E. (Kensington, CA)

1992-01-01T23:59:59.000Z

175

Getter pump for hydrogen and hydrocarbon gases  

DOE Patents [OSTI]

A gettering device for hydrogen isotopes and gaseous hydrocarbons based on the interaction of a plasma and graphite used as cathodic material. The plasma is maintained at a current density within the range of about 1 to about 1000 mA/cm/sup 2/. The graphite may be heated to a temperature greater than 1000/degree/C. The new device offers high capacity, low noise, and gas species selectivity. 2 figs.

Hsu, Wen Ling

1987-10-14T23:59:59.000Z

176

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In the previous research, the reference point of oxygen occupancy was determined and verified. In the current research, the oxygen occupancy was investigated at 1200 C as a function of oxygen activity and compared with that at 1000 C. The cause of bumps at about 200 C was also investigated by using different heating and cooling rates during TGA. The fracture toughness of LSFT and dual phase membranes at room temperature is an important mechanical property. Vicker's indentation method was used to evaluate this toughness. Through this technique, a K{sub Ic} (Mode-I Fracture Toughness) value is attained by means of semi-empirical correlations between the indentation load and the length of the cracks emanating from the corresponding Vickers indentation impression. In the present investigation, crack propagation behavior was extensively analyzed in order to understand the strengthening mechanisms involved in the non-transforming La based ceramic composites. Cracks were generated using Vicker's indenter and used to identify and evaluate the toughening mechanisms involved. Preliminary results of an electron microscopy study of the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appear to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. Modeling of the isotopic transients on operating membranes (LSCrF-2828 at 900 C) and a ''frozen'' isotope profile have been analyzed in conjunction with a 1-D model to reveal the gradient in oxygen diffusivity through the membrane under conditions of high chemical gradients.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-08-01T23:59:59.000Z

177

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. The in situ electrical conductivity and Seebeck coefficient measurements were made on LSFT at 1000 and 1200 C over the oxygen activity range from air to 10{sup -15} atm. The electrical conductivity measurements exhibited a p to n type transition at an oxygen activity of 1 x 10{sup -10} at 1000 C and 1 x 10{sup -6} at 1200 C. Thermogravimetric studies were also carried out over the same oxygen activities and temperatures. Based on the results of these measurements, the chemical and mechanical stability range of LSFT were determined and defect structure was established. The studies on the fracture toughness of the LSFT and dual phase membranes exposed to air and N{sub 2} at 1000 C was done and the XRD and SEM analysis of the specimens were carried out to understand the structural and microstructural changes. The membranes that are exposed to high temperatures at an inert and a reactive atmosphere undergo many structural and chemical changes which affect the mechanical properties. A complete transformation of fracture behavior was observed in the N{sub 2} treated LSFT samples. Further results to investigate the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appear to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. Recent results on transient kinetic data are presented. The 2-D modeling of oxygen movement has been undertaken in order to fit isotope data. The model is used to study ''frozen'' profiles in patterned or composite membranes.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-02-01T23:59:59.000Z

178

Oxygen abundances in the most oxygen-rich spiral galaxies  

E-Print Network [OSTI]

Oxygen abundances in the spiral galaxies expected to be richest in oxygen are estimated. The new abundance determinations are based on the recently discovered ff-relation between auroral and nebular oxygen line fluxes in HII regions. We find that the maximum gas-phase oxygen abundance in the central regions of spiral galaxies is 12+log(O/H)~8.75. This value is significantly lower than the previously accepted value. The central oxygen abundance in the Milky Way is similar to that in other large spirals.

L. S. Pilyugin; T. X. Thuan; J. M. Vilchez

2006-01-06T23:59:59.000Z

179

Oxygen Concentration Microgradients for Cell Culture  

E-Print Network [OSTI]

The Chemotactic Effect of Oxygen on Bacteria, J. Pathol.Measurement and Control of Oxygen Levels in MicrofluidicA Microfabricated Electrochemical Oxygen Generator for High-

Park, Jaehyun

2010-01-01T23:59:59.000Z

180

Oxygen Transport Membranes  

SciTech Connect (OSTI)

The focus of this research was to develop new membrane materials by synthesizing different compounds and determining their defect structures, crystallographic structures and electrical properties. In addition to measuring electrical conductivity, oxygen vacancy concentration was also evaluated using thermogravimetry, Neutron diffraction and Moessbauer Spectroscopy. The reducing conditions (CO{sub 2}/CO/H{sub 2} gas mixtures with steam) as encountered in a reactor environment can be expected to have significant influence on the mechanical properties of the oxides membranes. Various La based materials with and without Ti were selected as candidate membrane materials for OTM. The maximum electrical conductivity of LSF in air as a function of temperature was achieved at < 600 C and depends on the concentration of Sr (acceptor dopant). Oxygen occupancy in LSF was estimated using Neutron diffractometry and Moessbauer Spectroscopy by measuring magnetic moment changes depending on the Fe{sup 3+} and Fe{sup 4+} ratio. After extensive studies of candidate materials, lanthanum ferrites (LSF and LSFT) were selected as the favored materials for the oxygen transport membrane (OTM). LSF is a very good material for an OTM because of its high electronic and oxygen ionic conductivity if long term stability and mechanical strength are improved. LSFT not only exhibits p-type behavior in the high oxygen activity regime, but also has n-type conduction in reducing atmospheres. Higher concentrations of oxygen vacancies in the low oxygen activity regime may improve the performance of LSFT as an OTM. The hole concentration is related to the difference in the acceptor and donor concentration by the relation p = [Sr'{sub La}]-[Ti{sm_bullet}{sub Fe}]. The chemical formulation predicts that the hole concentration is, p = 0.8-0.45 or 0.35. Experimental measurements indicated that p is about {approx} 0.35. The activation energy of conduction is 0.2 eV which implies that LSCF conducts via the small polaron conduction mechanism. Scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) were used to develop strategies to detect and characterize vacancy creation, dopant segregations and defect association in the oxygen conducting membrane material. The pO{sub 2} and temperature dependence of the conductivity, non-stoichiometry and thermal-expansion behavior of compositions with increasing complexity of substitution on the perovskite A and B sites were studied. Studies with the perovskite structure show anomalous behavior at low oxygen partial pressures (<10{sup -5} atm). The anomalies are due to non-equilibrium effects and can be avoided by using very strict criteria for the attainment of equilibrium. The slowness of the oxygen equilibration kinetics arises from two different mechanisms. In the first, a two phase region occurs between an oxygen vacancy ordered phase such as brownmillerite SrFeO{sub 2.5} and perovskite SrFeO{sub 3-x}. The slow kinetics is associated with crossing the two phase region. The width of the miscibility gap decreases with increasing temperature and consequently the effect is less pronounced at higher temperature. The preferred kinetic pathway to reduction of perovskite ferrites when the vacancy concentration corresponds to the formation of significant concentrations of Fe{sup 2+} is via the formation of a Ruddlesden-Popper (RP) phases as clearly observed in the case of La{sub 0.5}Sr{sub 0.5}FeO{sub 3-x} where LaSrFeO{sub 4} is found together with Fe. In more complex compositions, such as LSFTO, iron or iron rich phases are observed locally with no evidence for the presence of discrete RP phase. Fracture strength of tubular perovskite membranes was determined in air and in reducing atmospheric conditions. The strength of the membrane decreased with temperature and severity of reducing conditions although the strength distribution (Weibull parameter, m) was relatively unaltered. Surface and volume dominated the fracture origins and the overall fracture was purely transgranular. The dual phas

S. Bandopadhyay

2008-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. Thermogravimetric analysis (TGA) was carried out on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} to investigate oxygen deficiency ({delta}) of the sample. The TGA was performed in a controlled atmosphere using oxygen, argon, carbon monoxide and carbon dioxide with adjustable gas flow rates. In this experiment, the weight loss and gain of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} was directly measured by TGA. The weight change of the sample was evaluated at between 600 and 1250 C in air or 1000 C as a function of oxygen partial pressure. The oxygen deficiencies calculated from TGA data as a function of oxygen activity and temperature will be estimated and compared with that from neutron diffraction measurement in air. The LSFT and LSFT/CGO membranes were fabricated from the powder obtained from Praxair Specialty Ceramics. The sintered membranes were subjected to microstructure analysis and hardness analysis. The LSFT membrane is composed of fine grains with two kinds of grain morphology. The grain size distribution was characterized using image analysis. In LSFT/CGO membrane a lot of grain pullout was observed from the less dense, porous phase. The hardness of the LSFT and dual phase membranes were studied at various loads. The hardness values obtained from the cross section of the membranes were also compared to that of the values obtained from the surface. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. Measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} as a function of temperature an oxygen partial pressure are reported. Further analysis of the dilatometry data obtained previously is presented. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-02-01T23:59:59.000Z

182

OXIDATION OF DRY HYDROCARBONS AT HIGH-POWER DENSITY ANODES  

SciTech Connect (OSTI)

This work builds upon discoveries by the University of Pennsylvania and others pertaining to the oxidation of dry hydrocarbon fuels in high temperature solid oxide fuel cells. The work reported here was restricted primarily to dry methane and confirms that YSZ-based cells, having ceria in the anode as a catalyst and copper in the anode as a current collector, can operate on dry methane for extended periods. Thirty-three lab-scale cells of various designs were fabricated and operated under a variety of conditions. The longest-lived cell gave stable performance on dry methane at 800 C for over 305 hours. Only slight carbon deposition was noted at the completion of the test. A corresponding nickel/YSZ-based anode would have lasted for less than an hour under these test conditions (which included open circuit potential measurements) before carbon fouling essentially destroyed the cell. The best performing cell achieved 112 mW/cm{sub 2} on dry methane at 800 C. Several problems were encountered with carbon fouling and declining open circuit voltages in many of the test cells after switching from operation on hydrogen to dry methane. Although not rigorously confirmed by experimentation, the results suggested that air infiltration through less than perfect perimeter seals or pinholes in the electrolytes, or both gave rise to conditions that caused the carbon fouling and OCV decline. Small amounts of air reacting with methane in a partial oxidation reaction could produce carbon monoxide that, in turn, would deposit the carbon. If this mechanism is confirmed, it implies that near perfect hardware is required for extended operation. Some evidence was also found for the formation of electrical shorts, probably from carbon deposits bridging the electrolyte. Work with odorized methane and with methane containing 100-ppm hydrogen sulfide confirmed that copper is stable at 800 C in dry hydrocarbon fuels in the presence of sulfur. In a number of cases, but not exclusively, the performance life on dry methane with sulfur compounds was much longer than with dry methane alone. The effect of sulfur compounds in these cases appeared to correlate with inhibition of carbon deposition. Mixed results were obtained for the effect of the sulfur compounds on power density. Progress also was made in understanding the mechanisms involved in direct utilization of dry natural gas. Evidence was developed for three possible mechanisms for dry methane utilization in addition to the usually cited mechanism--direct oxidation of methane by oxygen anions. Further work is required at a fundamental level before the knowledge gained here can be translated into higher levels of performance.

K.Krist; O. Spaldon-Stewart; R. Remick

2004-03-01T23:59:59.000Z

183

Methods of Reforming Hydrocarbon Fuels Using Hexaaluminate Catalysts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Reforming Hydrocarbon Fuels Using of Reforming Hydrocarbon Fuels Using Hexaaluminate Catalysts Contact NETL Technology Transfer Group techtransfer@netl.doe.gov May 2012 Opportunity Research is currently active on the technology "Methods of Reforming Hydrocarbon Fuels Using Hexaaluminate Catalysts." The technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview This invention discloses a method to reform hydrocarbon fuels using hexa- aluminate catalysts. In general, the method successfully disrupts the forma- tion of carbon that leads to the deactivation of the catalyst, a key element in the reforming of hydrocarbon fuels. When researchers are designing catalysts to reform hydrocarbon fuels, one

184

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

Ti doping on La{sub 1-x}Sr{sub x}FeO{sub 3-{delta}} (LSF) tends to increase the oxygen equilibration kinetics of LSF in lower oxygen activity environment because of the high valence state of Ti. However, the addition of Ti decreases the total conductivity because the acceptor ([Sr{prime}{sub La}]) is compensated by the donor ([Ti{sub Fe}{sup {sm_bullet}}]) which decreases the carrier concentration. The properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 1-x}Ti{sub x}O{sub 3-{delta}} (LSFT, x = 0.45) have been experimentally and theoretically investigated to elucidate (1) the dependence of oxygen occupancy and electrochemical properties on temperature and oxygen activity by thermogravimetric analysis (TGA) and (2) the electrical conductivity and carrier concentration by Seebeck coefficient and electrical measurements. In the present study, dual phase (La{sub 0.2}Sr{sub 0.8}Fe{sub 0.6}Ti{sub 0.4}O{sub 3-{delta}}/Ce{sub 0.9}Gd{sub 0.1}O{sub 2-{delta}}) membranes have been evaluated for structural properties such as hardness, fracture toughness and flexural strength. The effect of high temperature and slightly reducing atmosphere on the structural properties of the membranes was studied. The flexural strength of the membrane decreases upon exposure to slightly reducing conditions at 1000 C. The as-received and post-fractured membranes were characterized using XRD, SEM and TG-DTA to understand the fracture mechanisms. Changes in structural properties of the composite were sought to be correlated with the physiochemical features of the two-phases. We have reviewed the electrical conductivity data and stoichiometry data for La{sub 0.2}Sr{sub 0.8}Cr{sub 0.2}Fe{sub 0.8}O{sub 3-{delta}} some of which was reported previously. Electrical conductivity data for La{sub 0.2}Sr{sub 0.8}Cr{sub 0.2}Fe{sub 0.8}O{sub 3-{delta}} (LSCrF) were obtained in the temperature range, 752 {approx} 1055 C and in the pO{sub 2} range, 10{sup -18} {approx} 0.5 atm. The slope of the plot of log {sigma} vs. log pO{sub 2} is {approx} 1/5 in the p-type region, pO{sub 2} = 10{sup -5} {approx} 10{sup -1} atm. The pO{sub 2} at which the p-n transition is observed increases with increasing temperature. The activation energy for ionic conduction was estimated to be 0.86 eV from an Arrhenius plot of the minimum conductivity vs. reciprocal temperature. At temperatures below 940 C, a plateau in the conductivity isotherm suggests the presence of a two-phase region. Most likely, phase separation occurs to form a mixture of a perovskite phase and an oxygen vacancy ordered phase related to brownmillerite. Additional data for the oxygen non stoichiometry are presented.

S. Bandopadhyay; T. Nithyanantham

2006-12-31T23:59:59.000Z

185

Oxidation of carbon monoxide and hydrocarbons on platinum and palladium catalysts in the presence of sulfur dioxide  

SciTech Connect (OSTI)

The authors report on a study of the effect of sulfur dioxide on the activity of platinum and palladium catalysts with respect to oxidation of the principal toxic components in the exhaust gases of internal combustion engines: carbon monoxide and hydrocarbons (propylene (C/sub 3/H/sub 6/) and propane (C/sub 3/H/sub 8/)). The experiments were carried out in a flow system equipped with Beckman infrared analyzers to monitor the concentrations of CO and hydrocarbons and of sulfur dioxide. A series of thermal desorption experiments was carried out in a low-pressure flow system with mass spectrometric analysis of the gas phase. The results indicate that the low-temperature adsorption of sulfur dioxide on platinum (and also palladium) catalysts inhibits the oxidation of carbon monoxide and propylene. The poisoning effect of O/sub 2/ is due to blockage of the platinum centers for adsorption of the oxidizable compounds and oxygen.

Panchishnyi, V.I.; Bondareva, N.K.; Sklyarov, A.V.; Rozanov, V.V.; Chadina, G.P.

1988-11-10T23:59:59.000Z

186

Catalytic Upgrading of Sugars to Hydrocarbons Technology Pathway  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fractionation Hydrogen Acid, Caustic, Enzymes Wastewater Treatment Insoluble solids Biogas + Sludge Process Heat and Power Integration Corn Stover Hydrocarbon Biofuels (i.e....

187

Biological Conversion of Sugars to Hydrocarbons Technology Pathway...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with...

188

CSIA of Petroleum Hydrocarbons: Forensic Fingerprinting and Oil Spill Characterisation.  

E-Print Network [OSTI]

??This thesis has identified a suite of hydrocarbon diagnostic indices to be applied in the forensic fingerprinting of diesel oil characterisation and source identification using (more)

Muhammad, Syahidah Akmal binti

2012-01-01T23:59:59.000Z

189

The mobility of petroleum hydrocarbons in Athabasca oil sands tailings.  

E-Print Network [OSTI]

??Several oil sands tailings from Suncor Energy Inc. were analysed with respect to the mobility and solubility of the petroleum hydrocarbon (PHC) contaminants. At sites (more)

Brickner, Heather

2014-01-01T23:59:59.000Z

190

Carbonaceous adsorbent regeneration and halocarbon displacement by hydrocarbon gases  

DOE Patents [OSTI]

This invention describes a process for regeneration of halocarbon bearing carbonaceous adsorbents through which a carbonaceous adsorbent is contacted with hydrocarbon gases, preferably propane, butane and pentane at near room temperatures and at atmospheric pressure. As the hydrocarbon gases come in contact with the adsorbent, the hydrocarbons displace the halocarbons by physical adsorption. As a result of using this process, the halocarbon concentration and the hydrocarbon eluant is increased thereby allowing for an easier recovery of pure halocarbons. By using the process of this invention, carbonaceous adsorbents can be regenerated by an inexpensive process which also allows for subsequent re-use of the recovered halocarbons. 8 figures.

Senum, G.I.; Dietz, R.N.

1994-04-05T23:59:59.000Z

191

Carbonaceous adsorbent regeneration and halocarbon displacement by hydrocarbon gases  

DOE Patents [OSTI]

This invention describes a process for regeneration of halocarbon bearing carbonaceous adsorbents through which a carbonaceous adsorbent is contacted with hydrocarbon gases, preferably propane, butane and pentane at near room temperatures and at atmospheric pressure. As the hydrocarbon gases come in contact with the adsorbent, the hydrocarbons displace the halocarbons by physical adsorption. As a result of using this process, the halocarbon concentration and the hydrocarbon eluant is increased thereby allowing for an easier recovery of pure halocarbons. By using the process of this invention, carbonaceous adsorbents can be regenerated by an inexpensive process which also allows for subsequent re-use of the recovered halocarbons.

Senum, Gunnar I. (Patchogue, NY); Dietz, Russell N. (Patchogue, NY)

1994-01-01T23:59:59.000Z

192

Selective aerobic oxidation of hydrocarbons over supported gold catalysts.  

E-Print Network [OSTI]

??The selective oxidation of hydrocarbons is of vital importance for the production of valuable chemicals from crude oil and natural gas resources. Unfortunately, when using (more)

Hereijgers, B.P.C.

2011-01-01T23:59:59.000Z

193

Catalytic Upgrading of Sugars to Hydrocarbons Technology Pathway...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

the catalytic conversion of solubilized carbohydrate streams to hydrocarbon biofuels, utilizing data from recent efforts within the National Advanced Biofuels Consortium...

194

Mechanisms of Hydrocarbon Poisoning of A Urea SCR Catalyst  

Broader source: Energy.gov [DOE]

Understanding what reactions and which catalytic functions are affected by hydrocarbons can lead to improved tolerances for selective catalytic reduction performance

195

Electrical dispersion of water drops suspended in hydrocarbons  

Science Journals Connector (OSTI)

The effects of alternating (50 Hz) and direct current fields on drops of distilled water in a nonpolar hydrocarbon medium were examined.

G. M. Panchenkov; V. V. Papko; V. Ya. Baranov

1968-10-01T23:59:59.000Z

196

Systems and methods for producing hydrocarbons from tar sands formations  

DOE Patents [OSTI]

A system for treating a tar sands formation is disclosed. A plurality of heaters are located in the formation. The heaters include at least partially horizontal heating sections at least partially in a hydrocarbon layer of the formation. The heating sections are at least partially arranged in a pattern in the hydrocarbon layer. The heaters are configured to provide heat to the hydrocarbon layer. The provided heat creates a plurality of drainage paths for mobilized fluids. At least two of the drainage paths converge. A production well is located to collect and produce mobilized fluids from at least one of the converged drainage paths in the hydrocarbon layer.

Li, Ruijian (Katy, TX); Karanikas, John Michael (Houston, TX)

2009-07-21T23:59:59.000Z

197

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

Broader source: Energy.gov (indexed) [DOE]

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster Location P-19 Gregory K. Lilik, Andr L. Boehman Department of Energy & Mineral Engineering EMS Energy...

198

Stabilization of Platinum Nanoparticle Electrocatalysts for Oxygen...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Using Poly(diallyldimethylammonium chloride). Stabilization of Platinum Nanoparticle Electrocatalysts for Oxygen...

199

Water treatment facilities (excluding wastewater facilities). (Latest citations from the Selected Water Resources Abstracts database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning the design, construction, costs, and operation of water treatment facilities. Facilities covered include those that provide drinking water, domestic water, and water for industrial use. Types of water treatment covered include reverse osmosis, chlorination, filtration, and ozonization. Waste water treatment facilities are excluded from this bibliography. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-07-01T23:59:59.000Z

200

Composite oxygen transport membrane  

DOE Patents [OSTI]

A method of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln.sub.1-xA.sub.x).sub.wCr.sub.1-yB.sub.yO.sub.3-.delta. and a doped zirconia. In the porous fuel oxidation layer and the optional porous surface exchange layer, A is Calcium and in the dense separation layer A is not Calcium and, preferably is Strontium. Preferred materials are (La.sub.0.8Ca.sub.0.2).sub.0.95Cr.sub.0.5Mn.sub.0.5O.sub.3-.delta. for the porous fuel oxidation and optional porous surface exchange layers and (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.5Fe.sub.0.5O.sub.3-.delta. for the dense separation layer. The use of such materials allows the membrane to sintered in air and without the use of pore formers to reduce membrane manufacturing costs. The use of materials, as described herein, for forming the porous layers have application for forming any type of porous structure, such as a catalyst support.

Christie, Gervase Maxwell; Lane, Jonathan A.

2014-08-05T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

This is the third quarterly report on oxygen Transport Ceramic Membranes. In the following, the report describes the progress made by our university partners in Tasks 1 through 6, experimental apparatus that was designed and built for various tasks of this project, thermodynamic calculations, where applicable and work planned for the future. (Task 1) Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. (Task 2) Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. (Task 3) Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. (Task 4) Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. (Task 5) Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. (Task 6) Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2000-10-01T23:59:59.000Z

202

OXYGEN ABUNDANCES IN CEPHEIDS  

SciTech Connect (OSTI)

Oxygen abundances in later-type stars, and intermediate-mass stars in particular, are usually determined from the [O I] line at 630.0 nm, and to a lesser extent, from the O I triplet at 615.7 nm. The near-IR triplets at 777.4 nm and 844.6 nm are strong in these stars and generally do not suffer from severe blending with other species. However, these latter two triplets suffer from strong non-local thermodynamic equilibrium (NLTE) effects and thus see limited use in abundance analyses. In this paper, we derive oxygen abundances in a large sample of Cepheids using the near-IR triplets from an NLTE analysis, and compare those abundances to values derived from a local thermodynamic equilibrium (LTE) analysis of the [O I] 630.0 nm line and the O I 615.7 nm triplet as well as LTE abundances for the 777.4 nm triplet. All of these lines suffer from line strength problems making them sensitive to either measurement complications (weak lines) or to line saturation difficulties (strong lines). Upon this realization, the LTE results for the [O I] lines and the O I 615.7 nm triplet are in adequate agreement with the abundance from the NLTE analysis of the near-IR triplets.

Luck, R. E.; Andrievsky, S. M. [Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7215 (United States); Korotin, S. N.; Kovtyukh, V. V., E-mail: luck@fafnir.astr.cwru.edu, E-mail: serkor@skyline.od.ua, E-mail: val@deneb1.odessa.ua, E-mail: scan@deneb1.odessa.ua [Department of Astronomy and Astronomical Observatory, Odessa National University, Isaac Newton Institute of Chile, Odessa Branch, Shevchenko Park, 65014 Odessa (Ukraine)

2013-07-01T23:59:59.000Z

203

Optimizing hydrocarbon recoveries in nitrogen rejection units  

SciTech Connect (OSTI)

In order to address conceptual questions such as process selection and natural gas liquids plant integration, an understanding of the effects of several additional factors on nitrogen rejection unit design is important. These factors, which may influence optimum hydrocarbon recovery, installed compression, etc., include current and forecast values for natural gas and utilities, project life, plant size, feed gas composition and product specifications, feed pressure, and process variations. Prices, project life, and plant size are analyzed in detail and presented in terms of methane recoveries as a function of nitrogen content in the feed for both double and single column processes. Trends are qualitatively discussed for the remaining factors. 13 references.

Chesney, J.D.; Davis, R.A.; Hilton, M.F.; Vines, H.L.

1983-01-01T23:59:59.000Z

204

Preliminary Geospatial Analysis of Arctic Ocean Hydrocarbon Resources  

SciTech Connect (OSTI)

Ice coverage of the Arctic Ocean is predicted to become thinner and to cover less area with time. The combination of more ice-free waters for exploration and navigation, along with increasing demand for hydrocarbons and improvements in technologies for the discovery and exploitation of new hydrocarbon resources have focused attention on the hydrocarbon potential of the Arctic Basin and its margins. The purpose of this document is to 1) summarize results of a review of published hydrocarbon resources in the Arctic, including both conventional oil and gas and methane hydrates and 2) develop a set of digital maps of the hydrocarbon potential of the Arctic Ocean. These maps can be combined with predictions of ice-free areas to enable estimates of the likely regions and sequence of hydrocarbon production development in the Arctic. In this report, conventional oil and gas resources are explicitly linked with potential gas hydrate resources. This has not been attempted previously and is particularly powerful as the likelihood of gas production from marine gas hydrates increases. Available or planned infrastructure, such as pipelines, combined with the geospatial distribution of hydrocarbons is a very strong determinant of the temporal-spatial development of Arctic hydrocarbon resources. Significant unknowns decrease the certainty of predictions for development of hydrocarbon resources. These include: 1) Areas in the Russian Arctic that are poorly mapped, 2) Disputed ownership: primarily the Lomonosov Ridge, 3) Lack of detailed information on gas hydrate distribution, and 4) Technical risk associated with the ability to extract methane gas from gas hydrates. Logistics may control areas of exploration more than hydrocarbon potential. Accessibility, established ownership, and leasing of exploration blocks may trump quality of source rock, reservoir, and size of target. With this in mind, the main areas that are likely to be explored first are the Bering Strait and Chukchi Sea, in spite of the fact that these areas do not have highest potential for future hydrocarbon reserves. Opportunities for improving the mapping and assessment of Arctic hydrocarbon resources include: 1) Refining hydrocarbon potential on a basin-by-basin basis, 2) Developing more realistic and detailed distribution of gas hydrate, and 3) Assessing the likely future scenarios for development of infrastructure and their interaction with hydrocarbon potential. It would also be useful to develop a more sophisticated approach to merging conventional and gas hydrate resource potential that considers the technical uncertainty associated with exploitation of gas hydrate resources. Taken together, additional work in these areas could significantly improve our understanding of the exploitation of Arctic hydrocarbons as ice-free areas increase in the future.

Long, Philip E.; Wurstner, Signe K.; Sullivan, E. C.; Schaef, Herbert T.; Bradley, Donald J.

2008-10-01T23:59:59.000Z

205

Mutagenicity of Soot and Associated Polycyclic Aromatic Hydrocarbons to Salmonella typhimurium  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbons were quantitatively...polycyclic aromatic hydrocarbon constituent in a kerosene...polycyclic aromatic hydrocarbon fraction in terms of...formed by the incomplete combustion of organic material...and sediments (1), heat and power generation...

Debra A. Kaden; Ronald A. Hites; and William G. Thilly

1979-10-01T23:59:59.000Z

206

E-Print Network 3.0 - aromatic hydrocarbon investigation Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on ... Source: Kim, Ji Man - Department...

207

E-Print Network 3.0 - aromatic hydrocarbons investigated Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on ... Source: Kim, Ji Man - Department...

208

E-Print Network 3.0 - aromatic hydrocarbon components Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on ... Source: Kim, Ji Man - Department...

209

E-Print Network 3.0 - aromatic hydrocarbon molecules Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on monolithic ... Source: Kim, Ji Man -...

210

E-Print Network 3.0 - aromatic hydrocarbons molecules Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on monolithic ... Source: Kim, Ji Man -...

211

E-Print Network 3.0 - aromatic hydrocarbons resulting Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... and conversion of various hydrocarbons on monolithic ... Source: Kim, Ji Man -...

212

The Fate of Fossil Fuel Hydrocarbons in Marine Animals [and Discussion  

Science Journals Connector (OSTI)

...research-article The Fate of Fossil Fuel Hydrocarbons in Marine Animals [and Discussion...mammals. The fate of fossil fuel hydrocarbons in marine animals. | Journal Article...Carcinogens 0 Epoxy Compounds 0 Fuel Oils 0 Hydrocarbons 0 Naphthalenes...

1975-01-01T23:59:59.000Z

213

Ozonation of Mutagenic and Carcinogenic Polyaromatic Amines and Polyaromatic Hydrocarbons in Water  

Science Journals Connector (OSTI)

...Amines and Polyaromatic Hydrocarbons in Water 1 1 Supported by a grant...amines and polyaromatic hydrocarbons in water. | The Salmonella-microsome...g., 13 halogenated hydrocarbons were identified in the drinking water of New Orleans (13...

Gary R. Burleson; Michael J. Caulfield; and Morris Pollard

1979-06-01T23:59:59.000Z

214

Determination of hydrocarbons in water interlaboratory method validation before routine monitoring  

Science Journals Connector (OSTI)

The clarification of hydrocarbon input into the Baltic sea via rivers ... of a new method for the determination of hydrocarbons by solvent extraction and gas chromatography. Surrogate oil solutions with known hydrocarbon

P. Woitke; Reinhard Krener; Peter Lepom

2001-04-01T23:59:59.000Z

215

Process for using preferential physical solvents for selective processing of hydrocarbon gas streams  

SciTech Connect (OSTI)

This patent describes a process for the removal of hydrocarbon gas liquids, comprising hydrocarbons heavier than methane, from a hydrocarbon gas stream, wherein a need exists for recovering to any selected degree and at extremely high recoveries a selected hydrocarbon component and heavier hydrocarbons. The hydrocarbons are within the group consisting of ethane, propane, butane, and pentane without the need simultaneously to recover hydrocarbons lighter than the selected hydrocarbon component from the hydrocarbon gas stream, The improvement of selectively extracting the hydrocarbon gas liquids from the hydrocarbon gas stream with a preferential physical solvent is described here. The method provides selective capability for recovery according to the selected degree of (a) ethane in amounts ranging from 2-98%, (b) propane in amounts ranging from 2-99%, (c) butane in amounts ranging from 2-100%, or (d) pentanes and higher molecular weight hydrocarbons in amounts ranging up to 100%.

Mehra, Y.R.

1986-10-14T23:59:59.000Z

216

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C. It was found that space group of R3c yielded a better refinement than a cubic structure of Pm3m. Oxygen occupancy was nearly 3 in the region from room temperature to 700 C, above which the occupancy decreased due to oxygen loss. Dense OTM bars provided by Praxair were loaded to fracture at varying stress rates. Studies were done at room temperature in air and at 1000 C in a specified environment to evaluate slow crack growth behavior. The X-Ray data and fracture mechanisms points to non-equilibrium decomposition of the LSFCO OTM membrane. The non-equilibrium conditions could probably be due to the nature of the applied stress field (stressing rates) and leads to transition in crystal structures and increased kinetics of decomposition. The formations of a Brownmillerite or Sr2Fe2O5 type structures, which are orthorhombic are attributed to the ordering of oxygen vacancies. The cubic to orthorhombic transitions leads to 2.6% increase in strains and thus residual stresses generated could influence the fracture behavior of the OTM membrane. Continued investigations on the thermodynamic properties (stability and phase-separation behavior) and total conductivity of prototype membrane materials were carried out. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previously characterization, stoichiometry and conductivity measurements for samples of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were reported. In this report, measurements of the chemical and thermal expansion as a function of temperature and p{sub O2} are described.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

217

BWR oxygen control demonstration program  

SciTech Connect (OSTI)

A number of cracks have occurred recently in certain BWR piping systems. The operating environment associated with oxidizing species such as oxygen and hydrogen peroxide is considered one of the factors in the mechanism of cracking. In April 1976, NWT Corporation was contracted to perform a BWR oxygen control demonstration program. Means for reducing reactor water oxygen and hydrogen peroxide concentrations during startup and shutdown transients were defined and demonstrated at Vermont Yankee and Browns Ferry Unit 3. Results of the demonstrations and an analytical review of impacts of major system variables on oxygen transients are discussed herein.

Pearl, W.L.; Kassen, W.R.; Sawochka, S.G.

1981-05-01T23:59:59.000Z

218

Transition metal ion-assisted photochemical generation of alkyl halides and hydrocarbons from carboxylic acids  

SciTech Connect (OSTI)

Near-UV photolysis of aqueous solutions of propionic acid and aqueous Fe3+ in the absence of oxygen generates a mixture of hydrocarbons (ethane, ethylene and butane), carbon dioxide, and Fe2+. The reaction becomes mildly catalytic (about five turnovers) in the presence of oxygen which converts a portion of alkyl radicals to oxidizing intermediates that reoxidize Fe2+. The photochemistry in the presence of halide ions (X? = Cl?, Br?) generates ethyl halides via halogen atom abstraction from FeXn3?n by ethyl radicals. Near-quantitative yields of C2H5X are obtained at ?0.05 M X?. Competition experiments with Co(NH3)5Br2+ provided kinetic data for the reaction of ethyl radicals with FeCl2+ (k = (4.0 0.5) 106 M?1 s?1) and with FeBr2+ (k = (3.0 0.5) 107 M?1 s?1). Photochemical decarboxylation of propionic acid in the presence of Cu2+ generates ethylene and Cu+. Longer-chain acids also yield alpha olefins as exclusive products. These reactions become catalytic under constant purge with oxygen which plays a dual role. It reoxidizes Cu+ to Cu2+, and removes gaseous olefins to prevent accumulation of Cu+(olefin) complexes and depletion of Cu2+. The results underscore the profound effect that the choice of metal ions, the medium, and reaction conditions exert on the photochemistry of carboxylic acids.

Carraher, Jack; Pestovsky, Oleg; Bakac, Andreja

2012-03-14T23:59:59.000Z

219

Method and apparatus for converting hydrocarbon fuel into hydrogen gas and carbon dioxide  

DOE Patents [OSTI]

An apparatus and a method are disclosed for converting hydrocarbon fuel or an alcohol into hydrogen gas and carbon dioxide. The apparatus includes a first vessel having a partial oxidation reaction zone and a separate steam reforming reaction zone that is distinct from the partial oxidation reaction zone. The first vessel has a first vessel inlet at the partial oxidation reaction zone and a first vessel outlet at the steam reforming zone. The reformer also includes a helical tube extending about the first vessel. The helical tube has a first end connected to an oxygen-containing source and a second end connected to the first vessel at the partial oxidation reaction zone. Oxygen gas from an oxygen-containing source can be directed through the helical tube to the first vessel. A second vessel having a second vessel inlet and second vessel outlet is annularly disposed about the first vessel. The helical tube is disposed between the first vessel and the second vessel and gases from the first vessel can be directed through second vessel.

Clawson, Lawrence G. (Dover, MA); Mitchell, William L. (Belmont, MA); Bentley, Jeffrey M. (Westford, MA); Thijssen, Johannes H.J. (Cambridge, MA)

2000-01-01T23:59:59.000Z

220

Oxygen to the core  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1-01 1-01 For immediate release: 01/10/2013 | NR-13-01-01 Oxygen to the core Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Printer-friendly An artist's conception of Earth's inner and outer core. LIVERMORE, Calif. -- An international collaboration including researchers from Lawrence Livermore National Laboratory has discovered that the Earth's core formed under more oxidizing conditions than previously proposed. Through a series of laser-heated diamond anvil cell experiments at high pressure (350,000 to 700,000 atmospheres of pressure) and temperatures (5,120 to 7,460 degrees Fahrenheit), the team demonstrated that the depletion of siderophile (also known as "iron loving") elements can be produced by core formation under more oxidizing conditions than earlier

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

This report covers the following tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints; Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability; Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres; Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures; Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability; and Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-04-01T23:59:59.000Z

222

Pool octanes via oxygenates  

SciTech Connect (OSTI)

Increasingly stringent antipollution regulations placed on automobile exhaust gases with consequent reduction or complete lead ban from motor gasoline result in octane shortage at many manufacturing sites. Attractive solutions to this problem, especially in conjunction with abundant methanol supplies, are the hydration and etherification of olefins contained in light product streams from cracking unit or produced by field gas dehydrogenation. A comparison is made between oxygenates octane-volume pool contributions and established refinery technologies. Process reviews for bulk manufacture of fuel-grade isopropanol (IPA), secondary butanol (SBA), tertiary butanol (TBA), methyl tertiary butyl ether (MTBE) and tertiary amyl methyl ether (TAME) are presented together with the characteristic investment and operating data. The implantation of these processes into a typical FCCU refinery complex with the resulting octane-pool improvement possibilities is descried.

Prezelj, M.

1987-09-01T23:59:59.000Z

223

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

Conversion of natural gas to liquid fuels and chemicals is a major goal for the Nation as it enters the 21st Century. Technically robust and economically viable processes are needed to capture the value of the vast reserves of natural gas on Alaska's North Slope, and wean the Nation from dependence on foreign petroleum sources. Technologies that are emerging to fulfill this need are all based syngas as an intermediate. Syngas (a mixture of hydrogen and carbon monoxide) is a fundamental building block from which chemicals and fuels can be derived. Lower cost syngas translates directly into more cost-competitive fuels and chemicals. The currently practiced commercial technology for making syngas is either steam methane reforming (SMR) or a two-step process involving cryogenic oxygen separation followed by natural gas partial oxidation (POX). These high-energy, capital-intensive processes do not always produce syngas at a cost that makes its derivatives competitive with current petroleum-based fuels and chemicals. This project has the following 6 main tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2001-12-01T23:59:59.000Z

224

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

Broader source: Energy.gov [DOE]

This technology pathway case investigates the cultivation of algal biomass followed by further lipid extraction and upgrading to hydrocarbon biofuels. Technical barriers and key research needs have been assessed in order for the algal lipid extraction and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

225

Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants  

E-Print Network [OSTI]

1 Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants Paul BYRNE and to install heat pumps in unoccupied spaces. Nevertheless manufacturers keep working on components for hydrocarbons. In the frame of a research project on heat pumps for simultaneous heating and cooling, an R407C

Paris-Sud XI, Université de

226

Contemplation on the heats of combustion of isomeric hydrocarbons  

Science Journals Connector (OSTI)

Within the Hckel molecular orbital theory, the heats of combustion of isomeric hydrocarbons are related to some topological factors. The standard heats of combustion values of alternant hydrocarbons, expressed as kcal/g, seem to be related to a4 coefficient of their secular polynomials.

Lemi Trker

2004-01-01T23:59:59.000Z

227

Formation mechanism for polycyclic aromatic hydrocarbons in methane flames  

E-Print Network [OSTI]

aromatic hydrocarbons PAHs up to 788 amu (C64H20) were detected in the combustion gases. Only the most applications including heating systems and gas turbines for electric power generation.62­64 The combustionFormation mechanism for polycyclic aromatic hydrocarbons in methane flames K. Siegmanna) Swiss

Sattler, Klaus

228

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

SciTech Connect (OSTI)

This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

Davis, R.; Biddy, M.; Tan, E.; Tao, L.; Jones, S.

2013-03-01T23:59:59.000Z

229

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

Broader source: Energy.gov [DOE]

This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

230

High levels of carcinogenic polycyclic aromatic hydrocarbons in mate drinks  

Science Journals Connector (OSTI)

...carcinogenic polycyclic aromatic hydrocarbons in mate drinks Farin Kamangar...exposure to polycyclic aromatic hydrocarbons (PAHs), including known...80 oC) or cold (4 oC) water and two commonly used brands...Infusions were made by adding water to the leaves, steeping for...

Farin Kamangar; Michele Schantz; Christian Abnet; Renato Fagundes; and Sanford Dawsey

2008-05-01T23:59:59.000Z

231

Total Synthesis of Convex Polyhedral Hydrocarbons The Platonic Solids  

E-Print Network [OSTI]

O H H Total Synthesis of Convex Polyhedral Hydrocarbons The Platonic Solids O O t-BuO3C Br O O Br Br Ph PhPh Ph PhPh Ph Ph COOH HOOC Total Synthesis of Convex Polyhedral Hydrocarbons The Five Matter Icosahedron Water · Polyhedron: a closed surface made up of polygonal regions. · Regular

Stoltz, Brian M.

232

Microbial Degradation in Soil Microcosms of Fuel Oil Hydrocarbons from Drilling Cuttings  

Science Journals Connector (OSTI)

Microbial Degradation in Soil Microcosms of Fuel Oil Hydrocarbons from Drilling Cuttings ... Relation between Bioavailability and Fuel Oil Hydrocarbon Composition in Contaminated Soils ...

Claude-Henri. ChaIneau; Jean-Louis. Morel; Jean. Oudot

1995-06-01T23:59:59.000Z

233

E-Print Network 3.0 - aromatic hydrocarbons affect Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences and Ecology 3 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: -fueled automobiles, most cyclic hydrocarbons are...

234

E-Print Network 3.0 - aromatic hydrocarbons annual Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Page: << < 1 2 3 4 5 > >> 1 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: releases about 5 billion kilograms of hydrocarbons...

235

E-Print Network 3.0 - aromatic hydrocarbons implications Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Page: << < 1 2 3 4 5 > >> 1 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: -fueled automobiles, most cyclic hydrocarbons are...

236

E-Print Network 3.0 - aromatic hydrocarbon exposure Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aust. J. Mar. Freshw. Res., 1984, 35, 119-28 Aromatic Hydrocarbons in Waters of Port Phillip Bay... of aromatic hydrocarbons in coastal waters, using solvent extraction and...

237

E-Print Network 3.0 - aromatic hydrocarbon contamination Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: called aromatic hydrocarbons. These include harmful pollutants like dioxins, PCBs and a group called... polycyclic aromatic hydrocarbons (PAHs). PAHs are...

238

E-Print Network 3.0 - aromatic hydrocarbon receptor Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aromatic hydrocarbons... the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

239

E-Print Network 3.0 - aromatic hydrocarbons extracted Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Toxic Contamination Summary: called aromatic hydrocarbons. These include harmful pollutants like dioxins, PCBs and a group called... polycyclic aromatic hydrocarbons (PAHs)....

240

E-Print Network 3.0 - aromatic hydrocarbon metabolism Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

hydrocarbon is introduced into the ocean via oil spillage, offshore drilling leaks, industrial... hydrocarbons have been attributed to inhibition of ... Source: National...

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

E-Print Network 3.0 - aromatic hydrocarbon-degrading bacteria...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ydrocarbonDegradation It was hypothesized... aromatic hydrocarbon degradation. Hypothesis Test Result Groundwater stimulates Fe(lll) reduction Cell... Hydrocarbon Degradation At...

242

Chlorinated C$_{1}$ and C$_{2}$ Hydrocarbons in the Marine Environment [and Discussion  

Science Journals Connector (OSTI)

...the marine environment. | Journal Article | 0 Hydrocarbons, Chlorinated | Air Pollution analysis Animals Fresh Water Great Britain Hydrocarbons, Chlorinated analysis metabolism Seawater Water Pollution, Chemical analysis The Royal Society...

1975-01-01T23:59:59.000Z

243

A generalized viscosity equation for pure heavy hydrocarbons  

SciTech Connect (OSTI)

This paper presents a method for the correlation and prediction of the viscosity of pure heavy hydrocarbons listed in API Research Project 42. The 273 heavy hydrocarbons in the database include branched/unbranched paraffins and olefins together with a variety of complex nonfused/fused aromatic and naphthenic compounds. A generalized one-parameter viscosity-temperature equation, log ({mu} + 0.8) = 100(0.01T){sup b}, is proposed (overall AAD {lt} 7-10%) for all heavy hydrocarbons in the database. For each hydrocarbon, an optimum value of parameter b is provided. It is shown that parameter b varies linearly with the logarithm of molar mass as well as the inverse of boiling temperature (at 10 mmHg). This important observation leads to the development of a predictive method for the liquid-phase viscosity of pure heavy hydrocarbons.

Mehrotra, A.K. (Dept. of Chemical and Petroleum Engineering, Univ. of Calgary, Calgary, Alberta T2N 1N4 (CA))

1991-02-01T23:59:59.000Z

244

Bioremediation of soil contaminated with hydrocarbons and heavy metals  

SciTech Connect (OSTI)

This investigation showed that a soil contaminated with petroleum hydrocarbons and heavy metals had sufficient indigenous microbial activity for hydrocarbon biodegradation under nonlimiting conditions. Nutrient supplementation with nitrogen and phosphate, together with aeration, seemed to be the most important factors for enhancing biodegradation. Hydrocarbon biodegradation occurred to a much greater extent under aerobic than under anaerobic conditions. Biodegradation did, however, induce low pH conditions and thus caused high heavy-metal concentrations in the leachate. Anaerobic conditions inhibited hydrocarbon biodegradation with no subsequent drop in pH and low heavy-metal concentrations in the leachate. Thus, anaerobic conditions were shown to facilitate less metal mobility than low pH conditions. Air sparging did not cause a significant increase in biodegradation. Adsorption of heavy-fraction hydrocarbons (> C{sub 20}) to microorganisms and colloidal material in the leachate was suspected of facilitating mobility of these fractions and thus their subsequent detection in the leachate.

Plessis, C.A. du; Phaal, C.B.; Senior, E. [Univ. of Natal, Scottsville (South Africa)

1995-12-31T23:59:59.000Z

245

Cogeneration systems and processes for treating hydrocarbon containing formations  

DOE Patents [OSTI]

A system for treating a hydrocarbon containing formation includes a steam and electricity cogeneration facility. At least one injection well is located in a first portion of the formation. The injection well provides steam from the steam and electricity cogeneration facility to the first portion of the formation. At least one production well is located in the first portion of the formation. The production well in the first portion produces first hydrocarbons. At least one electrical heater is located in a second portion of the formation. At least one of the electrical heaters is powered by electricity from the steam and electricity cogeneration facility. At least one production well is located in the second portion of the formation. The production well in the second portion produces second hydrocarbons. The steam and electricity cogeneration facility uses the first hydrocarbons and/or the second hydrocarbons to generate electricity.

Vinegar, Harold J. (Bellaire, TX); Fowler, Thomas David (Houston, TX); Karanikas, John Michael (Houston, TX)

2009-12-29T23:59:59.000Z

246

Heating hydrocarbon containing formations in a line drive staged process  

DOE Patents [OSTI]

Method for treating a hydrocarbon containing formation are described herein. Methods may include providing heat to a first section of the formation with one or more first heaters in the first section. First hydrocarbons may be heated in the first section such that at least some of the first hydrocarbons are mobilized. At least some of the mobilized first hydrocarbons may be produced through a production well located in a second section of the formation. The second section may be located substantially adjacent to the first section. A portion of the second section may be provided some heat from the mobilized first hydrocarbons, but is not conductively heated by heat from the first heaters. Heat may be provided to the second section with one or more second heaters in the second section to further heat the second section.

Miller, David Scott (Katy, TX)

2009-07-21T23:59:59.000Z

247

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, Moessbauer spectroscopy was used to study the local environmentals of LSFT with various level of oxygen deficiency. Ionic valence state, magnetic interaction and influence of Ti on superexchange are discussed Stable crack growth studies on Dense OTM bars provided by Praxair were done at elevated temperature, pressure and elevated conditions. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. The initial measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} are reported. Neutron diffraction measurements of the same composition are in agreement with both the stoichiometry and the kinetic behavior observed in coulometric titration measurements. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The COCO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-10-01T23:59:59.000Z

248

MTBE, Oxygenates, and Motor Gasoline  

Gasoline and Diesel Fuel Update (EIA)

MTBE, Oxygenates, and MTBE, Oxygenates, and Motor Gasoline Contents * Introduction * Federal gasoline product quality regulations * What are oxygenates? * Who gets gasoline with oxygenates? * Which areas get MTBE? * How much has been invested in MTBE production capacity? * What does new Ethanol capacity cost? * What would an MTBE ban cost? * On-line information resources * Endnotes * Summary of revisions to this analysis Introduction The blending of methyl tertiary butyl ether (MTBE) into motor gasoline has increased dramatically since it was first produced 20 years ago. MTBE usage grew in the early 1980's in response to octane demand resulting initially from the phaseout of lead from gasoline and later from rising demand for premium gasoline. The oxygenated gasoline program stimulated an

249

Plants and Night Oxygen Production  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Plants and Night Oxygen Production Plants and Night Oxygen Production Name: Ashar Status: other Grade: other Location: Outside U.S. Country: India Date: Winter 2011-2012 Question: I would like to know if there are any plants which produces oxygen at night (without photosynthesis). I was told by a friend that Holy Basil (Ocimum tenuiflorum) produces oxygen even at night and I'm not convinced. I would like to get confirmation from experts. Replies: Some plants (particularly those of dry regions, e.g., deserts) only open their stomates at night to avoid drying out to intake CO2 (and output O2) (CAM photosynthesis) http://en.wikipedia.org/wiki/Crassulacean_acid_metabolism Sincerely, Anthony R. Brach, PhD Missouri Botanical Garden Bringing oxygen producing plants into your home is a way to mimic the healthy lifestyle factors of longevity in humans from the longest lived cultures.

250

Oxygen detection using evanescent fields  

DOE Patents [OSTI]

An apparatus and method for the detection of oxygen using optical fiber based evanescent light absorption. Methylene blue was immobilized using a sol-gel process on a portion of the exterior surface of an optical fiber for which the cladding has been removed, thereby forming an optical oxygen sensor. When light is directed through the optical fiber, transmitted light intensity varies as a result of changes in the absorption of evanescent light by the methylene blue in response to the oxygen concentration to which the sensor is exposed. The sensor was found to have a linear response to oxygen concentration on a semi-logarithmic scale within the oxygen concentration range between 0.6% and 20.9%, a response time and a recovery time of about 3 s, ant to exhibit good reversibility and repeatability. An increase in temperature from 21.degree. C. to 35.degree. C. does not affect the net absorption of the sensor.

Duan, Yixiang (Los Alamos, NM); Cao, Weenqing (Los Alamos, NM)

2007-08-28T23:59:59.000Z

251

Process for steam reforming of hydrocarbons  

SciTech Connect (OSTI)

A process is provided for the steam reforming of normally liquid hydrocarbons to produce carbon monoxide and hydrogen, which does not promote the deposition of carbonacious materials upon catalytic surfaces. The catalyst consists of nickel promoted with the oxides of iron and manganese within a specific manganese to iron ratio, said metal and metal oxides being supported upon a refractory support. The support is preferably aluminum oxide in its alpha phase having a surface area of more than 0.5 m2/gm but no more than 10 m2/gm. The metallic constituents are impregnated onto said refractory low surface area support as salts and are calcined at sufficiently high temperature to convert the salts to the oxide but at a sufficiently low temperature that they do not chemically react with the support.

Broughton, D.R.; Russ, K.J.

1980-11-11T23:59:59.000Z

252

Method and apparatus for detecting halogenated hydrocarbons  

DOE Patents [OSTI]

A halogenated hydrocarbon (HHC) detector is formed from a silent discharge (also called a dielectric barrier discharge) plasma generator. A silent discharge plasma device receives a gas sample that may contain one or more HHCs and produces free radicals and excited electrons for oxidizing the HHCs in the gas sample to produce water, carbon dioxide, and an acid including halogens in the HHCs. A detector is used to sensitively detect the presence of the acid. A conductivity cell detector combines the oxidation products with a solvent where dissociation of the acid increases the conductivity of the solvent. The conductivity cell output signal is then functionally related to the presence of HHCs in the gas sample. Other detectors include electrochemical cells, infrared spectrometers, and negative ion mobility spectrometers.

Monagle, Matthew (Los Alamos, NM); Coogan, John J. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

253

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and initial studies on newer composition of Ti doped LSF. Dense OTM bars provided by Praxair were loaded to fracture at varying stress rates. Studies were done at room temperature in air and at 1000 C in a specified environment to evaluate slow crack growth behavior. In addition, studies were also begun to obtain reliable estimates of fracture toughness and stable crack growth in specific environments. Newer composition of Ti doped LSF membranes were characterized by neutron diffraction analysis. Quench studies indicated an apparent correlation between the unit cell volume and oxygen occupancy. The studies however, indicated an anomaly of increasing Fe/Ti ratio with change in heat treatment. Ti doped LSF was also characterized for stoichiometry as a function of temp and pO{sub 2}. The non stoichiometry parameter {delta} was observed to increase almost linearly on lowering pO{sub 2} until a ideal stoichiometric composition of {delta} = 0.175 was approached.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; W.B. Yelon; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-02-01T23:59:59.000Z

254

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

Conversion of natural gas to liquid fuels and chemicals is a major goal for the Nation as it enters the 21st Century. Technically robust and economically viable processes are needed to capture the value of the vast reserves of natural gas on Alaska's North Slope, and wean the Nation from dependence on foreign petroleum sources. Technologies that are emerging to fulfill this need are all based syngas as an intermediate. Syngas (a mixture of hydrogen and carbon monoxide) is a fundamental building block from which chemicals and fuels can be derived. Lower cost syngas translates directly into more cost-competitive fuels and chemicals. The currently practiced commercial technology for making syngas is either steam methane reforming (SMR) or a two-step process involving cryogenic oxygen separation followed by natural gas partial oxidation (POX). These high-energy, capital-intensive processes do not always produce syngas at a cost that makes its derivatives competitive with current petroleum-based fuels and chemicals.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-01-01T23:59:59.000Z

255

Low Oxygen Environments in Chesapeake Bay  

E-Print Network [OSTI]

Low Oxygen Environments in Chesapeake Bay Jeremy Testa Chesapeake Biological Laboratory University of Maryland Center for Environmental Science Why we care about low oxygen? What causes low oxygen? Where and When does Chesapeake Bay lose oxygen? #12;#12;Hypoxia and Chesapeake Animals Low dissolved oxygen

Boynton, Walter R.

256

Hydrocarbon concentrations at the Alpine mountain sites Jungfraujoch and Arosa  

Science Journals Connector (OSTI)

Volatile hydrocarbons have been measured for 1yr at Arosa (2010m asl) to determine the contribution of European emissions to the trace gas concentrations at this remote site. Results are compared to concurrent hydrocarbon concentrations at the high Alpine background site Jungfraujoch (3580m asl). Hydrocarbon concentrations at Arosa are generally much higher than at Jungfraujoch. The influence of the Alpine boundary layer air was studied based on the diurnal variation of hydrocarbon concentrations, i.e. rising pollutant concentrations in the morning at Arosa and in the afternoon at Jungfraujoch. Different hydrocarbon emission sources of the uplifting air were found at the two sites. At Jungfraujoch, several transatlantic events were detected from October 2001 to January 2002 based on analysis of hydrocarbon ratios and air parcel trajectories. The OH concentration during the transatlantic transport was estimated to be around 5105cm?3, derived from simultaneous hydrocarbon oxidation and dilution in the free troposphere. These transatlantic transport events were tracked back to warm conveyor belts, characterized by uniform dynamics and relatively uniform surface sources. In addition, ozone production in the free tropospheric transport was also documented in these events.

Yingshi Li; Mike Campana; Stefan Reimann; Daniel Schaub; Konrad Stemmler; Johannes Staehelin; Thomas Peter

2005-01-01T23:59:59.000Z

257

Application of electrochemical technology for removing petroleum hydrocarbons from produced water using lead dioxide and boron-doped diamond electrodes  

Science Journals Connector (OSTI)

Abstract Although diverse methods exist for treating polluted water, the most promising and innovating technology is the electrochemical remediation process. This paper presents the anodic oxidation of real produced water (PW), generated by the petroleum exploration of the Petrobras plant-Tunisia. Experiments were conducted at different current densities (30, 50 and 100mAcm?2) using the lead dioxide supported on tantalum (Ta/PbO2) and boron-doped diamond (BDD) anodes in an electrolytic batch cell. The electrolytic process was monitored by the chemical oxygen demand (COD) and the residual total petroleum hydrocarbon [TPH] in order to know the feasibility of electrochemical treatment. The characterization and quantification of petroleum wastewater components were performed by gas chromatography mass spectrometry. The COD removal was approximately 85% and 96% using PbO2 and BDD reached after 11 and 7h, respectively. Compared with PbO2, the BDD anode showed a better performance to remove petroleum hydrocarbons compounds from produced water. It provided a higher oxidation rate and it consumed lower energy. However, the energy consumption and process time make useless anodic oxidation for the complete elimination of pollutants from PW. Cytotoxicity has shown that electrochemical oxidation using BDD could be efficiently used to reduce more than 90% of hydrocarbons compounds. All results suggest that electrochemical oxidation could be an effective approach to treat highly concentrated organic pollutants present in the industrial petrochemical wastewater and significantly reduce the cost and time of treatment.

Boutheina Gargouri; Olfa Dridi Gargouri; Bochra Gargouri; Souhel Kallel Trabelsi; Ridha Abdelhedi; Mohamed Bouaziz

2014-01-01T23:59:59.000Z

258

Magnetism of solid oxygen  

Science Journals Connector (OSTI)

Magnetic susceptibilities of single-crystal ?-O2 and preferentially oriented polycrystalline samples of ?-O2 and ?-O2 have been measured, employing a mutual-inductance bridge method. The susceptibility of paramagnetic ?-O2 is isotropic and exhibits a temperature dependence which is not strictly Curie-Weiss, due to short-range correlations and partially hindered rotation. The susceptibility of ?-O2 exhibits very little anisotropy, but has an unusual temperature dependence which is probably due to the novel behavior of the lattice constants, modulation of inplane and out-of-plane exchange interactions, and short-range order. The susceptibility of anti-ferromagnetic ?-O2 is anisotropic, and data from five differently oriented samples have been analyzed in terms of principal antiferromagnetic susceptibilities. The data are consistent with the assumption that the easy axis is the twofold axis, b??, though the direction a?? cannot be excluded. A comprehensive analysis of the present susceptibility results and other magnetic, spectroscopic, and thermal measurements is made, with special reference to ?-O2. The perpendicular susceptibility implies an unreasonably large Nel temperature, 211 K, and a correspondingly large intersublattice exchange interaction, |J2|k=19.8 K. The effects of anisotropy and zeropoint spin deviations do not reduce this estimate by more than 15%. The temperature dependence of the parallel susceptibility suggests a much smaller value for the effective exchange interaction, |J|k=5.3 K, and appears to be well accounted for assuming a single spin-wave excitation. Antiferromagnetic resonance frequencies are analyzed and shown to yield, on assuming a dominant anisotropy equal to that of the free molecule, |J2|k=4.3 K. An approximate separation of lattice and magnetic heat capacities is effected, and a value |J|k=3.0 K deduced. The data appear to require the assumption of two spin-wave modes. Except for the perpendicular susceptibility, experimental results suggest a Nel temperature between 30 and 40 K. Meanfield and other theories lead to similar estimates, assuming that |J|k is between 3 and 4 K. The effect of the anisotropy on TN is minor, and no significant spin-shortening effect is predicted. Other experimental results are considered, and a disparate set of estimates for the exchange interaction and zone-boundary spin-wave energies is discussed. Including the effects of intrasublattice exchange interactions within the context of a two-sublattice model does not seem sufficient to remove the various discrepancies. An approximate calculation of relative overlap integrals and exchange interactions between different pairs of molecules in ?-O2 is made. It is suggested that a multisublattice model for the magnetic structure, and possibly one involving noncollinear sublattices, may provide an eventual resolution of the various difficulties. A "quasi-two-dimensional" description of ?-O2 is also considered, but appears not to offer a satisfactory explanation of the unusual and imperfectly correlated properties of this phase.

Gary C. DeFotis

1981-05-01T23:59:59.000Z

259

Frostbite Theater - Liquid Oxygen vs. Liquid Nitrogen - Liquid Oxygen and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cells vs. Liquid Nitrogen! Cells vs. Liquid Nitrogen! Previous Video (Cells vs. Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Paramagnetism) Paramagnetism Liquid Oxygen and Fire! What happens when nitrogen and oxygen are exposed to fire? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a test tube of liquid nitrogen! Steve: And this is a test tube of liquid oxygen! Joanna: Let's see what happens when nitrogen and oxygen are exposed to fire. Steve: Fire?! Joanna: Yeah! Steve: Really?! Joanna: Why not! Steve: Okay! Joanna: As nitrogen boils, it changes into nitrogen gas. Because it's so cold, it's denser than the air in the room. The test tube fills up with

260

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In the current research, the electrical conductivity and Seebeck coefficient were measured as a function of temperature in air. Based on these measurements, the charge carrier concentration, net acceptor dopant concentration, activation energy of conduction and mobility were estimated. The studies on the fracture toughness of the LSFT and dual phase membranes at room temperature have been completed and reported previously. The membranes that are exposed to high temperatures at an inert and a reactive atmosphere undergo many structural and chemical changes which affects the mechanical properties. To study the effect of temperature on the membranes when exposed to an inert environment, the membranes (LAFT and Dual phase) were heat treated at 1000 C in air and N{sub 2} atmosphere and hardness and fracture toughness of the membranes were studied after the treatment. The indentation method was used to find the fracture toughness and the effect of the heat treatment on the mechanical properties of the membranes. Further results on the investigation of the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appears to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. 2-D modeling of oxygen movement has been undertaken in order to fit isotope data. The model will serve to study ''frozen'' profiles in patterned or composite membranes.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/ Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Existing facilities were modified for evaluation of environmental assisted slow crack growth and creep in flexural mode. Processing of perovskites of LSC, LSF and LSCF composition were continued for evaluation of mechanical properties as a function of environment. These studies in parallel to those on the LSFCO composition is expect to yield important information on questions such as the role of cation segregation and the stability of the perovskite structure on crack initiation vs. crack growth. Studies have been continued on the La{sub 1-x}Sr{sub x}FeO{sub 3-d} composition using neutron diffraction and TGA studies. A transition from p-type to n-type of conductor was observed at relative low pO{sub 2}, at which the majority carriers changed from the holes to electrons because of the valence state decreases in Fe due to the further loss of oxygen. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport. Data obtained at 850 C show that the stoichiometry in La{sub 0.2}Sr{sub 0.8}Fe{sub 0.8}Cr{sub 0.2}O{sub 3-x} vary from {approx}2.85 to 2.6 over the pressure range studied. From the stoichiometry a lower limit of 2.6 corresponding to the reduction of all Fe{sup 4+} to Fe{sup 3+} and no reduction of Cr{sup 3+} is expected.

S. Bandopadhyay; N. Nagabhushana

2003-08-07T23:59:59.000Z

262

Carbon Monoxide, Ozone, Hydrocarbon Air Quality Standards, and Related  

Broader source: Energy.gov (indexed) [DOE]

Monoxide, Ozone, Hydrocarbon Air Quality Standards, and Monoxide, Ozone, Hydrocarbon Air Quality Standards, and Related Emission Requirements (Ohio) Carbon Monoxide, Ozone, Hydrocarbon Air Quality Standards, and Related Emission Requirements (Ohio) < Back Eligibility Agricultural Commercial Construction Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative State/Provincial Govt Transportation Tribal Government Utility Savings Category Buying & Making Electricity Program Info State Ohio Program Type Environmental Regulations Provider Ohio Environmental Protection Agency This chapter defining the roles of the Ohio Environmental Protection Agency gives specific detail on the regulation point-source air pollution for a variety of industries and pollutants.

263

Iraq`s significant hydrocarbon potential remains relatively undeveloped  

SciTech Connect (OSTI)

Iraq is probably one of the least explored countries in the Middle East, despite the fact that it possesses one of the richest hydrocarbon basins in the world almost on a par to Saudi Arabia`s potential, if not more. The aim of this article is to state the facts about Iraq and focus on the huge but untapped and undeveloped hydrocarbon resources to the international oil community. Perhaps it is best to start by describing briefly the sedimentary and tectonic elements responsible for accumulating such large hydrocarbon resources. The paper describes the basin, tectonic elements, structural anomalies, deep drilling, source rocks, reservoir rocks, characteristics, and new reserves.

AL-Gailani, M. [GeoDesign Ltd., Kingston-upon-Thames (United Kingdom)

1996-07-29T23:59:59.000Z

264

Method for making hydrogen rich gas from hydrocarbon fuel  

DOE Patents [OSTI]

A method of forming a hydrogen rich gas from a source of hydrocarbon fuel in which the hydrocarbon fuel contacts a two-part catalyst comprising a dehydrogenation portion and an oxide-ion conducting portion at a temperature not less than about 400 C for a time sufficient to generate the hydrogen rich gas while maintaining CO content less than about 5 volume percent. There is also disclosed a method of forming partially oxidized hydrocarbons from ethanes in which ethane gas contacts a two-part catalyst comprising a dehydrogenation portion and an oxide-ion conducting portion for a time and at a temperature sufficient to form an oxide. 4 figs.

Krumpelt, M.; Ahmed, S.; Kumar, R.; Doshi, R.

1999-07-27T23:59:59.000Z

265

Method for making hydrogen rich gas from hydrocarbon fuel  

DOE Patents [OSTI]

A method of forming a hydrogen rich gas from a source of hydrocarbon fuel in which the hydrocarbon fuel contacts a two-part catalyst comprising a dehydrogenation portion and an oxide-ion conducting portion at a temperature not less than about 400.degree. C. for a time sufficient to generate the hydrogen rich gas while maintaining CO content less than about 5 volume percent. There is also disclosed a method of forming partially oxidized hydrocarbons from ethanes in which ethane gas contacts a two-part catalyst comprising a dehydrogenation portion and an oxide-ion conducting portion for a time and at a temperature sufficient to form an oxide.

Krumpelt, Michael (Naperville, IL); Ahmed, Shabbir (Bolingbrook, IL); Kumar, Romesh (Naperville, IL); Doshi, Rajiv (Downers Grove, IL)

1999-01-01T23:59:59.000Z

266

Potential benefits of oxygen-enriched intake air in a vehicle powered by a spark-ignition engine  

SciTech Connect (OSTI)

A production vehicle powered by a spark-ignition engine (3.1-L Chevrolet Lumina, model year 1990) was tested. The test used oxygen-enriched intake air containing 25 and 28% oxygen by volume to determine (1) if the vehicle would run without difficulties and (2) if emissions benefits would result. Standard Federal Test Procedure (FTP) emissions test cycles were run satisfactorily. Test results of catalytic converter-out emissions (emissions out of the converter) showed that both carbon monoxide and hydrocarbons were reduced significantly in all three phases of the emissions test cycle. Test results of engine-out emissions (emissions straight out of the engine, with the converter removed) showed that carbon monoxide was significantly reduced in the cold phase. All emission test results were compared with those for normal air (21% oxygen). The catalytic converter also had an improved carbon monoxide conversion efficiency under the oxygen-enriched-air conditions. Detailed results of hydrocarbon speciation indicated large reductions in 1,3-butadiene, formaldehyde, acetaldehyde, and benzene from the engine with the oxygen-enriched air. Catalytic converter-out ozone was reduced by 60% with 25%-oxygen-content air. Although NO{sub x} emissions increased significantly, both for engine-out and catalytic converter-out emissions, we anticipate that they can be ameliorated in the near future with new control technologies. The automotive industry currently is developing exhaust-gas control technologies for an oxidizing environment; these technologies should reduce NO{sub x} emissions more efficiently in vehicles that use oxygen-enriched intake air. On the basis of estimates made from current data, several production vehicles that had low NO{sub x} emissions could meet the 2004 Tier II emissions standards with 25%-oxygen-content air.

Ng, H.K.; Sekar, R.R.

1994-04-01T23:59:59.000Z

267

Oxygen transfer in the implant environment  

E-Print Network [OSTI]

Temperature dependence of oxygen diffusion and consumptionRN. Influence of temperature on oxygen diffusion in hamster341-347, 1988. Cox ME. Oxygen Diffusion in Poly(dimethyl

Goor, Jared Braden

2007-01-01T23:59:59.000Z

268

OXYGEN DIFFUSION IN UO2-x  

E-Print Network [OSTI]

~ K.C. K:i.m, "Oxygen Diffusion in Hypostoichiometricsystem for enriching uo 2 in oxygen-18 or for stoichiometry+nal of Nuclear Materials OXYGEN DIFFUSION IN U0 2 _:x K.C.

Kim, K.C.

2013-01-01T23:59:59.000Z

269

PRIMARY RESEARCH PAPER Water column oxygen demand and sediment oxygen flux  

E-Print Network [OSTI]

PRIMARY RESEARCH PAPER Water column oxygen demand and sediment oxygen flux: patterns of oxygen dissolved oxygen (DO) levels often occur during summer in tidal creeks along the southeastern coast of the USA. We analyzed rates of oxygen loss as water-column biochemical oxygen demand (BOD5) and sediment

Mallin, Michael

270

E-Print Network 3.0 - aromatic hydrocarbon emission Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

emission Search Powered by Explorit Topic List Advanced Search Sample search results for: aromatic hydrocarbon emission...

271

Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue  

E-Print Network [OSTI]

Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue

Dennis, J A

1971-01-01T23:59:59.000Z

272

CRC fuel rating program: road octane performance of oxygenates in 1982 model cars  

SciTech Connect (OSTI)

Because of the widespread interest in the use of alcohols and ethers as gasoline blending components, this program was conducted to evaluate the effects of several oxygenates on gasoline octane performance and to evaluate the effects of car design features such as engine and transmission type. Five oxygenates were evaluated at two nominal concentrations, 5 and 10 volume%, at both regular- and premium-grade octane levels: methanol (MeOH), ethanol (ETOH), isopropanol (IPA), tertiary butanol (TBA), and methyl tertiary butyl ether (MTBE). A blend of 5% MeOH and 5 percent TBA was also tested at both octane levels. Twenty-eight unleaded fuels, including four hydrocarbon fuels, two hydrocarbon fuels plus toluene, and twenty-two oxygenated fuels, were rated in duplicate in thirty-eight cars using the Modified Uniontown Technique (CRC Designation F-28-75 described in Appendix C), plus some additional instructions. All testing was done on chassis dynamometers. Ratings were obtained at full throttle with all thirty-eight cars, and at the most critical part-throttle condition (occurring with manifold vacuum of 4 in. Hg (13.5 kPa) or greater above the full-throttle vacuum) with nine cars.

Not Available

1985-07-01T23:59:59.000Z

273

Separation of toxic metal ions, hydrophilic hydrocarbons, hydrophobic fuel and halogenated hydrocarbons and recovery of ethanol from a process stream  

DOE Patents [OSTI]

This invention provides a process to tremendously reduce the bulk volume of contaminants obtained from an effluent stream produced subsurface remediation. The chemicals used for the subsurface remediation are reclaimed for recycling to the remediation process. Additional reductions in contaminant bulk volume are achieved by the ultra-violet light destruction of halogenated hydrocarbons, and the complete oxidation of hydrophobic fuel hydrocarbons and hydrophilic hydrocarbons. The contaminated bulk volume will arise primarily from the disposal of the toxic metal ions. The entire process is modular, so if there are any technological breakthroughs in one or more of the component process modules, such modules can be readily replaced.

Kansa, Edward J. (Livermore, CA); Anderson, Brian L. (Lodi, CA); Wijesinghe, Ananda M. (Tracy, CA); Viani, Brian E. (Oakland, CA)

1999-01-01T23:59:59.000Z

274

Electrocatalytic Reactivity for Oxygen Reduction of Palladium...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reactivity for Oxygen Reduction of Palladium-Modified Carbon Nanotubes Synthesized in Supercritical Fluid. Electrocatalytic Reactivity for Oxygen Reduction of Palladium-Modified...

275

Angling chromium to let oxygen through | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

which enable facile oxygen anion diffusion at low temperature. Brighter spheres are strontium ions; less-bright spheres are chromium ions. Oxygen anions are barely visible, and...

276

Extracorporeal membrane oxygenation promotes long chain fatty...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

membrane oxygenation promotes long chain fatty acid oxidation in the immature swine heart in vivo. Extracorporeal membrane oxygenation promotes long chain fatty acid oxidation...

277

OXYGEN DIFFUSION IN HYPOSTOICHIOMETRIC URANIUM DIOXIDE  

E-Print Network [OSTI]

Research Division OXYGEN DIFFUSION IN HYPOSTOICHIOMETRIC11905 -DISCLAIMER - OXYGEN DIFFUSION IN HYPOSTOICHIOMETRICc o n e e n i g woroxygen self-diffusion coefficient

Kim, Kee Chul

2010-01-01T23:59:59.000Z

278

Formation, characterization and reactivity of adsorbed oxygen...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Abstract: The formation...

279

Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction...  

Broader source: Energy.gov (indexed) [DOE]

Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction Presentation slides from the June 19, 2012, Fuel...

280

Oxygenate Supply/Demand Balances  

Gasoline and Diesel Fuel Update (EIA)

Oxygenate Supply/Demand Oxygenate Supply/Demand Balances in the Short-Term Integrated Forecasting Model By Tancred C.M. Lidderdale This article first appeared in the Short-Term Energy Outlook Annual Supplement 1995, Energy Information Administration, DOE/EIA-0202(95) (Washington, DC, July 1995), pp. 33-42, 83-85. The regression results and historical data for production, inventories, and imports have been updated in this presentation. Contents * Introduction o Table 1. Oxygenate production capacity and demand * Oxygenate demand o Table 2. Estimated RFG demand share - mandated RFG areas, January 1998 * Fuel ethanol supply and demand balance o Table 3. Fuel ethanol annual statistics * MTBE supply and demand balance o Table 4. EIA MTBE annual statistics * Refinery balances

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

It's Elemental - The Element Oxygen  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Nitrogen Nitrogen Previous Element (Nitrogen) The Periodic Table of Elements Next Element (Fluorine) Fluorine The Element Oxygen [Click for Isotope Data] 8 O Oxygen 15.9994 Atomic Number: 8 Atomic Weight: 15.9994 Melting Point: 54.36 K (-218.79°C or -361.82°F) Boiling Point: 90.20 K (-182.95°C or -297.31°F) Density: 0.001429 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 16 Group Name: Chalcogen What's in a name? From the greek words oxys and genes, which together mean "acid forming." Say what? Oxygen is pronounced as OK-si-jen. History and Uses: Oxygen had been produced by several chemists prior to its discovery in 1774, but they failed to recognize it as a distinct element. Joseph

282

The System BoronOxygen  

Science Journals Connector (OSTI)

This presentation covers the years 1985 to 1988 and, in part, to 1992. It continues the previous discussion of the system boronoxygen in Boron Compounds 3rd Suppl. Vol. 2, 1987, pp. 1/184, and earlier liter...

Gert Heller

1993-01-01T23:59:59.000Z

283

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the initial studies on newer compositions and also includes newer approaches to address various materials issues such as in metal-ceramic sealing. The current quarter's research has also focused on developing a comprehensive reliability model for predicting the structural behavior of the membranes in realistic conditions. In parallel to industry provided compositions, models membranes have been evaluated in varying environment. Of importance is the behavior of flaws and generation of new flaws aiding in fracture. Fracture mechanics parameters such as crack tip stresses are generated to characterize the influence of environment. Room temperature slow crack growth studies have also been initiated in industry provided compositions. The electrical conductivity and defect chemistry of an A site deficient compound (La{sub 0.55}Sr{sub 0.35}FeO{sub 3}) was studied. A higher conductivity was observed for La{sub 0.55}Sr{sub 0.35}FeO{sub 3} than that of La{sub 0.60}Sr{sub 0.40}FeO{sub 3} and La{sub 0.80}Sr{sub 0.20}FeO{sub 3}. Defect chemistry analysis showed that it was primarily contributed by a higher carrier concentration in La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. Moreover, the ability for oxygen vacancy generation is much higher in La{sub 0.55}Sr{sub 0.35}FeO{sub 3} as well, which indicates a lower bonding strength between Fe-O and a possible higher catalytic activity for La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. The program continued to investigate the thermodynamic properties (stability and phase separation behavior) and total conductivity of prototype membrane materials. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previous report listed initial measurements on a sample of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-x} prepared in-house by Praxair. Subsequently, a second sample of powder from a larger batch of sample were characterized and compared with the results from the previous batch.

S. Bandopadhyay; N. Nagabhushana; Thomas W. Eagar; Harold R. Larson; Raymundo Arroyave; X.-D Zhou; Y.-W. Shin; H.U. Anderson; Nigel Browning; Alan Jacobson; C.A. Mims

2003-11-01T23:59:59.000Z

284

Underground storage of natural gas, liquid hydrocarbons, and carbon dioxide  

Broader source: Energy.gov (indexed) [DOE]

storage of natural gas, liquid hydrocarbons, and carbon storage of natural gas, liquid hydrocarbons, and carbon dioxide (Louisiana) Underground storage of natural gas, liquid hydrocarbons, and carbon dioxide (Louisiana) < Back Eligibility Commercial Construction Industrial Investor-Owned Utility Municipal/Public Utility Utility Program Info State Louisiana Program Type Environmental Regulations Siting and Permitting The Louisiana Department of Environmental Quality regulates the underground storage of natural gas or liquid hydrocarbons and carbon dioxide. Prior to the use of any underground reservoir for the storage of natural gas and prior to the exercise of eminent domain by any person, firm, or corporation having such right under laws of the state of Louisiana, the commissioner, shall have found all of the following:

285

Determination of Total Petroleum Hydrocarbons (TPH) Using Total Carbon Analysis  

SciTech Connect (OSTI)

Several methods have been proposed to replace the Freon(TM)-extraction method to determine total petroleum hydrocarbon (TPH) content. For reasons of cost, sensitivity, precision, or simplicity, none of the replacement methods are feasible for analysis of radioactive samples at our facility. We have developed a method to measure total petroleum hydrocarbon content in aqueous sample matrixes using total organic carbon (total carbon) determination. The total carbon content (TC1) of the sample is measured using a total organic carbon analyzer. The sample is then contacted with a small volume of non-pokar solvent to extract the total petroleum hydrocarbons. The total carbon content of the resultant aqueous phase of the extracted sample (TC2) is measured. Total petroleum hydrocarbon content is calculated (TPH = TC1-TC2). The resultant data are consistent with results obtained using Freon(TM) extraction followed by infrared absorbance.

Ekechukwu, A.A.

2002-05-10T23:59:59.000Z

286

Temporary Anion States of Polyatomic Hydrocarbons KENNETH D. JORDAN'  

E-Print Network [OSTI]

Temporary Anion States of Polyatomic Hydrocarbons KENNETH D. JORDAN' OSpemnenr Of C%sITIkby. M k I. A biographyand photograph of Kenneth D. Jordan appear In previous paper in this issue. far outweighsthat

Simons, Jack

287

Biodegradability of select polycyclic aromatic hydrocarbon (pah) mixtures  

E-Print Network [OSTI]

Polycyclic aromatic hydrocarbons (PAHs) are environmentally significant because of their ubiquity and the toxicity of some. Their recalcitrance and persistence makes them problematic environmental contaminants. Microbial degradation is considered...

Desai, Anuradha M.

2007-04-25T23:59:59.000Z

288

Experiments on Hydrocarbon Gas Hydrates in Unconsolidated Sand  

Science Journals Connector (OSTI)

Experiments were carried out to observe the formation and decomposition of hydrocarbon gas hydrates in an unconsolidated sand pack 4.4 cm in diameter and ... 43 bars and 5 to 10C; gas used was 90% methane and 10...

P. E. Baker

1974-01-01T23:59:59.000Z

289

Filtration Combustion in Hydrocarbon Desorption from a Porous Medium  

Science Journals Connector (OSTI)

We have investigated theoretically and experimentally the process of filtration combustion with hydrocarbon desorption from a porous skeleton realized, in particular, in heat cleaning of porous media out of resid...

S. I. Fut'ko; K. V. Dobrego; E. S. Shmelev

2003-11-01T23:59:59.000Z

290

Fireball during combustion of hydrocarbon fueld releases II. Thermal radiation  

Science Journals Connector (OSTI)

The processes of radiative heat transfer in a fireball which develops upon ignition of a cloud of hydrocarbon fuel near the Earths surface are simulated numerically. The emissive characteristics of combustion pr...

G. M. Makhviladze; J. P. Roberts; S. E. Yakush

291

Mathematical modeling of solid oxide fuel cells using hydrocarbon fuels  

E-Print Network [OSTI]

Solid oxide fuel cells (SOFCs) are high efficiency conversion devices that use hydrogen or light hydrocarbon (HC) fuels in stationary applications to produce quiet and clean power. While successful, HC-fueled SOFCs face ...

Lee, Won Yong, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

292

Effect of the Composition of Hydrocarbon Streams on HCCI Performance  

Broader source: Energy.gov (indexed) [DOE]

of hydrocarbon samples and can be treated as compositional variables which could describe bulk properties of the samples Sample fingerprint STEP 1: Data receiving Q(2d)RPR How...

293

Hydrocarbon pollution control and remediation of groundwater: a brief review  

Science Journals Connector (OSTI)

...oil-contaminated sediments. There are two main remediation techniques: soil washing and bio- remediation. With soil washing, contaminated soil is leached with water containing a surfactant to assist in hydrocarbon removal. In situ washing is undertaken...

L. Clark

294

THE HEATS OF COMBUSTION OF AROMATIC HYDROCARBONS AND HEXAMETHYLENE.  

Science Journals Connector (OSTI)

THE HEATS OF COMBUSTION OF AROMATIC HYDROCARBONS AND HEXAMETHYLENE. ... Citation data is made available by participants in CrossRef's Cited-by Linking service. ... Experimental methods included adiabatic heat-capacity calorimetry (5 K to 420 K), comparative ... ...

Theodore W. Richards; Frederick Barry

1915-01-01T23:59:59.000Z

295

Measurements of dissolved nonmethane hydrocarbons in sea water  

Science Journals Connector (OSTI)

An automated stripping technique for the measurement of dissolved hydrocarbons in sea water is presented together with some results obtained ... cruise from Europe to Brazil. The sea water concentrations of NMHC ...

C. Plass; R. Koppmann; J. Rudolph

296

Hygienic rating of hydrocarbons in bottom deposits of water ecosystems  

Science Journals Connector (OSTI)

The authors of this article draw the readers attention to the topical problem of the contamination of bottom deposits of water ecosystems by hydrocarbons, such as oil and gas condensate,...

Rauf Valievich Galiulin

2014-05-01T23:59:59.000Z

297

Cooling and solidification of heavy hydrocarbon liquid streams  

DOE Patents [OSTI]

A process and apparatus for cooling and solidifying a stream of heavy hydrocarbon material normally boiling above about 850.degree. F., such as vacuum bottoms material from a coal liquefaction process. The hydrocarbon stream is dropped into a liquid bath, preferably water, which contains a screw conveyor device and the stream is rapidly cooled, solidified and broken therein to form discrete elongated particles. The solid extrudates or prills are then dried separately to remove substantially all surface moisture, and passed to further usage.

Antieri, Salvatore J. (Trenton, NJ); Comolli, Alfred G. (Yardley, PA)

1983-01-01T23:59:59.000Z

298

Conversion of methane and acetylene into gasoline range hydrocarbons  

E-Print Network [OSTI]

CONVERSION OF METHANE AND ACETYLENE INTO GASOLINE RANGE HYDROCARBONS A Thesis by AMMAR ALKHAWALDEH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 2000 Major Subject: Chemical Engineering CONVERSION OF METHANE AND ACETYLENE INTO GASOLINE RANGE HYDROCARBONS A Thesis by AMMAR ALKHAWALDEH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Alkhawaldeh, Ammar

2012-06-07T23:59:59.000Z

299

Water column oxygen demand and sediment oxygen flux: patterns of oxygen depletion in tidal creeks  

Science Journals Connector (OSTI)

Five study sites were chosen in Futch Creek, Hewletts Creek and Pages Creek,...1). Sites were chosen to reflect a range in the values of dissolved oxygen levels, chlorophyll a concentrations and nutrient (nitroge...

Tara A. MacPherson; Lawrence B. Cahoon; Michael A. Mallin

2007-07-01T23:59:59.000Z

300

Low severity hydrocarbon steam reforming process  

SciTech Connect (OSTI)

A process is described for producing ammonia which comprises: (a) primary catalytically reforming at super atmospheric pressure in a direct-fired primary reforming zone, a hydrocarbon feedstock with steam to produce a gas containing carbon oxides, hydrogen and methane; (b) secondary catalytically reforming the gas from step (a) by introducing air and bringing the mixture towards equilibrium thereby producing a secondary reformer effluent gas containing nitrogen, carbon oxides, hydrogen and a decreased quantity of methane; (c) converting carbon monoxide catalytically with steam to carbon dioxide and hydrogen; (d) removing carbon oxides to give an ammonia synthesis gas comprising nitrogen and hydrogen and compressing the gas to ammonia synthesis pressure; (e) reacting the synthesis gas in an ammonia synthesis zone to produce ammonia and recovering ammonia from the reacted gas to produce an ammonia-depleted gas stream; (f) recycling at least a portion of the ammonia-depleted gas stream to the ammonia synthesis zone; and (g) treating a sidestream of the ammonia-depleted gas to separate a stream enriched in hydrogen and an inerts-enriched gas stream, and returning the enriched hydrogen stream to the ammonia synthesis zone.

Osman, R.M.; Byington, R.G.

1986-06-03T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Emission of polycyclic aromatic hydrocarbons in China  

SciTech Connect (OSTI)

Emission of 16 polycyclic aromatic hydrocarbons (PAHs) listed as U.S. Environmental Protection Agency (U.S. EPA) priority pollutants from major sources in China were compiled. Geographical distribution and temporal change of the PAH emission, as well as emission profiles, are discussed. It was estimated that the total PAH emission in China was 25,300 tons in 2003. The emission profile featured a relatively higher portion of high molecular weight (HMW) species with carcinogenic potential due to large contributions of domestic coal and coking industry. Among various sources, biomass burning, domestic coal combustion, and the coking industry contributed 60%, 20%, and 16% of the total emission, respectively. Total emission, emission density, emission intensity, and emission per capita showed geographical variations. In general, the southeastern provinces were characterized by higher emission density, while those in western and northern China featured higher emission intensity and population-normalized emission. Although energy consumption in China went up continuously during the past two decades, annual emission of PAHs fluctuated depending on the amount of domestic coal consumption, coke production, and the efficiency of energy utilization. 47 refs., 6 figs.

Shanshan Xu; Wenxin Liu; Shu Tao [Peking University, Beijing (China). Laboratory for Earth Surface Processes, College of Environmental Sciences

2006-02-01T23:59:59.000Z

302

Rock types, pore types, and hydrocarbon exploration  

SciTech Connect (OSTI)

A proposed exploration-oriented method of classifying porosity in sedimentary rocks is based on microscopic examination cores or cuttings. Factors include geometry, size, abundance, and connectivity of the pores. The porosity classification is predictive of key petrophysical characteristics: porosity-permeability relationships, capillary pressures, and (less certainly) relative permeabilities. For instance, intercrystalline macroporosity typically is associated with high permeability for a given porosity, low capillarity, and favorable relative permeabilities. This is found to be true whether this porosity type occurs in a sucrosic dolomite or in a sandstone with pervasive quartz overgrowths. This predictive method was applied in three Rocky Mountain oil plays. Subtle pore throat traps could be recognized in the J sandstone (Cretaceous) in the Denver basin of Colorado by means of porosity permeability plotting. Variations in hydrocarbon productivity from a Teapot Formation (Cretaceous) field in the Powder River basin of Wyoming were related to porosity types and microfacies; the relationships were applied to exploration. Rock and porosity typing in the Red River Formation (Ordovician) reconciled apparent inconsistencies between drill-stem test, log, and mud-log data from a Williston basin wildcat. The well was reevaluated and completed successfully, resulting in a new field discovery. In each of these three examples, petrophysics was fundamental for proper evaluation of wildcat wells and exploration plays.

Coalson, E.B.; Hartmann, D.J.; Thomas, J.B.

1985-05-01T23:59:59.000Z

303

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C in N{sub 2}. Space group of R3c was found to result in a better refinement and is used in this study. The difference for crystal structure, lattice parameters and local crystal chemistry for LSFT nearly unchanged when gas environment switched from air to N{sub 2}. Stable crack growth studies on Dense OTM bars provided by Praxair were done at room temperature in air. A bridge-compression fixture was fabricated to achieve stable pre-cracks from Vickers indents. Post fracture evaluation indicated stable crack growth from the indent and a regime of fast fracture. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. The thermal and chemical expansion of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were studied at 800 {le} T {le} 1000 C and at {approx} 1 x 10{sup -15} {le} pO{sub 2} {le} 0.21 atm. The thermal expansion coefficient of the sample was calculated from the dilatometric analysis in the temperature range between room temperature and 1200 C in air. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

304

Method And Apparatus For Converting Hydrocarbon Fuel Into Hydrogen Gas And Carbon Dioxide  

DOE Patents [OSTI]

A method is disclosed for synthesizing hydrogen gas from hydrocarbon fuel. A first mixture of steam and a first fuel is directed into a first tube 208 to subject the first mixture to a first steam reforming reaction in the presence of a first catalyst 214. A stream of oxygen-containing gas is pre-heated by transferring heat energy from product gases. A second mixture of the pre-heated oxygen-containing gas and a second fuel is directed into a second tube 218 disposed about the first tube 208 to subject the second mixture to a partial oxidation reaction and to provide heat energy for transfer to the first tube 208. A first reaction reformate from the first tube 208 and a second reaction reformate from the second tube 218 are directed into a third tube 224 disposed about the second tube 218 to subject the first and second reaction reformates to a second steam reforming reaction, wherein heat energy is transferred to the third tube 224 from the second tube 218.

Clawson, Lawrence G. (Dover, MA); Mitchell, William L. (Belmont, MA); Bentley, Jeffrey M. (Westford, MA); Thijssen, Johannes H. J. (Cambridge, MA)

2000-09-26T23:59:59.000Z

305

Researchers Directly Observe Oxygen Signature in the Oxygen-evolving  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Researchers Directly Observe Oxygen Signature in the Researchers Directly Observe Oxygen Signature in the Oxygen-evolving Complex of Photosynthesis Arguably the most important chemical reaction on earth is the photosynthetic splitting of water to molecular oxygen by the Mn-containing oxygen-evolving complex (Mn-OEC) in the protein known as photosystem II (PSII). It is this reaction which has, over the course of some 3.8 billion years, gradually filled our atmosphere with O2 and consequently enabled and sustained the evolution of complex aerobic life. Coupled to the reduction of carbon dioxide, biological photosynthesis contributes foodstuffs for nutrition while recycling CO2 from the atmosphere and replacing it with O2. By utilizing sunlight to power these energy-requiring reactions, photosynthesis also serves as a model for addressing societal energy needs as we enter an era of diminishing fossil fuel resources and climate change. Understanding, at the molecular level, the dynamics and mechanisms behind photosynthesis is of fundamental importance and will prove critical to the future design of devices aimed at converting sunlight into electrochemical energy and transportable fuel.

306

A preliminary evaluation model for reservoir hydrocarbon-generating potential established based on dissolved hydrocarbons in oilfield water  

Science Journals Connector (OSTI)

A large number of oilfield water samples were analyzed in this work. Research ... relationship between the concentrations and distribution of dissolved hydrocarbons suggested that the contents and composition of ...

Hongjing Zhao; Weilin Sun; Baotian He; Bowen Mei

2006-01-01T23:59:59.000Z

307

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES  

E-Print Network [OSTI]

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES Alejandro Montoya, Jorge O. Gil, Fanor-rich site of the carbon basal plane of graphite and then, it dissociates into oxygen atoms.1,2 Oxygen atoms at the edge of the carbon surface can form covalent bonds with oxygen. These sites can chemisorb

Truong, Thanh N.

308

Kidney cancer and hydrocarbon exposures among petroleum refinery workers  

SciTech Connect (OSTI)

To evaluate the hypothesis of increased kidney cancer risk after exposure to hydrocarbons, especially those present in gasoline, we conducted a case-control study in a cohort of approximately 100,000 male refinery workers from five petroleum companies. A review of 18,323 death certificates identified 102 kidney cancer cases, to each of whom four controls were matched by refinery location and decade of birth. Work histories, containing an average of 15.7 job assignments per subject, were found for 98% of the cases and 94% of the controls. Tb each job, industrial hygienists assigned semiquantitative ratings for the intensity and frequency of exposures to three hydrocarbon categories: nonaromatic liquid gasoline distillates, aromatic hydrocarbons, and the more volatile hydrocarbons. Ratings of {open_quotes}present{close_quotes} or {open_quotes}absent{close_quotes} were assigned for seven additional exposures: higher boiling hydrocarbons, polynuclear aromatic hydrocarbons, asbestos, chlorinated solvents, ionizing radiation, and lead. Each exposure had either no association or a weak association with kidney cancer. For the hydrocarbon category of principal a priori interest, the nonaromatic liquid gasoline distillates, the estimated relative risk (RR) for any exposure above refinery background was 1.0 (95% confidence interval [CI] 0.5-1.9). Analyses of cumulative exposures and of exposures in varying time periods before kidney cancer occurrence also produced null or near-null results. In an analysis of the longest job held by each subject (average duration 9.2 years or 40% of the refiner&y work history), three groups appeared to be at increased risk: laborers (RR = 1.9,95% CI 1.0-3.9); workers in receipt, storage, and movements (RR = 2.5,95% CI 0.9-6.6); and unit cleaners (RR = 2.3, 95% CI 0.5-9.9). 53 refs., 7 tabs.

Poole, C.; Dreyer, N.A.; Satterfield, M.H. [Epidemiology Resources Inc., Newton Lower Falls, MA (United States); Levin, L. [Drexel Univ., Philadelphia, PA (United States)

1993-12-01T23:59:59.000Z

309

Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides  

E-Print Network [OSTI]

Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides Bassat J we obtain in both cases data concerning the oxygen diffusion in the bulk and the oxygen exchange with regards to the oxygen reduction reaction. Detailed experimental and analytical processes are given

Paris-Sud XI, Université de

310

In Situ Hydrocarbon Degradation by Indigenous Nearshore Bacterial Populations  

SciTech Connect (OSTI)

Potential episodic hydrocarbon inputs associated with oil mining and transportation together with chronic introduction of hydrocarbons via urban runoff into the relatively pristine coastal Florida waters poses a significant threat to Florida's fragile marine environment. It is therefore important to understand the extent to which indigenous bacterial populations are able to degrade hydrocarbon compounds and also determine factors that could potentially control and promote the rate at which these compounds are broken down in situ. Previous controlled laboratory experiments carried out by our research group demonstrated that separately both photo-oxidation and cometabolism stimulate bacterial hydrocarbon degradation by natural bacterial assemblages collected from a chronically petroleum contaminated site in Bayboro Bay, Florida. Additionally, we also demonstrated that stable carbon and radiocarbon abundances of respired CO{sub 2} could be used to trace in situ hydrocarbon degradation by indigenous bacterial populations at this same site. This current proposal had two main objectives: (a) to evaluate the cumulative impact of cometabolism and photo-oxidation on hydrocarbon degradation by natural bacterial assemblages collected the same site in Bayboro Bay, Florida and (b) to determine if in situ hydrocarbon degradation by indigenous bacterial populations this site could be traced using natural radiocarbon and stable carbon abundances of assimilated bacterial carbon. Funds were used for 2 years of full support for one ESI Ph.D. student, April Croxton. To address our first objective a series of closed system bacterial incubations were carried out using photo-oxidized petroleum and pinfish (i.e. cometabolite). Bacterial production of CO{sub 2} was used as the indicator of hydrocarbon degradation and {delta}{sup 13}C analysis of the resultant CO{sub 2} was used to evaluate the source of the respired CO{sub 2} (i.e. petroleum hydrocarbons or the pinfish cometabolite). Results from these time series experiments demonstrated that short-term exposure of petroleum to UV light enhanced hydrocarbon degradation by 48% over that observed for non-photo-oxidized petroleum. Despite the greater bio-availability of the photo-oxidized over the non-photo-oxidized petroleum, an initial lag in CO{sub 2} production was observed indicating potential phototoxicity of the photo- by-products. {delta}{sup 13}C analysis and mass balance calculations reveal that co-metabolism with pinfish resulted in increased hydrocarbon degradation for both photo-oxidized and non-photo-oxidized petroleum each by over 100%. These results demonstrate the cumulative effect of photo-oxidation and co-metabolism on petroleum hydrocarbon degradation by natural bacterial populations indigenous to systems chronically impacted by hydrocarbon input. To address the second objective of this proposal bacterial concentrates were collected from Bayboro Harbor in April 2001 for nucleic acid extraction and subsequent natural radiocarbon abundance analyses. Unfortunately, however, all of these samples were lost due to a faulty compressor in our -70 freezer. The freezer was subsequently repaired and samples were again collected from Bayboro Harbor in June 2002 and again December 2002. Several attempts were made to extract the nucleic acid samples--however, the student was not able to successfully extract and an adequate amount of uncontaminated nucleic acid samples for subsequent natural radiocarbon abundance measurements of the bacterial carbon by accelerator mass spectrometry (i.e. require at least 50 {micro}g carbon for AMS measurement). Consequently, we were not able to address the second objective of this proposed work.

Cherrier, J.

2005-05-16T23:59:59.000Z

311

Preliminary assessment of hydrocarbon potential in southern Illinois  

SciTech Connect (OSTI)

Hydrocarbon exploration has been sparse south of the Cottage Grove fault system in southern Illinois. Over 240,000 ac in this area are within the Shawnee National Forest (SNF). Upcoming review of mineral exploration policy on SNF land and a recent amendment to the Mineral Leasing Act (1987) will result in release of portions of the SNF for competitive and potentially noncompetitive bidding for mineral exploration tracts in the near future. Preliminary assessment of hydrocarbon potential has been carried out in southern Illinois. Numerous oil shows occur in Paleozoic strata south of the Cottage Grove fault system, which, at present, describes the southern boundary of most oil production in Illinois. Only Mitchellsville oil field in southern Saline County lies south of the Cottage Grove fault system. The Upper Devonian New Albany Shale, though to be the primary source rock for Illinois basin hydrocarbons, underlies most of the area. Older potential source rocks may be present. Depositional trends of prolific oil-productive Mississippian strata in Illinois continue southward through the area. Few drill holes have tested strata older than Mississippian in the area. Complex faulting in the Rough Creek-Shawneetown fault system may have improved the potential for hydrocarbon emplacement and entrapment in this region. Preliminary assessment of hydrocarbon potential indicates that this wildcat region deserves further tests.

Crockett, J.E.; Oltz, D.F. (Illinois State Geological Survey, Champaign (USA))

1989-08-01T23:59:59.000Z

312

Methane-derived hydrocarbons produced under upper-mantle conditions  

SciTech Connect (OSTI)

There is widespread evidence that petroleum originates from biological processes. Whether hydrocarbons can also be produced from abiogenic precursor molecules under the high-pressure, high-temperature conditions characteristic of the upper mantle remains an open question. It has been proposed that hydrocarbons generated in the upper mantle could be transported through deep faults to shallower regions in the Earth's crust, and contribute to petroleum reserves. Here we use in situ Raman spectroscopy in laser-heated diamond anvil cells to monitor the chemical reactivity of methane and ethane under upper-mantle conditions. We show that when methane is exposed to pressures higher than 2 GPa, and to temperatures in the range of 1,000-1,500 K, it partially reacts to form saturated hydrocarbons containing 2-4 carbons (ethane, propane and butane) and molecular hydrogen and graphite. Conversely, exposure of ethane to similar conditions results in the production of methane, suggesting that the synthesis of saturated hydrocarbons is reversible. Our results support the suggestion that hydrocarbons heavier than methane can be produced by abiogenic processes in the upper mantle.

Kolesnikov, Anton; Kutcherov, Vladimir G.; Goncharov, Alexander F.; (CIW); (RITS)

2009-08-13T23:59:59.000Z

313

Determination of Polycyclic Aromatic Hydrocarbons in Fresh Milk by Hollow Fiber Liquid-Phase MicroextractionGas Chromatography Mass Spectrometry  

Science Journals Connector (OSTI)

......Polycyclic Aromatic Hydrocarbons in Fresh Milk by...polycyclic aromatic hydrocarbons (PAHs) in fresh...more volatile and heat sensitive. The...Polycyclic aromatic hydrocarbons (PAHs) are compounds...the incomplete combustion of carbon-containing...respectively. Data were collected......

Mohd Marsin Sanagi; Saw Hong Loh; Wan Aini Wan Ibrahim; Mohamed Noor Hasan; Hassan Y. Aboul Enein

2013-02-01T23:59:59.000Z

314

Hepatic coenzyme Q redox balance of fishes as a potential bioindicator of environmental contamination by polycyclic aromatic hydrocarbons  

Science Journals Connector (OSTI)

...at the land-water interface are...polycyclic aromatic hydrocarbon (PAH) contamination...Markers 0 Polycyclic Hydrocarbons, Aromatic 0 Water Pollutants, Chemical...metabolism Polycyclic Hydrocarbons, Aromatic toxicity...Ubiquinone metabolism Water Pollutants, Chemical...

2011-01-01T23:59:59.000Z

315

Quantifying the areal extent and dissolved oxygen concentrations of Archean oxygen oases.  

E-Print Network [OSTI]

??Several lines of evidence indicate that the advent of oxygenic photosynthesis preceded the oxygenation of the atmosphereperhaps by as much as 300 million years. The (more)

Olson, Stephanie

2013-01-01T23:59:59.000Z

316

Hydrocarbon composition of crude oil from Lam Bank  

SciTech Connect (OSTI)

The authors discuss the crude oil from a new offshore field called the Lam Bank in the Caspian Sea. A segregated commercial crude was distilled and the distillation data is shown. In order to determine the content of n-paraffins, the naphthenic-paraffinic part of the narrow cuts was subjected to adsorptive separation on CaA zeolite. Owing to the high contents of naphthenic and isoparaffinic hydrocarbons and the low content of aromatic hydrocarbons in the distillate part, this crude can be used to produce high-quality fuels and oils by the use of the dewaxing processes.

Samedova, F.I.; Agaeva, R.M.; Alieva, F.Z.; Valiev, M.A.

1987-07-01T23:59:59.000Z

317

Method and apparatus for production of subsea hydrocarbon formations  

DOE Patents [OSTI]

A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external flotation tanks located below the water surface. The surface buoy is secured to the sea bed by one or more tendons which are anchored to a foundation with piles imbedded in the sea bed. The system accommodates multiple versions on the surface buoy configuration. 20 figures.

Blandford, J.W.

1995-01-17T23:59:59.000Z

318

Method and apparatus for production of subsea hydrocarbon formations  

DOE Patents [OSTI]

A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external floatation tanks located below the water surface. The surface buoy is secured to the seabed by one or more tendons which are anchored to a foundation with piles imbedded in the seabed. The system accommodates multiple versions on the surface buoy configuration.

Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

1995-01-01T23:59:59.000Z

319

Method for determining processability of a hydrocarbon containing feedstock  

SciTech Connect (OSTI)

Disclosed herein is a method involving the steps of (a) precipitating an amount of asphaltenes from a liquid sample of a first hydrocarbon-containing feedstock having solvated asphaltenes therein with one or more first solvents in a column; (b) determining one or more solubility characteristics of the precipitated asphaltenes; (c) analyzing the one or more solubility characteristics of the precipitated asphaltenes; and (d) correlating a measurement of feedstock reactivity for the first hydrocarbon-containing feedstock sample with a mathematical parameter derived from the results of analyzing the one or more solubility characteristics of the precipitated asphaltenes.

Schabron, John F.; Rovani, Jr., Joseph F.

2013-09-10T23:59:59.000Z

320

Upgrading of petroleum oil feedstocks using alkali metals and hydrocarbons  

DOE Patents [OSTI]

A method of upgrading an oil feedstock by removing heteroatoms and/or one or more heavy metals from the oil feedstock composition. This method reacts the oil feedstock with an alkali metal and an upgradant hydrocarbon. The alkali metal reacts with a portion of the heteroatoms and/or one or more heavy metals to form an inorganic phase separable from the organic oil feedstock material. The upgradant hydrocarbon bonds to the oil feedstock material and increases the number of carbon atoms in the product. This increase in the number of carbon atoms of the product increases the energy value of the resulting oil feedstock.

Gordon, John Howard

2014-09-09T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Isoconversional Kinetic Analysis of the Combustion of Heavy Hydrocarbons  

Science Journals Connector (OSTI)

One method to access unconventional, heavy-oil resources as well as waterflood residual oil is to apply in situ combustion (ISC) to oxidize in place a small fraction of the hydrocarbon, thereby providing heat to reduce oil viscosity and pressure that enhances recovery. ... As shown by Vyazovkin,(12) these deviations of temperature yield erroneous values of activation energy, when such a data set is used with a model that assumes linear heating. ... Estimates were made of the heat produced, and a formula was derived for computing the heat of combustion of hydrocarbons in the high-temp. ...

Murat Cinar; Louis M. Castanier; Anthony R. Kovscek

2009-07-06T23:59:59.000Z

322

Response to Comment on Experimental observation of carbon dioxide reduction in exhaust gas from hydrocarbon fuel burning [Phys. Plasmas17, 014701 (2010)  

Science Journals Connector (OSTI)

A high-voltage cathode initiates an electron emission resulting in a reduction in the carbon dioxide concentration in exhaust gas from the burning of hydrocarbon fuel. Assuming that the observed carbon dioxide reduction is originated from the molecular decomposition the energy needed for the endothermic reaction of this carbon dioxide reduction may stem primarily from the internal energy reduction in the exhaust gas in accordance of the first law of the thermodynamics. An oxygen increase due to the reduction in carbon dioxide in a discharge gas was observed in real time.

Han S. Uhm; Chul H. Kim

2010-01-01T23:59:59.000Z

323

Experimental and artificial neural network modeling study on soot formation in premixed hydrocarbon flamesq  

E-Print Network [OSTI]

Experimental and artificial neural network modeling study on soot formation in premixed hydrocarbon after the methane flames, respectively. Three-layer, feed- forward type artificial neural networks rights reserved. Keywords: Soot; Hydrocarbon flames; Artificial neural networks 1. Introduction

Senkan, Selim M.

324

The Fate of Fossil Fuel Hydrocarbons in Marine Animals [and Discussion  

Science Journals Connector (OSTI)

20 May 1975 research-article The Fate of Fossil Fuel Hydrocarbons in Marine Animals [and Discussion] E...have been made of their fate in mammals. The fate of fossil fuel hydrocarbons in marine animals. | Journal Article...

1975-01-01T23:59:59.000Z

325

Bioenergy Technologies Office Conversion R&D Pathway: Syngas Upgrading to Hydrocarbon Fuels  

Broader source: Energy.gov [DOE]

Syngas upgrading to hydrocarbon fuels is one of eight priority pathways chosen to convert biomass into hydrocarbon fuels by the Bioenergy Technologies Office. These pathways were down-selected from an initial list of 18.

326

Dynamic study of coupled heavy hydrocarbon pyrolysis and combustion. N. Gascoina*  

E-Print Network [OSTI]

1/28 Dynamic study of coupled heavy hydrocarbon pyrolysis and combustion. N. Gascoina* , P of the heat transfer dynamics. Finally, the combustion mechanism is applied and validated experimentally for kerosene pyrolysis application. Keywords Regenerative cooling; Hydrocarbon pyrolysis; Supersonic Combustion

Boyer, Edmond

327

The Energies of the Atomic Linkages in the Normal Paraffin Hydrocarbons  

Science Journals Connector (OSTI)

...normal paraffin hydrocarbons, in the gaseous...values for the heats of combustion of these gases...values for the heats of combustion of the hydrocarbon gases,4'5...Jessup4 on the heats of combustion of normal heptane...

Frederick D. Rossini

1934-01-01T23:59:59.000Z

328

E-Print Network 3.0 - aromatic hydrocarbons molecular Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

various hydrocarbons on monolithic hydrocarbon adsorber Dae Jung Kim,a Ji Man Kim,a Jae Eui Yie... ,b, Seong Gyu Seo,c and Sang-Chai Kim d a Department of Molecular Science and...

329

LiMnPO4 Nanoplate Grown via Solid-State Reaction in Molten Hydrocarbon...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LiMnPO4 Nanoplate Grown via Solid-State Reaction in Molten Hydrocarbon for Li-ion Battery Cathode. LiMnPO4 Nanoplate Grown via Solid-State Reaction in Molten Hydrocarbon for Li-ion...

330

Vibration Spectra of Hydrocarbon Molecules. II. Skeletal Frequencies in Certain Branched Paraffins  

Science Journals Connector (OSTI)

25 October 1949 research-article Vibration Spectra of Hydrocarbon Molecules. II...characteristic frequencies should be assigned as vibrations of the carbon skeleton of these structural...problem of the interpretation of the vibration spectra of hydrocarbons is considered...

1949-01-01T23:59:59.000Z

331

Environmental and Transport Effects on Core Measurements of Water Saturation, Salinity, Wettability, and Hydrocarbon Composition  

E-Print Network [OSTI]

and core surfacing operations can significantly alter the water saturation, salinity, hydrocarbon measurements of water saturation, salinity, hydrocarbon composition, and wettability are critical for accurateSPE 166154 Environmental and Transport Effects on Core Measurements of Water Saturation, Salinity

Torres-Verdín, Carlos

332

Light hydrocarbons in the surface water of the mid-Atlantic  

Science Journals Connector (OSTI)

During a cruise of RV Polarstern over the Atlantic in September/October 1988, C2?C4 hydrocarbons were measured in surface sea water. The ship passed through three different ocean ... at 8 N and 3 S. Hydrocarbon

C. Plass; R. Koppmann; J. Rudolph

1992-11-01T23:59:59.000Z

333

Method and apparatus for reducing cold-phase emissions by utilizing oxygen-enriched intake air  

DOE Patents [OSTI]

An oxygen-enriched air intake control system for an internal combustion engine includes air directing apparatus to control the air flow into the intake of the engine. During normal operation of the engine, ambient air flowing from an air filter of the engine flows through the air directing apparatus into the intake of the engine. In order to decrease the amount of carbon monoxide (CO) and hydrocarbon (HC) emissions that tend to be produced by the engine during a short period of time after the engine is started, the air directing apparatus diverts for a short period of time following the start up of the engine at least a portion of the ambient air from the air filter through a secondary path. The secondary path includes a selectively permeable membrane through which the diverted portion of the ambient air flows. The selectively permeable membrane separates nitrogen and oxygen from the diverted air so that oxygen enriched air containing from about 23% to 25% oxygen by volume is supplied to the intake of the engine.

Poola, Ramesh B. (Woodridge, IL); Sekar, Ramanujam R. (Naperville, IL); Stork, Kevin C. (Chicago, IL)

1997-01-01T23:59:59.000Z

334

Mitochondrial reactive oxygen species and cancer  

E-Print Network [OSTI]

Mitochondria produce reactive oxygen species (mROS) as a natural by-product of electron transport chain activity. While initial studies focused on the damaging effects of reactive oxygen species, a recent paradigm shift ...

Chandel, Navdeep S

335

Microbial oceanography of anoxic oxygen minimum zones  

E-Print Network [OSTI]

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum zones (OMZs) of the global ocean. They support diverse microbial communities that influence the nitrogen economy of the oceans, ...

Ulloa, Osvaldo

336

The Role of Oxygen in Coal Gasification  

E-Print Network [OSTI]

Air Products supplies oxygen to a number of coal gasification and partial oxidation facilities worldwide. At the high operating pressures of these processes, economics favor the use of 90% and higher oxygen purities. The effect of inerts...

Klosek, J.; Smith, A. R.; Solomon, J.

337

Oxygen reduction on platinum : an EIS study  

E-Print Network [OSTI]

The oxygen reduction reaction (ORR) on platinum over yttria-stabilized zirconia (YSZ) is examined via electrochemical impedance spectroscopy (EIS) for oxygen partial pressures between 10-4 and 1 atm and at temperatures ...

Golfinopoulos, Theodore

2009-01-01T23:59:59.000Z

338

Microchemical systems for singlet oxygen generation  

E-Print Network [OSTI]

Chemical Oxygen-Iodine Lasers (COIL) are a technology of interest for industrial and military audiences. COILs are flowing gas lasers where the gain medium of iodine atoms is collisionally pumped by singlet delta oxygen ...

Hill, Tyrone F. (Tyrone Frank), 1980-

2008-01-01T23:59:59.000Z

339

Imaging Oxygen Molecules Up Close | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Imaging Oxygen Molecules Up Close Imaging Oxygen Molecules Up Close ARRA-enabled upgrades enhance research capabilities STM images of the same TiO2(110) area upon O2 chemisorption...

340

Composite oxygen ion transport element  

SciTech Connect (OSTI)

A composite oxygen ion transport element that has a layered structure formed by a dense layer to transport oxygen ions and electrons and a porous support layer to provide mechanical support. The dense layer can be formed of a mixture of a mixed conductor, an ionic conductor, and a metal. The porous support layer can be fabricated from an oxide dispersion strengthened metal, a metal-reinforced intermetallic alloy, a boron-doped Mo.sub.5Si.sub.3-based intermetallic alloy or combinations thereof. The support layer can be provided with a network of non-interconnected pores and each of said pores communicates between opposite surfaces of said support layer. Such a support layer can be advantageously employed to reduce diffusion resistance in any type of element, including those using a different material makeup than that outlined above.

Chen, Jack C. (Getzville, NY); Besecker, Charles J. (Batavia, IL); Chen, Hancun (Williamsville, NY); Robinson, Earil T. (Mentor, OH)

2007-06-12T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Catalyst containing oxygen transport membrane  

SciTech Connect (OSTI)

A composite oxygen transport membrane having a dense layer, a porous support layer and an intermediate porous layer located between the dense layer and the porous support layer. Both the dense layer and the intermediate porous layer are formed from an ionic conductive material to conduct oxygen ions and an electrically conductive material to conduct electrons. The porous support layer has a high permeability, high porosity, and a high average pore diameter and the intermediate porous layer has a lower permeability and lower pore diameter than the porous support layer. Catalyst particles selected to promote oxidation of a combustible substance are located in the intermediate porous layer and in the porous support adjacent to the intermediate porous layer. The catalyst particles can be formed by wicking a solution of catalyst precursors through the porous support toward the intermediate porous layer.

Christie, Gervase Maxwell; Wilson, Jamie Robyn; van Hassel, Bart Antonie

2012-12-04T23:59:59.000Z

342

Respiration, photosynthesis, and oxygen isotope fractionation in ...  

Science Journals Connector (OSTI)

Jan 25, 1971 ... Respiration, photosynthesis, and oxygen isotope fractionation in oceanic surface water1. Peter M. Kroopnick. Department of Oceanography,.

2000-01-04T23:59:59.000Z

343

UPTAKE AND LOSS OF PETROLEUM HYDROCARBONS BY THE MUSSEL, MYTILUS EDULIS, IN LABORATORY EXPERIMENTS  

E-Print Network [OSTI]

UPTAKE AND LOSS OF PETROLEUM HYDROCARBONS BY THE MUSSEL, MYTILUS EDULIS, IN LABORATORY EXPERIMENTS ROBERT C. CLARK, JR., AND JOHN S. FINLEY' ABSTRACT Petroleum paraffin hydrocarbons (n-CI4H30 to n-C37H76 system that simulated tides. The mussels were exposed to levels of petroleum hydrocarbons from a surface

344

A 4D Synchrotron X-Ray-Tomography Study of the Formation of Hydrocarbon-  

E-Print Network [OSTI]

hydrocarbons and the growing production of hydrocarbons from low-permeability tight rocks. Quantitative models, University of Oslo, Idaho National Laboratory, and Institute for Energy Technology Summary Recovery of oil from oil shales and the natural primary migration of hydrocarbons are closely related processes

Mazzini, Adriano

345

The Interaction of Carcinogenic Hydrocarbons with Tissues VII. Fractionation of Mouse Skin Proteins  

Science Journals Connector (OSTI)

...Inferaction of Hydrocarbons with Tissues. VII...separation of the water- soluble proteins...in Chart 1, and water-soluble proteins...Interaction of Hydrocarbons with Tissues. VII...noncarcinogenic hydrocarbons could be detected...electrophoretic separation of water-soluble proteins...

G. Rodman Davenport; C. W. Abell; and Charles Heidelberger

1961-06-01T23:59:59.000Z

346

Male-derived cuticular hydrocarbons signal sperm competition intensity and affect ejaculate expenditure in crickets  

Science Journals Connector (OSTI)

...taxa has shown that cuticular hydrocarbons (CHCs), contact pheromones...They were supplied with water and fed cat food ad libitum...between-family variation in male hydrocarbon profiles (Thomas Simmons...variation within the blends of hydrocarbons in this experiment, male...

2009-01-01T23:59:59.000Z

347

Oxygen Detection via Nanoscale Optical Indicators  

E-Print Network [OSTI]

Oxygen Detection via Nanoscale Optical Indicators Ruby N. Ghosh Dept. of Physics Michigan State University East Lansing, MI, USA weekschr@msu.edu Abstract--Oxygen plays a ubiquitous role in terrestrial developed an optical technique for monitoring oxygen in both gas and liquid phases utilizing nanoscale metal

Ghosh, Ruby N.

348

8, 22252248, 2008 Detection of oxygen  

E-Print Network [OSTI]

ACPD 8, 2225­2248, 2008 Detection of oxygen emission related to spring bloom H. Yamagishi et al Chemistry and Physics Discussions Detection of regional scale sea-to-air oxygen emission related to spring bloom near Japan by using in-situ measurements of atmospheric oxygen/nitrogen ratio H. Yamagishi 1 , Y

Paris-Sud XI, Université de

349

Oxygen and Nitrogen Contamination During Arc Welding  

E-Print Network [OSTI]

) ) : ,- Oxygen and Nitrogen Contamination During Arc Welding T. W. Eagar Department of }faterials, mechanisms, and expected levels of oxygen and nitrogen contamination during gas tungsten arc, gas metal arc indicating the importance of dec9mposition of SiOz into silicon monoxide and oxygen are presented, indicating

Eagar, Thomas W.

350

Direct constraints on diffusion models from cosmic-ray positron data: Excluding the minimal model for dark matter searches  

Science Journals Connector (OSTI)

Galactic cosmic-ray (CR) transport parameters are usually constrained by the boron-to-carbon ratio. This procedure is generically plagued with degeneracies between the diffusion coefficient and the vertical extent of the Galactic magnetic halo. The latter is of paramount importance for indirect dark matter (DM) searches because it fixes the amount of DM annihilation or decay that contributes to the local antimatter CR flux. These degeneracies could be broken by using secondary radioactive species, but the current data still have large error bars, and this method is extremely sensitive to the very local interstellar medium properties. Here, we propose to use the low-energy CR positrons in the GeV range as another direct constraint on diffusion models. We show that the PAMELA data disfavor small diffusion halo (L?3??kpc) and large diffusion slope models and exclude the minimal configuration [Maurin etal. Astrophys. J. 555, 585 (2001); Donato etal. Phys. Rev. D 69, 063501 (2004)] widely used in the literature to bracket the uncertainties in the DM signal predictions. This is complementary to indirect constraints (diffuse radio and gamma-ray emissions) and has a strong impact on DM searches. Indeed, this makes the antiproton constraints more robust while enhancing the discovery/exclusion potential of current and future experiments, like AMS-02 and GAPS, especially in the antiproton and antideuteron channels.

Julien Lavalle; David Maurin; Antje Putze

2014-10-15T23:59:59.000Z

351

Dynamics of pulled desorption with effects of excluded volume interaction: The p-Laplacian diffusion equation and its exact solution  

E-Print Network [OSTI]

We analyze the dynamics of desorption of a polymer molecule which is pulled at one of its ends with force $f$, trying to desorb it. We assume a monomer to desorb when the pulling force on it exceeds a critical value $f_{c}$. We formulate an equation for the average position of the $n^{th}$ monomer, which takes into account excluded volume interaction through the blob-picture of a polymer under external constraints. The approach leads to a diffusion equation with a $p$-Laplacian for the propagation of the stretching along the chain. This has to be solved subject to a moving boundary condition. Interestingly, within this approach, the problem can be solved exactly in the trumpet, stem-flower and stem regimes. In the trumpet regime, we get $\\tau=\\tau_{0}n_d^{2}$ where $n_d$ is the number of monomers that have desorbed at the time $\\tau$. $\\tau_{0}$ is known only numerically, but for $f$ close to $f_{c}$, it is found to be $\\tau_{0}\\sim f_c/(f^{2/3}-f_{c}^{2/3})$. If one used simple Rouse dynamics, this result changes to {\

K. L. Sebastian; V. G. Rostiashvili; T. A. Vilgis

2011-08-31T23:59:59.000Z

352

Direct constraints on diffusion models from cosmic-ray positron data: Excluding the Minimal model for dark matter searches  

E-Print Network [OSTI]

Galactic Cosmic-ray (CR) transport parameters are usually constrained by the boron-to-carbon ratio. This procedure is generically plagued with degeneracies between the diffusion coefficient and the vertical extent of the Galactic magnetic halo. The latter is of paramount importance for indirect dark matter (DM) searches, because it fixes the amount of DM annihilation or decay that contributes to the local antimatter CR flux. These degeneracies could be broken by using secondary radioactive species, but the current data still have large error bars, and this method is extremely sensitive to the very local interstellar medium (ISM) properties. Here, we propose to use the low-energy CR positrons in the GeV range as another direct constraint on diffusion models. We show that the PAMELA data disfavor small diffusion halo ($L\\lesssim 3$ kpc) and large diffusion slope models, and exclude the minimal ({\\em min}) configuration (Maurin et al. 2001, Donato et al. 2004) widely used in the literature to bracket the uncertainties in the DM signal predictions. This is complementary to indirect constraints (diffuse radio and gamma-ray emissions) and has strong impact on DM searches. Indeed this makes the antiproton constraints more robust while enhancing the discovery/exclusion potential of current and future experiments, like AMS-02 and GAPS, especially in the antiproton and antideuteron channels.

Julien Lavalle; David Maurin; Antje Putze

2015-01-22T23:59:59.000Z

353

The Mechanisms of Oxygen Reduction and Evolution Reactions in...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries. The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous...

354

Oxygen consumption of bovine granulosa cells in vitro.  

E-Print Network [OSTI]

??The oxygen consumption rate of granulosa cells is considered to be a key determinant of oocyte oxygenation in follicles. The oxygen status of the oocyte (more)

Li, Dongxing

2012-01-01T23:59:59.000Z

355

Thickness Dependency of Thin Film Samaria Doped Ceria for Oxygen...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dependency of Thin Film Samaria Doped Ceria for Oxygen Sensing . Thickness Dependency of Thin Film Samaria Doped Ceria for Oxygen Sensing . Abstract: High temperature oxygen...

356

Speciation and Quantitation of Hydrocarbons in Gasoline Engine Exhaust  

Science Journals Connector (OSTI)

......laboratory engines or reactors. In this paper we...computer technology have advanced to the state where...2-1 m), and the heavy (C5 -C1 2 ) hydrocarbons...PLOT column with water or heavy hy drocarbons...technology to prevent water vapor from condensing...computer technology have advanced to the state where......

Keith L. Olson; Robert M. Sinkevitch; Thompson M. Sloane

1992-12-01T23:59:59.000Z

357

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust  

Science Journals Connector (OSTI)

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust ... The semivolatile mass fraction of diesel exhaust particles was studied using size-resolved on-line techniques (DMA-ELPI; TDMA-ELPI). ... The measured size resolved values of mass transfer imply that condensation, or diffusion-limited mass transfer, plays a major role in driving the volatile matter to the diesel exhaust particles. ...

Jyrki Ristimki; Kati Vaaraslahti; Maija Lappi; Jorma Keskinen

2007-08-10T23:59:59.000Z

358

High Levels of Carcinogenic Polycyclic Aromatic Hydrocarbons in Mate Drinks  

Science Journals Connector (OSTI)

...leaves and/or exposure to combustion products or formation of ash...analysis of the mainstream smoke chemistry of samples of the U.S. cigarette...comparison of the tumors induced by coal tar and benzo[a]pyrene...Spectrometry Ilex paraguariensis chemistry Polycyclic Hydrocarbons, Aromatic...

Farin Kamangar; Michele M. Schantz; Christian C. Abnet; Renato B. Fagundes; and Sanford M. Dawsey

2008-05-01T23:59:59.000Z

359

Seismic Analysis Using Wavelet Transform for Hydrocarbon Detection  

E-Print Network [OSTI]

data quality is good. This technique can be directly applied to the processed 2D and 3 D pre-stack/post-stack data sets (1) to detect hydrocarbon zones in both clastic and carbonate reservoirs by analyzing the low frequency signals in the decomposed...

Cai, Rui

2012-02-14T23:59:59.000Z

360

Energy Conservation Opportunities in Hydrocarbon Resin Manufacturing Facilities  

E-Print Network [OSTI]

"The results of a plant-wide assessment of the manufacturing facilities of Neville Chemical Company, a manufacturer of hydrocarbon resins will be presented in this paper. The project was co-funded by US Department of Energy under its Plant...

Ganji, A. R.; Hackett, B.; Chow, S.; Lonergan, R.; Wimer, J.

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Fundamental spectroscopic studies of carbenes and hydrocarbon radicals  

SciTech Connect (OSTI)

Highly reactive carbenes and carbon-chain radicals are studied at millimeter wavelengths by observing their rotational spectra. The purpose is to provide definitive spectroscopic identification, accurate spectroscopic constants in the lowest vibrational states, and reliable structures of the key intermediates in reactions leading to aromatic hydrocarbons and soot particles in combustion.

Gottlieb, C.A.; Thaddeus, P. [Harvard Univ., Cambridge, MA (United States)

1993-12-01T23:59:59.000Z

362

Climatically driven emissions of hydrocarbons from marine sediments during deglaciation  

Science Journals Connector (OSTI)

...destabilizing hydrates shown in the lighter...destabilization of methane hydrates and release of...in SBC suggest gas emissions during...investigate the sand-sized fraction...the presence of sand layers (23...hydrocarbons and methane hydrate, which is widely...4) (24). Gas hydrates commonly...

T. M. Hill; J. P. Kennett; D. L. Valentine; Z. Yang; C. M. Reddy; R. K. Nelson; R. J. Behl; C. Robert; L. Beaufort

2006-01-01T23:59:59.000Z

363

Hydrocarbons Heterogeneous Pyrolysis: Experiments and Modeling for Scramjet Thermal Management  

E-Print Network [OSTI]

1 Hydrocarbons Heterogeneous Pyrolysis: Experiments and Modeling for Scramjet Thermal Management : United States (2008)" #12;2 I. Introduction One of the main issues of the development of scramjet, an air to the endothermicity of its thermal decomposition. Because of the large heat load found in a scramjet, engine

Paris-Sud XI, Université de

364

Hydrocarbon saturation determination using acoustic velocities obtained through casing  

DOE Patents [OSTI]

Compressional and shear velocities of earth formations are measured through casing. The determined compressional and shear velocities are used in a two component mixing model to provides improved quantitative values for the solid, the dry frame, and the pore compressibility. These are used in determination of hydrocarbon saturation.

Moos, Daniel (Houston, TX)

2010-03-09T23:59:59.000Z

365

Increased olefins production via recovery of refinery gas hydrocarbons  

SciTech Connect (OSTI)

In the process of catalytically cracking heavy petroleum fractions to make gasoline and light fuel oil, by-product waste gases are also generated. The waste gases, normally used as fuel, are themselves rich sources of ethylene, propylene and other light hydrocarbons which can be recovered inexpensively via a cryogenic dephlegmator process. This gas separation technique is exploited in a system, in operation since spring of 1987, which reclaims C/sub 2/+ hydrocarbons from a refinery gas. The reclamation process bolsters production in a nearby ethylene plant. Causing no disruption of ethylene plant operations, the cryogenic hydrocarbon recovery system functions smoothly with existing systems. The dephlegmation unit operation melds distillation and heat transfer processes in a single easily-controlled step which boosts the hydrocarbon purity and recovery above the levels profitably achievable with conventional cryogenic separation techniques. Very attractive operating economics follow from high purity, high recovery, and high energy efficiency. This paper discusses process concepts, economic benefits, plant operation, and early performance results.

Bernhard, D.P.; Rowles, H.C.; Moss, J.A.; Pickering, J.L. Jr.

1988-01-01T23:59:59.000Z

366

THERMOCATALYTIC CO2-FREE PRODUCTION OF HYDROGEN FROM HYDROCARBON FUELS  

E-Print Network [OSTI]

THERMOCATALYTIC CO2- FREE PRODUCTION OF HYDROGEN FROM HYDROCARBON FUELS N. Muradov Florida Solar Energy Center 1679 Clearlake Road, Cocoa, Florida 32922 tel. 321-638-1448, fax. 321-638-1010, muradov (except for the start-up operation). This results in the following advantages: (1) no CO/CO2 byproducts

367

Biodegradation of total petroleum hydrocarbon (TPH) in Jordanian petroleum sludge  

Science Journals Connector (OSTI)

Bioremediation, or the use of micro-organisms to decontaminate soil or groundwater, is being increasingly seen as an effective, environment-friendly treatment for oil-contaminated sites. In this study, the results are presented concerning a laboratory screening of several natural bacterial consortia and laboratory tests to establish the performance in degradation of hydrocarbons contained in oily sludge from the Jordan Oil Refinery Plant. As a result of the laboratory screening, 18 isolates were selected and grouped into two main clusters; cluster 1 containing 12 isolates grown at 43°C, and cluster 2 containing six isolates grown at 37°C. Three natural bacterial consortia with ability to degrade total petroleum hydrocarbons (TPH) were prepared from these isolates. Experiments were conducted in Erlenmeyer flasks under aerobic conditions, with TPH removal percentage varying from 5.9% to 25.1%, depending upon consortia type and concentration. Consortia 7B and 13B exhibited the highest TPH removal percentages of 25% and 23%, respectively before nutrient addition. TPH removal rate was enhanced after addition of nutrients to incubated flasks. The highest TPH reduction (37%) was estimated after addition of a combination of nitrogen, phosphorus and sulphur to consortia 7B. This is the first report concerning biological treatment of total petroleum hydrocarbon by bacteria isolated from the oil refinery plant, where it lay the ground for full integrated studies recommended for hydrocarbon degradation that assist in solving sludge problems.

Bassam Mrayyan; Mohammad Battikhi

2004-01-01T23:59:59.000Z

368

Hydrocarbons in rift basins: the role of stratigraphy  

Science Journals Connector (OSTI)

...succession that causes the shales to reach thermal maturity and generate hydrocarbons. Simple...T. J. 1988 Rift basins of interior Sudan--petroleum exploration and discovery...basins? Is that what we could call the thermal subsidence phase? J. J. Lambiase...

1999-01-01T23:59:59.000Z

369

Application of Resource-Ratio Theory to Hydrocarbon Biodegradation  

Science Journals Connector (OSTI)

Application of Resource-Ratio Theory to Hydrocarbon Biodegradation ... We suggest that the procedures outlined here can be used to help guide practical decisions about the nutrients that are most likely to be growth-limiting and help define the subsequent nutrient application rates. ...

Val H. Smith; David W. Graham; Dale D. Cleland

1998-09-12T23:59:59.000Z

370

FROM INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS AND ICE TO ASTROBIOLOGY  

E-Print Network [OSTI]

photolysis of these ices produces a host of new compounds, some of which show intriguing prebiotic behavior1 FROM INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBONS AND ICE TO ASTROBIOLOGY LOUIS J. ALLAMANDOLA, the concept of ices in dense molecular clouds ignored, and the notion of large, abundant, gas phase, carbon

371

Standard test method for heat of combustion of hydrocarbon fuels by bomb calorimeter (high-precision method)  

SciTech Connect (OSTI)

This method covers the determination of the heat of combustion of hydrocarbon fuels. It is designed specifically for use with aviation turbine fuels when the permissible difference between duplicate determinations is of the order of 0.1%. It can be used for a wide range of volatile and nonvolatile materials where slightly greater differences in precision can be tolerated. The heat of combustion is determined by burning a weighed sample in an oxygen-bomb calorimeter under controlled conditions. The temperature is measured by means of a platinum resistance thermometer. The heat of combustion is calculated from temperature observations before, during, and after combustion, with proper allowance for thermochemical and heat-transfer corrections. Either isothermal or adiabatic calorimeters may be used. The heat of combustion is a measure of the energy available from a fuel. A knowledge of this value is essential when considering the thermal efficiency of equipment for producing either power or heat.

Not Available

1980-01-01T23:59:59.000Z

372

Natural attenuation of fuel hydrocarbon contaminants: Hydraulic conductivity dependency of biodegradation rates in a field case study  

SciTech Connect (OSTI)

Two biodegradation models are developed to represent natural attenuation of fuel-hydrocarbon contaminants as observed in a comprehensive natural-gradient tracer test in a heterogeneous aquifer on the Columbus Air Force Base in Mississippi. The first, a first-order mass loss model, describes the irreversible losses of BTEX and its individual components, i.e., benzene (B), toluene (T), ethyl benzene (E), and xylene (X). The second, a reactive pathway model, describes sequential degradation pathways for BTEX utilizing multiple electron acceptors, including oxygen, nitrate, iron and sulfate, and via methanogenesis. The heterogeneous aquifer is represented by multiple hydraulic conductivity (K) zones delineated on the basis of numerous flowmeter K measurements. A direct propagation artificial neural network (DPN) is used as an inverse modeling tool to estimate the biodegradation rate constants associated with each of the K zones. In both the mass loss model and the reactive pathway model, the biodegradation rate constants show an increasing trend with the hydraulic conductivity. The finding of correlation between biodegradation kinetics and hydraulic conductivity distributions is of general interest and relevance to characterization and modeling of natural attenuation of hydrocarbons in other petroleum-product contaminated sites.

Lu, Guoping; Zheng, Chunmiao

2003-07-15T23:59:59.000Z

373

Natural Attenuation of Fuel Hydrocarbon Contaminants: Correlation of Biodegradation with Hydraulic Conductivity in a Field Case Study  

SciTech Connect (OSTI)

Two biodegradation models are developed to represent natural attenuation of fuel-hydrocarbon contaminants as observed in a comprehensive natural-gradient tracer test in a heterogeneous aquifer on the Columbus Air Force Base in Mississippi, USA. The first, a first-order mass loss model, describes the irreversible losses of BTEX and its individual components, i.e., benzene (B), toluene (T), ethyl benzene (E), and xylene (X). The second, a reactive pathway model, describes sequential degradation pathways for BTEX utilizing multiple electron acceptors, including oxygen, nitrate, iron and sulfate, and via methanogenesis. The heterogeneous aquifer is represented by multiple hydraulic conductivity (K) zones delineated on the basis of numerous flowmeter K measurements. A direct propagation artificial neural network (DPN) is used as an inverse modeling tool to estimate the biodegradation rate constants associated with each of the K zones. In both the mass loss model and the reactive pathway model, the biodegradation rate constants show an increasing trend with the hydraulic conductivity. The finding of correlation between biodegradation kinetics and hydraulic conductivity distributions is of general interest and relevance to characterization and modeling of natural attenuation of hydrocarbons in other petroleum-product contaminated sites.

Lu, Guoping; Zheng, Chunmiao

2003-10-15T23:59:59.000Z

374

Singlet Oxygen Singlet oxygen generation and detection are growing fields with applications in such areas as  

E-Print Network [OSTI]

Singlet Oxygen Singlet oxygen generation and detection are growing fields with applications in such areas as cancer treatment, photosensitized oxidations, and biomolecular degradation. Ground state oxygen state of an oxygen molecule is a singlet state, which can readily react with other singlet molecules

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

375

Oxygen permeation in bismuth-based materials part I: Sintering and oxygen permeation fluxes  

E-Print Network [OSTI]

1 Oxygen permeation in bismuth-based materials part I: Sintering and oxygen permeation fluxes E;2 Abstract Oxygen permeation measurements were performed on two layered bismuth based oxide ceramics. Oxygen permeability for these systems was compared to permeability of the cubic fluorite type structure

Paris-Sud XI, Université de

376

Reclamation and groundwater remediation at a hydrocarbon site in Alaska  

SciTech Connect (OSTI)

As part of a joint hydrocarbon cleanup project between Unocal and Marathon, we have initiated the use of constructed wetlands for restoration of the 40-acre Poppy Lane gravel pit located near Kenai, Alaska. Gravel excavated from this site was used to construct roads and drilling pads in the 1960`-70`s. During this period it was also used as a refuse dump for waste from the Kenai gas field and from local residents. The bulk wastes were removed and pockets of oily sand were removed, treated and returned to a stockpile on the site. This left the site with residual pockets of hydrocarbon-impacted sand (<1000 TPH) plus traces of hydrocarbon contamination in the uppermost shallow groundwater flowing through the outwash gravels. The final part of the cleanup will be land restoration and bioremediation of the final traces of hydrocarbons, which are predominantly diesel-range. High resolution gas chromatography analysis indicated that common plants already growing on the site (willow, cottonwood, and alder) did not concentrate diesel-range petroleum hydrocarbons in their foliage when growing in soils containing these contaminants. As part of the planned restoration and shallow groundwater remediation, two 1/3 acre test plots were constructed to promote in-situ biodegradation processes. In spring 1995, the first test, a tree root-barrier plot, was planted with dormant cuttings of four native wetland tree and shrub species, which were planted to depths up to five feet. Alder and elderberry did not succeed under any conditions, nor did any species planted in standing water. For cottonwood and willow species, approximately one half of each rooted and survived. When the water table dropped the second year, the willow cuttings rooted deeper in the vadose zone, while cottonwood did not. As a result of these findings, a tree root-barrier wetland is not considered to be a viable option for groundwater treatment at Poppy Lane.

Ririe, G.T. [Unocal, Brea, CA (United States); Drake, L.D. [Univ. of Iowa, Iowa City, IA (United States); Olson, S.S. [Marathon Oil, Tyler, TX (United States)

1997-12-31T23:59:59.000Z

377

Apparatus and method for simultaneous recovery of hydrogen from water and from hydrocarbons  

DOE Patents [OSTI]

Apparatus and method for simultaneous recovery of hydrogen from water and from hydrocarbon feed material. The feed material is caused to flow over a heated catalyst which fosters the water-gas shift reaction (H.sub.2 O+COH.sub.2 +CO.sub.2) and the methane steam reforming reaction (CH.sub.4 +H.sub.2 O3 H.sub.2 +CO). Both of these reactions proceed only to partial completion. However, by use of a Pd/Ag membrane which is exclusively permeable to hydrogen isotopes in the vicinity of the above reactions and by maintaining a vacuum on the permeate side of the membrane, product hydrogen isotopes are removed and the reactions are caused to proceed further toward completion. A two-stage palladium membrane reactor was tested with a feed composition of 28% CQ.sub.4, 35% Q.sub.2 O (where Q=H, D, or T), and 31% Ar in 31 hours of continuous operation during which 4.5 g of tritium were processed. Decontamination factors were found to increase with decreasing inlet rate. The first stage was observed to have a decontamination factor of approximately 200, while the second stage had a decontamination factor of 2.9.times.10.sup.6. The overall decontamination factor was 5.8.times.10.sup.8. When a Pt/.alpha.-Al.sub.2 O.sub.3 catalyst is employed, decoking could be performed without catalyst degradation. However, by adjusting the carbon to oxygen ratio of the feed material with the addition of oxygen, coking could be altogether avoided.

Willms, R. Scott (Los Alamos, NM); Birdsell, Stephen A. (Los Alamos, NM)

2000-01-01T23:59:59.000Z

378

Process for using alkyl substituted C8-C10 aromatic hydrocarbons as preferential physical solvents for selective processing of hydrocarbon gas streams  

SciTech Connect (OSTI)

This patent describes a process for the removal of hydrocarbon gas liquids, comprising hydrocarbons heavier than methane, from a hydrocarbon gas stream. The improvement consists of selectively extracting the hydrocarbon gas liquids from the hydrocarbon gas stream with a preferential physical solvent which provides selective capability for recovery according to the selected degree of (a) ethane in amounts ranging from 2-98%, (b) propane in amounts ranging from 2-99%, (c) butane in amounts ranging from 2-100%, or (d) pentanes and higher molecular weight hydrocarbons in amounts ranging up to 100% which comprises: A. selectively extracting and stripping the hydrocarbon gas stream with the physical solvent to produce a residue hydrocarbon gas stream of pipeline specifications and a rich solvent stream containing ethane and heavier hydrocarbon components, the preferential physical solvent being: (1) rich in C/sub 8/-C/sub 10/ aromatic compounds having methyl, ethyl, or propyl aliphatic groups and (2) selective for ethane and heavier hydrocarbon components of the gas stream such that: (a) the relative volatility of methane over ethane is at least 5.0 and the hydrocarbon loading capacity, defined as solubility of ethane in solvent, is at least 0.25 standard cubic feet of ethane per gallon of solvent, or (b) the preferential factor determined by the multiplication of relative volatility of methane over ethane by the solubility of ethane in solvent, in standard cubic feet of ethane per gallon of solvent, of at least 1.25; and B. distilling the rich solvent to produce the hydrocarbon gas liquids and the physical solvent.

Mehra, Y.R.

1987-09-08T23:59:59.000Z

379

Mitochondrial DNA Copy Number and Exposure to Polycyclic Aromatic Hydrocarbons  

Science Journals Connector (OSTI)

...airborne threshold limit value of coal tar pitch volatiles (i.e...genotoxic carcinogens produced by coal combustion emissions (for a...exclude that different socio-economic statuses might have contributed...of individuals with wood- or coal-based heating at home. ePAH...

Sofia Pavanello; Laura Dioni; Mirjam Hoxha; Ugo Fedeli; Danuta Mielzynska-vach; and Andrea A. Baccarelli

2013-10-01T23:59:59.000Z

380

Interaction of Carcinogenic Hydrocarbons with Tissues: VIII. Binding of Tritium-labeled Hydrocarbons to the Soluble Proteins of Mouse Skin  

Science Journals Connector (OSTI)

...treated as described in "Materials and Methods." A demonstration...of the unbound radio active hydrocarbon was removed...migrated toward the cathode, a neutral in dicator...pro teins toward the cathode was affected by electro...dermis as described in "Materials and Methods." The...

C. W. Abell and Charles Heidelberger

1962-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Ion-exchanged pillared clays: A new class of catalysts for selective catalytic reduction of NO by hydrocarbons and by ammonia  

SciTech Connect (OSTI)

Selective catalytic reduction (SCR) of NO by NH{sub 3} is presently performed with vanadia-based catalysts for flue gas applications. Hydrocarbons would be the preferred reducing agents over NH{sub 3} because of the practical problems associated with the use of NH{sub 3} (i.e., handling and slippage through the reactor). SCR of NO by hydrocarbons can also find important applications for lean-burn (i.e., O{sub 2}-rich) gasoline and diesel engines where the noble-metal three-way catalysts are not effective in the presence of excess oxygen. Pillared interlayered clays (PILCs) have been studied extensively for a number of catalyzed reactions. We have found high activities of PILCs for SCR of NO by NH{sub 3} (26.28). Pillared clays have considerable Bronsted acidity (27, 28), and the protons can be exchanged with metal cations. The Bronsted acidity of TiO{sub 2}-PILC, in particular, remains high after heat treatment at temperatures as high as 400{degrees}C (27-29). In this note, we report first results on the activities of cation-exchanged pillared clays for SCR of NO by both hydrocarbon and NH{sub 3}. 37 refs., 3 figs.

NONE

1995-09-01T23:59:59.000Z

382

Biodegradation of monoaromatic hydrocarbons by aquifer microorganisms using oxygen, nitrate, or nitrous oxide as the terminal electron acceptor.  

Science Journals Connector (OSTI)

...I. Mayfield. 1986. Remediation of gasoline-contaminated...Aerobic denitrification as an innovative method for in-situ biological remediation of contaminated sub- surface...underground storage tanks: remediation with emphasis on in situ...

S R Hutchins

1991-08-01T23:59:59.000Z

383

Muon Capture in Oxygen-16  

Science Journals Connector (OSTI)

The muon capture rate in oxygen is used as a means for measuring the induced pseudoscalar coupling constant (CP) of weak interactions. The capture rate between the JP=0+ ground state of O16 and the 0-, 1-, 2-, and 3- states of N16 are calculated as a function of CP with different nuclear models. Using the experimental values of the transition rates, we then determine CP. We find that the transition rate, and therefore CP, depends strongly on the nuclear model. We conclude that 5

Vincent Gillet and David A. Jenkins

1965-10-11T23:59:59.000Z

384

(Data in thousand metric tons of silicon content unless otherwise noted) Domestic Production and Use: Estimated value of silicon alloys and metal (excluding semiconductor-and solar-  

E-Print Network [OSTI]

Production and Use: Estimated value of silicon alloys and metal (excluding semiconductor- and solar- grade and aluminum alloys and the chemical industry. The semiconductor and solar industries, which manufacture chips%; Venezuela, 15%; Canada, 8%; and other, 8%. Silicon metal: Brazil, 38%; South Africa, 24%; Canada, 16

385

Apparatus for removing hydrocarbon contaminants from solid materials  

DOE Patents [OSTI]

A system for removing hydrocarbons from solid materials. Contaminated solids are combined with a solvent (preferably terpene based) to produce a mixture. The mixture is washed with water to generate a purified solid product (which is removed from the system) and a drainage product. The drainage product is separated into a first fraction (consisting mostly of contaminated solvent) and a second fraction (containing solids and water). The first fraction is separated into a third fraction (consisting mostly of contaminated solvent) and a fourth fraction (containing residual solids and water). The fourth fraction is combined with the second fraction to produce a sludge which is separated into a fifth fraction (containing water which is ultimately reused) and a sixth fraction (containing solids). The third fraction is then separated into a seventh fraction (consisting of recovered solvent which is ultimately reused) and an eighth fraction (containing hydrocarbon waste).

Bala, Gregory A. (Idaho Falls, ID); Thomas, Charles P. (Idaho Falls, ID)

1996-01-01T23:59:59.000Z

386

Method for removing hydrocarbon contaminants from solid materials  

DOE Patents [OSTI]

A system for removing hydrocarbons from solid materials. Contaminated solids are combined with a solvent (preferably terpene based) to produce a mixture. The mixture is washed with water to generate a purified solid product (which is removed from the system) and a drainage product. The drainage product is separated into a first fraction (consisting mostly of contaminated solvent) and a second fraction (containing solids and water). The first fraction is separated into a third fraction (consisting mostly of contaminated solvent) and a fourth fraction (containing residual solids and water). The fourth fraction is combined with the second fraction to produce a sludge which is separated into a fifth fraction (containing water which is ultimately reused) and a sixth fraction (containing solids). The third fraction is then separated into a seventh fraction (consisting of recovered solvent which is ultimately reused) and an eighth fraction (containing hydrocarbon waste).

Bala, Gregory A. (Idaho Falls, ID); Thomas, Charles P. (Idaho Falls, ID)

1995-01-01T23:59:59.000Z

387

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

SciTech Connect (OSTI)

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This technology pathway case investigates the biological conversion of biomass derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline, diesel and jet range hydrocarbon blendstocks.

Davis, Ryan; Biddy, Mary J.; Tan, Eric; Tao, Ling; Jones, Susanne B.

2013-03-31T23:59:59.000Z

388

Faults as potential hydrocarbon barriers, Arroyo Grande, California  

E-Print Network [OSTI]

OPTICALMICROSCOPY. Composition. Grain Size Characteristics Deformation Fluorescence Observations . Microprobe Observations. CAPILLARY PRESSURE. Sample Preparation. Test Procedures. Interpretation of the Mercury Injection Capillary Pressure Curve... rim of hydrocarbons seen on the grains. 41 , , 42 25 Photomicrograph of one of the microcracks that contains oil, 43 26 Microprobe image of the zone of quartz cement seen in the quarry, 27 Mercury injection capillary pressure apparatus, 45 48...

Switek, Daniel Paul

2012-06-07T23:59:59.000Z

389

THE INFRARED SPECTROSCOPY OF NEUTRAL POLYCYCLIC AROMATIC HYDROCARBON CLUSTERS  

SciTech Connect (OSTI)

The mid-infrared spectra of neutral homogeneous polycyclic aromatic hydrocarbon (PAH) clusters have been computed using density functional theory including an empirical correction for dispersion. The C-H out-of-plane bending modes are redshifted for all the clusters considered in this work. The magnitude of the redshift and the peak broadening are dependent on PAH size, shape, and on the PAH arrangement in the cluster.

Ricca, Alessandra [Carl Sagan Center, SETI Institute, 189 Bernardo Avenue, Suite 100, Mountain View, CA 94043 (United States); Bauschlicher, Charles W. Jr. [Entry Systems and Technology Division, Mail Stop 230-3, NASA Ames Research Center, Moffett Field, CA 94035 (United States); Allamandola, Louis J., E-mail: Alessandra.Ricca-1@nasa.gov, E-mail: Charles.W.Bauschlicher@nasa.gov [Space Science Division, Mail Stop 245-6, NASA Ames Research Center, Moffett Field, CA 94035 (United States)

2013-10-10T23:59:59.000Z

390

Method and apparatus for production of subsea hydrocarbon formations  

DOE Patents [OSTI]

A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible catenary production riser and expert riser bundles, and serviced by separate catenary pipe bundles. Piles are secured to the seabed, each pile assembly being pivotally connected to a lower rigid tendon, which is in turn connected to tendons arranged about the periphery of the interconnected cylindrical tanks.

Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

1992-01-01T23:59:59.000Z

391

Method and apparatus for production of subsea hydrocarbon formations  

DOE Patents [OSTI]

A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible catenary production riser and export riser bundles, and serviced by separate catenary pipe bundles. Piles are secured to the seabed, each pile assembly being pivotally connected to a lower rigid tendon, which is in turn connected to tendons arranged about the periphery of the interconnected cylindrical tanks.

Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

1994-01-01T23:59:59.000Z

392

Petroleum hydrocarbon-degrading bacteria in the Galveston Bay system  

E-Print Network [OSTI]

PETROLEUM HYDRQCARBOiV-DEGRADING BACTERIA IN THE GALVESTON BAY SYSTEM A Thesis by STEVEN JAMES SCHROPP Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIFNCE... December 1979 Major Subject: Biology PETROLEUM HYDROCARBON-DEGRADING BACTERIA IN THE GALVESTON BAY SYSTEM A Thesis by STEVEN JAMES SCHROPP Approved as to style and content by: (Co-Chairman of Committee) '( ~CA. ( -Chairman of Committee) (Head...

Schropp, Steven James

1979-01-01T23:59:59.000Z

393

Production of valuable hydrocarbons by flash pyrolysis of oil shale  

DOE Patents [OSTI]

A process for the production of gas and liquid hydrocarbons from particulated oil shale by reaction with a pyrolysis gas at a temperature of from about 700/sup 0/C to about 1100/sup 0/C, at a pressure of from about 400 psi to about 600 psi, for a period of about 0.2 second to about 20 seconds. Such a pyrolysis gas includes methane, helium, or hydrogen. 3 figs., 3 tabs.

Steinberg, M.; Fallon, P.T.

1985-04-01T23:59:59.000Z

394

Direct production of fractionated and upgraded hydrocarbon fuels from biomass  

SciTech Connect (OSTI)

Multistage processing of biomass to produce at least two separate fungible fuel streams, one dominated by gasoline boiling-point range liquids and the other by diesel boiling-point range liquids. The processing involves hydrotreating the biomass to produce a hydrotreatment product including a deoxygenated hydrocarbon product of gasoline and diesel boiling materials, followed by separating each of the gasoline and diesel boiling materials from the hydrotreatment product and each other.

Felix, Larry G.; Linck, Martin B.; Marker, Terry L.; Roberts, Michael J.

2014-08-26T23:59:59.000Z

395

Catalyst and process for steam-reforming of hydrocarbons  

SciTech Connect (OSTI)

An improved catalyst and an improved process for use of the catalyst in the steam-hydrocarbon reforming reaction are disclosed. The catalyst comprises a group VIII metal on a cylindrical ceramic support consisting essentially of alpha alumina and having a plurality of gas passages extending axially therethrough. These supported catalysts display a higher geometric surface area and a lower pressure drop than do standard rings.

Atwood, K.; Merriam, J.S.; Wright, J.H.

1980-11-11T23:59:59.000Z

396

Polycyclic aromatic hydrocarbon distributions in Mississippi Fan sediments  

E-Print Network [OSTI]

. Sandberg, B. A. , University of Colorado Chairman of Advisory Committee: Dr. James M. Brooks Polycyclic aromatic hydrocarbon (PAH) distributions in Upper Pleistocene sediments of the Mississippi Fan and two intraslope basins in the Gulf of Mexico... chemistries is separate phase migration driven by hydrodynamic flow upward along fault planes. The same variables at intraslope basin sites are highly altered, possibly due to extensive gravity slump faulting. High- performance liquid chromatography...

Sandberg, William Allan

2012-06-07T23:59:59.000Z

397

Aerobic microorganism for the degradation of chlorinated aliphatic hydrocarbons  

DOE Patents [OSTI]

A chlorinated aliphatic hydrocarbon-degrading microorganism, having American Type Culture Collection accession numbers ATCC 53570 and 53571, in a biologically pure culture aseptically collected from a deep subsurface habitat and enhanced, mineralizes trichloroethylene and tetrachloroethylene to HCl, H.sub.2 O and Co.sub.2 under aerobic conditions stimulated by methane, acetate, methanol, tryptone-yeast extract, propane and propane-methane.

Fliermans, Carl B. (Augusta, GA)

1989-01-01T23:59:59.000Z

398

Irregular spacing of heat sources for treating hydrocarbon containing formations  

DOE Patents [OSTI]

A method for treating a hydrocarbon containing formation includes providing heat input to a first section of the formation from one or more heat sources located in the first section. Fluids are produced from the first section through a production well located at or near the center of the first section. The heat sources are configured such that the average heat input per volume of formation in the first section increases with distance from the production well.

Miller, David Scott (Katy, TX); Uwechue, Uzo Philip (Houston, TX)

2012-06-12T23:59:59.000Z

399

Device and method for separating oxygen isotopes  

DOE Patents [OSTI]

A device and method for separating oxygen isotopes with an ArF laser which produces coherent radiation at approximately 193 nm. The output of the ArF laser is filtered in natural air and applied to an irradiation cell where it preferentially photodissociates molecules of oxygen gas containing .sup.17 O or .sup.18 O oxygen nuclides. A scavenger such as O.sub.2, CO or ethylene is used to collect the preferentially dissociated oxygen atoms and recycled to produce isotopically enriched molecular oxygen gas. Other embodiments utilize an ArF laser which is narrowly tuned with a prism or diffraction grating to preferentially photodissociate desired isotopes. Similarly, desired mixtures of isotopic gas can be used as a filter to photodissociate enriched preselected isotopes of oxygen.

Rockwood, Stephen D. (Los Alamos, NM); Sander, Robert K. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

400

A survey of alternative oxygen production technologies  

Science Journals Connector (OSTI)

Utilization of the Martian atmosphere for the production of fuel and oxygen has been extensively studied. The baseline fuel production process is a Sabatier reactor which produces methane and water from carbon dioxide and hydrogen. The oxygen produced from the electrolysis of the water is only half of that needed for methane-based rocket propellant and additional oxygen is needed for breathing air fuel cells and other energy sources. Zirconia electrolysis cells for the direct reduction of CO 2 are being developed as an alternative means of producing oxygen but present many challenges for a large-scale oxygen production system. The very high operating temperatures and fragile nature of the cells coupled with fairly high operating voltages leave room for improvement. This paper will survey alternative oxygen production technologies present data on operating characteristics materials of construction and some preliminary laboratory results on attempts to implement each.

Dale E. Lueck; Clyde F. Parrish; William J. Buttner; Jan M. Surma

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Federal Environmental Regulations Impacting Hydrocarbon Exploration, Drilling, and Production Operations  

SciTech Connect (OSTI)

Waste handling and disposal from hydrocarbon exploration, drilling, and production are regulated by the US Environmental Protection Agency (EPA) through federal and state regulations and/or through implementation of federal regulations. Some wastes generated in these operations are exempt under the Resource Conservation and Recovery Act (RCRA) but are not exempt under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Superfund Amendments and Reauthorization Act (SARA), and other federal environmental laws. Exempt wastes remain exempt only if they are not mixed with hazardous wastes or hazardous substances. Once mixture occurs, the waste must be disposed as a hazardous material in an approved hazardous waste disposal facility. Before the Clean Air Act as amended in 1990, air emissions from production, storage, steam generation, and compression facilities associated with hydrocarbon exploration, drilling, and production industry were not regulated. A critical proposed regulatory change which will significantly effect Class II injection wells for disposal of produced brine and injection for enhanced oil recovery is imminent. Federal regulations affecting hydrocarbon exploration, drilling and production, proposed EPA regulatory changes, and a recent significant US Court of Appeals decision are covered in this report. It appears that this industry will, in the future, fall under more stringent environmental regulations leading to increased costs for operators.

Carroll, Herbert B.; Johnson, William I.

1999-04-27T23:59:59.000Z

402

Paleotopography and hydrocarbon accumulation: Williston, Powder River, and Denver basins  

SciTech Connect (OSTI)

Recent geomorphic analyses of 1:24,000 scale topographic maps in the three major basins of the northern Great Plains have disclosed a persistent system of basement paleotopographic features that trend north-northeast throughout the region. Superimposed across this system and subtly influenced by it, are the northwesterly trending Laramide structural features. Paleozoic depositional patterns have been strongly influenced by the paleoridge and trough system formed by the north-northeast features. Mesozoic deposition has also been affected by the ancient subsurface system but in a more subtle manner. Many of the Paleozoic and Mezoxoic hydrocarbon locations in the three basins appear to be the results of paleotopographic control on hydrocarbon accumulation sites. This affect ranges from Paleozoic reef sites in the Williston basin through paleotrough localization of Pennsylvanian Minnelusa production in the Powder River basin to fractured Cretaceous Niobrara production at the Silo field in the Denver basin. Basement paleotopography is the underlying factor in all deposition and subsequent hydrocarbon migration in any basin. As such, it should be considered a major factor in the exploration for oil and gas.

Thomas, G.E. (Thomas and Associates, Denver, CO (United States))

1991-06-01T23:59:59.000Z

403

Effect of use of low oxygenate gasoline blends upon emissions from California vehicles. Final report  

SciTech Connect (OSTI)

The objective of this project was to investigate the emissions effects of low-oxygenate gasoline blends on exhaust and evaporative emissions from a test fleet of California certified light-duty autos. Thirteen vehicles were procured and tested using four gasoline-oxygenate blends over three test cycles. The four gasoline blends were: Methyl Tertiary Butyl Ether (MTBE), Ethyl Tertiary Butyl Ether (ETBE), and 'match' and 'splash' blends of ethanol (in the 'match' blend the fuel Reid Vapor Pressure (RVP) is held constant, while in the 'splash' blend the fuel RVP is allowed to increase). Hydrocarbon and carbon monoxide exhaust emissions were generally reduced for the oxygenated blends, the exception being the 'splash-blended' ethanol gasoline which showed mixed results. Older technology vehicles (e.g., non-catalyst and oxidation catalyst) showed the greatest emissions reductions regardless of gasoline blend, while later technology vehicles showed the smallest reductions. Evaporative emissions and toxics were generally reduced for ETBE, while results for the other blends were mixed.

Born, G.L.; Lucas, S.V.; Scott, R.D.; DeFries, T.H.; Kishan, S.

1994-02-01T23:59:59.000Z

404

Oxygen penetration into the bulk of palladium  

Science Journals Connector (OSTI)

Oxygen penetration into the bulk of palladium ... During heating, the reaction rate exhibited an activity maximum at 650 K, whereas no activity maximum was found during the ... ...

C. T. Campbell; D. C. Foyt; J. M. White

1977-01-01T23:59:59.000Z

405

Oxygen-Enriched Combustion | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

tip sheet discusses how an increase in oxygen in combustion air can reduce the energy loss in the exhaust gases and increase process heating system efficiency. PROCESS HEATING...

406

Renewable Oxygenate Blending Effects on Gasoline Properties  

Science Journals Connector (OSTI)

Renewable Oxygenate Blending Effects on Gasoline Properties ... National Renewable Energy Laboratory, Golden, Colorado 80401, United States ... Energy Fuels, 2011, 25 (10), ...

Earl Christensen; Janet Yanowitz; Matthew Ratcliff; Robert L. McCormick

2011-08-16T23:59:59.000Z

407

Oxygen Concentration Microgradients for Cell Culture.  

E-Print Network [OSTI]

??There is a growing need for technology that can control microscale oxygen gradients onto a tissue or culture sample in vitro. This dissertation introduces the (more)

Park, Jaehyun

2010-01-01T23:59:59.000Z

408

Oxygen ion-beam microlithography  

DOE Patents [OSTI]

A method of providing and developing a resist on a substrate for constructing integrated circuit (IC) chips includes the following steps: of depositing a thin film of amorphous silicon or hydrogenated amorphous silicon on the substrate and exposing portions of the amorphous silicon to low-energy oxygen ion beams to oxidize the amorphous silicon at those selected portions. The nonoxidized portions are then removed by etching with RF-excited hydrogen plasma. Components of the IC chip can then be constructed through the removed portions of the resist. The entire process can be performed in an in-line vacuum production system having several vacuum chambers. Nitrogen or carbon ion beams can also be used. 5 figures.

Tsuo, Y.S.

1991-08-20T23:59:59.000Z

409

Oxygen ion-beam microlithography  

DOE Patents [OSTI]

A method of providing and developing a resist on a substrate for constructing integrated circuit (IC) chips includes the following steps: of depositing a thin film of amorphous silicon or hydrogenated amorphous silicon on the substrate and exposing portions of the amorphous silicon to low-energy oxygen ion beams to oxidize the amorphous silicon at those selected portions. The nonoxidized portions are then removed by etching with RF-excited hydrogen plasma. Components of the IC chip can then be constructed through the removed portions of the resist. The entire process can be performed in an in-line vacuum production system having several vacuum chambers. Nitrogen or carbon ion beams can also be used.

Tsuo, Y. Simon (Lakewood, CO)

1991-01-01T23:59:59.000Z

410

Direct Observation of the Oxygenated Species during Oxygen Reduction on a  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Direct Observation of the Oxygenated Species during Oxygen Reduction on a Direct Observation of the Oxygenated Species during Oxygen Reduction on a Platinum Fuel Cell Cathode Friday, December 20, 2013 Fuel Cell Figure 1 Figure 1. In situ x-ray spectroscopy identification and DFT simulations of oxygenated intermediates on a platinum fuel-cell cathode. The study shows that two types of hydroxyl intermediates (non-hydrated OH and hydrated OH) with distinct activities coexist on a fuel-cell cathode. The performance of polymer-electrolyte-membrane (PEM) fuel cells is limited by the reduction at the cathode of various oxygenated intermediates in the four-electron pathway of the oxygen reduction reaction. A research team led by SLAC scientists performed x-ray spectroscopy identification and DFT simulations of oxygenated intermediates on a platinum fuel-cell cathode

411

Transient oxygen consumption rate measurements with the BDT?M? oxygen biosensor system  

E-Print Network [OSTI]

Oxygen consumption rate (OCR) is a reliable indicator of tissue health. Recently, the OCR of isolated human islets has been shown to predict transplant outcome in diabetic mice. The Oxygen Biosensor System (OBS) is a ...

Low, Clarke Alan

2008-01-01T23:59:59.000Z

412

The explosive oxidation of hydrocarbons in a supercritical water  

Science Journals Connector (OSTI)

The kinetics of oxidation of naphthalene and a heavy oil residue (upon vacuum distillation) by oxygen dissolved in supercritical water is studied in a wide range of temperatures (663 K?T?1075 K) and pressures (31...

A. A. Vostrikov; S. A. Psarov

2002-09-01T23:59:59.000Z

413

Method and apparatus for monitoring a hydrocarbon-selective catalytic reduction device  

DOE Patents [OSTI]

A method for monitoring a hydrocarbon-selective catalytic reactor device of an exhaust aftertreatment system of an internal combustion engine operating lean of stoichiometry includes injecting a reductant into an exhaust gas feedstream upstream of the hydrocarbon-selective catalytic reactor device at a predetermined mass flowrate of the reductant, and determining a space velocity associated with a predetermined forward portion of the hydrocarbon-selective catalytic reactor device. When the space velocity exceeds a predetermined threshold space velocity, a temperature differential across the predetermined forward portion of the hydrocarbon-selective catalytic reactor device is determined, and a threshold temperature as a function of the space velocity and the mass flowrate of the reductant is determined. If the temperature differential across the predetermined forward portion of the hydrocarbon-selective catalytic reactor device is below the threshold temperature, operation of the engine is controlled to regenerate the hydrocarbon-selective catalytic reactor device.

Schmieg, Steven J; Viola, Michael B; Cheng, Shi-Wai S; Mulawa, Patricia A; Hilden, David L; Sloane, Thompson M; Lee, Jong H

2014-05-06T23:59:59.000Z

414

High density adsorbed oxygen on Rh,,111... and enhanced routes to metallic oxidation using atomic oxygen  

E-Print Network [OSTI]

High density adsorbed oxygen on Rh,,111... and enhanced routes to metallic oxidation using atomic oxygen K. D. Gibson, Mark Viste, Errol C. Sanchez, and S. J. Sibener The James Franck Institute; accepted 30 November 1998 Exposure of Rh 111 to atomic oxygen leads to the facile formation of a full

Sibener, Steven

415

Apparatus and method for rapid separation and detection of hydrocarbon fractions in a fluid stream  

DOE Patents [OSTI]

An apparatus and method for rapid fractionation of hydrocarbon phases in a sample fluid stream are disclosed. Examples of the disclosed apparatus and method include an assembly of elements in fluid communication with one another including one or more valves and at least one sorbent chamber for removing certain classifications of hydrocarbons and detecting the remaining fractions using a detector. The respective ratios of hydrocarbons are determined by comparison with a non separated fluid stream.

Sluder, Charles S.; Storey, John M.; Lewis, Sr., Samuel A.

2013-01-22T23:59:59.000Z

416

Initiation Mechanisms and Kinetics of Pyrolysis and Combustion of JP-10 Hydrocarbon Jet Fuel  

Science Journals Connector (OSTI)

Initiation Mechanisms and Kinetics of Pyrolysis and Combustion of JP-10 Hydrocarbon Jet Fuel ... We found that the primary decomposition reactions involve either (1) dissociation of ethylene from JP-10, resulting in the formation of a C8 hydrocarbon intermediate, or (2) the production of two C5 hydrocarbons. ... Heats of combustion (kcal/mole) were measured via O bomb calorimetry; adamantane (I) (c), -1441.95 ...

Kimberly Chenoweth; Adri C. T. van Duin; Siddharth Dasgupta; William A. Goddard III

2009-02-11T23:59:59.000Z

417

OXYGEN ENHANCED COMBUSTION FOR NOx CONTROL  

SciTech Connect (OSTI)

This quarterly technical progress report will summarize work accomplished for the Program through the fourth quarter January-March 2001 in the following task areas: Task 1 - Oxygen Enhanced Combustion, Task 2 - Oxygen Transport Membranes and Task 4 - Program Management. This report will also recap the results of the past year. The program is proceeding in accordance with the objectives for the first year. OTM material characterization was completed. 100% of commercial target flux was demonstrated with OTM disks. The design and assembly of Praxair's single tube high-pressure test facility was completed. The production of oxygen with a purity of better than 99.5% was demonstrated. Coal combustion testing was conducted at the University of Arizona. Modest oxygen enhancement resulted in NOx emissions reduction. The injector for oxygen enhanced coal based reburning was conducted at Praxair. Combustion modeling with Keystone boiler was completed. Pilot-scale combustion test furnace simulations continued this quarter.

David R. Thompson; Lawrence E. Bool; Jack C. Chen

2001-04-01T23:59:59.000Z

418

Oxygen ion-conducting dense ceramic  

DOE Patents [OSTI]

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1997-01-01T23:59:59.000Z

419

Oxygen ion-conducting dense ceramic  

DOE Patents [OSTI]

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1996-01-01T23:59:59.000Z

420

Characterizing and Biological Monitoring of Polycyclic Aromatic Hydrocarbons in Exposures to Diesel Exhaust  

Science Journals Connector (OSTI)

Characterizing and Biological Monitoring of Polycyclic Aromatic Hydrocarbons in Exposures to Diesel Exhaust ... Diesel and Gasoline Engine Exhausts and Some Nitroarenes; IARC:? Lyon, France 1989. ...

Wei Huang; Thomas J. Smith; Long Ngo; Tong Wang; Hongqiao Chen; Fanggu Wu; Robert F. Herrick; David C. Christiani; Hui Ding

2007-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Naphthenic/paraffinic hydrocarbons of residual lube stock from West Siberian crudes  

SciTech Connect (OSTI)

The lube stocks from West Siberian crudes are characterized by high contents of aromatic hydrocarbons and by high viscosity indexes of the naphthenic/paraffinic and aromatic hydrocarbons. Mass spectrometric analysis showed that isoparaffins account for one-third of the total naphthenic/paraffinic hydrocarbons. The study showed that the naphthenic/paraffinic hydrocarbons of the residual lube stock from West Siberia crudes, even with a variation of molecular weight over broad limits, are relatively uniform in composition. They consist mainly of isoparaffinic and monocyclic and noncondensed naphthenic structures.

Detusheva, E.P.; Bogdanov, Sh.K.; Khramtsova, L.P.; Nekrasova, A.V.; Shkol'nikov, V.M.

1983-03-01T23:59:59.000Z

422

E-Print Network 3.0 - abundant accessible hydrocarbons Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Functionalization: An Energy Frontier Research... such as hydrocarbons, dioxygen, water, carbon dioxide and dihydrogen are central to new technologies for the use... of...

423

E-Print Network 3.0 - aromatic hydrocarbon exhaust Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Page: << < 1 2 3 4 5 > >> 1 Quantification of Local Ozone Production Attributable to Automobile Hydrocarbon Emissions Summary: : Acetylenes: Aromatics: 57 15 2 26 A breakdown of 17...

424

Calculation of the heats of combustion of aromatic hydrocarbons contained in power-generating fuel  

Science Journals Connector (OSTI)

The additive method of group contributions is used for the calculation of the heats of combustion of aromatic hydrocarbons of different structures.

E. V. Sagadeev; V. V. Sagadeev

2006-07-01T23:59:59.000Z

425

Calculation of the Heats of Combustion of Saturated Hydrocarbons Contained in Power-Generating Fuels  

Science Journals Connector (OSTI)

An empirical method is suggested for the calculation of the heats of combustion of saturated hydrocarbons by the additive scheme proceeding from their...

E. V. Sagadeev; V. V. Sagadeev

2002-07-01T23:59:59.000Z

426

E-Print Network 3.0 - aromatic hydrocarbon diol-epoxide Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

with a DNA... ), a polycyclic aromatic hydrocarbon. A residue of fuel and tobacco combustion and frequently ingested by humans... , BP is metabolized in mammals to...

427

Low-Temperature Hydrocarbon/CO Oxidation Catalysis in Support of HCCI Emission Control  

Broader source: Energy.gov [DOE]

Development of catalyst materials to facilitate the low-temperature oxidation of hydrocarbons and CO in homogeneous charge compression ignition (HCCI) emissions.

428

The Impact of Low Octane Hydrocarbon Blending Streams on "E85...  

Broader source: Energy.gov (indexed) [DOE]

Blending Streams on "E85" Engine Optimization The Impact of Low Octane Hydrocarbon Blending Streams on "E85" Engine Optimization deer12szybist.pdf More Documents &...

429

E-Print Network 3.0 - aromatic hydrocarbons adducted Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

hydrocarbon... to its high reactivity toward DNA and cellular proteins. The major acrolein-DNA adduct, -hydrox- ypropano... -hy- droxynonenal, and acrolein, that readily form...

430

E-Print Network 3.0 - aromatic hydrocarbon pah-degrading Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

degradation Summary: Removal of polycyclic aromatic hydrocarbons (PAHs) from sewage sludge by anaerobic degradation N... , terminate in the sludge, and can be released to the...

431

E-Print Network 3.0 - aromatic hydrocarbons pahs Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology 30 0600Fg--Chem--Forensic Oil Sampling 01 2010 ****DATA SOURCE**** Summary: M - Alkylated PAHs) Volatile Organic Hydrocarbons -- Paraffins,...

432

E-Print Network 3.0 - aromatic hydrocarbons pah Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology 30 0600Fg--Chem--Forensic Oil Sampling 01 2010 ****DATA SOURCE**** Summary: M - Alkylated PAHs) Volatile Organic Hydrocarbons -- Paraffins,...

433

E-Print Network 3.0 - aromatic hydrocarbon pah Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology 30 0600Fg--Chem--Forensic Oil Sampling 01 2010 ****DATA SOURCE**** Summary: M - Alkylated PAHs) Volatile Organic Hydrocarbons -- Paraffins,...

434

Polycyclic Aromatic Hydrocarbons Formation in Sludge Incineration by Fluidised Bed and Rotary Kiln Furnace  

Science Journals Connector (OSTI)

Polycyclic Aromatic Hydrocarbons (PAHs) are typical pollutants arising from incineration. They are produced in any incomplete combustion principally due to inhomogeneities in a combustion chamber. The effects ...

Giuseppe Mininni; Andrea Sbrilli; Ettore Guerriero

2004-05-01T23:59:59.000Z

435

Polycyclic aromatic hydrocarbon (PAH) in four fish species from different trophic levels in the Persian Gulf  

Science Journals Connector (OSTI)

Concentration of ten polycyclic aromatic hydrocarbon (PAH) compounds were determined in liver of four fish species from different trophic levels (Aurigequula fasciata, omnivore; Alepes djedaba, carnivore; Liza ab...

Shirin Rahmanpour; Nasrin Farzaneh Ghorghani

2014-11-01T23:59:59.000Z

436

E-Print Network 3.0 - active aryl hydrocarbon Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

437

E-Print Network 3.0 - aromatic hydrocarbon compounds Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

bases in Iraq and Afghanistan that lack Summary: Compounds Toxic Organic Halogenated Dioxins Furans (dioxins) Polycyclic Aromatic Hydrocarbons found... and detected all of the...

438

E-Print Network 3.0 - aryl hydrocarbon receptor-dna Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

439

E-Print Network 3.0 - aromatic polycyclic hydrocarbons Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

coal, oil, gas... called aromatic hydrocarbons. These include harmful pollutants like dioxins, PCBs and a group called Source: Rock, Chris - Department of Biological Sciences,...

440

E-Print Network 3.0 - aromatic hydrocarbons modulate Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

S0045-6535(02)00145-5 Summary: Abstract Polycyclic aromatic hydrocarbons (PAHs) and dioxins are lipophilic organic pollutants occurring... absorption, pig INTRODUCTION...

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

E-Print Network 3.0 - aromatic hydrocarbon aryl Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

442

E-Print Network 3.0 - aryl hydrocarbon monooxygenase Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

443

E-Print Network 3.0 - aromatic hydrocarbon tracers Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

S0045-6535(02)00145-5 Summary: Abstract Polycyclic aromatic hydrocarbons (PAHs) and dioxins are lipophilic organic pollutants occurring... absorption, pig INTRODUCTION...

444

E-Print Network 3.0 - aryl hydrocarbon receptor-regulated Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

classes of the aryl hydrocarbon receptor (AHR). A grander objective is to provide... pollutants is a direct consequence of their interactions with the aryl ... Source: Bradfield,...

445

E-Print Network 3.0 - aryl hydrocarbon receptor-1 Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARENTAL FACTORS ON GAMETE CONDITION AND VIABILITY Summary: . 15. 16. 17. 18-21. 22. Pollutants - petroleum aromatic hydrocarbons, aryl Pollutants - pesticides... high levels of...

446

E-Print Network 3.0 - aryl hydrocarbon nuclear Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

447

E-Print Network 3.0 - ahr aryl hydrocarbon Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

448

E-Print Network 3.0 - aromatic hydrocarbon water-soluble Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

S0045-6535(02)00145-5 Summary: Abstract Polycyclic aromatic hydrocarbons (PAHs) and dioxins are lipophilic organic pollutants occurring... with their lipophilicity and water...

449

E-Print Network 3.0 - aromatic hydrocarbons phahs Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

WH, Caton JE. 1983. Extraction of polycyclic aromatic hydrocarbons for qualitative analysis. In... : Handbook of Polycyclic Aromatic ... Source: Rock, Chris - Department of...

450

E-Print Network 3.0 - aryl hydrocarbon receptor-independent Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARENTAL FACTORS ON GAMETE CONDITION AND VIABILITY Summary: . 15. 16. 17. 18-21. 22. Pollutants - petroleum aromatic hydrocarbons, aryl Pollutants - pesticides... high levels of...

451

E-Print Network 3.0 - aryl hydrocarbon receptor-mediated Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 TOXICOLOGICAL SCIENCES 106(1), 8392 (2008) doi:10.1093toxscikfn149 Summary: ). Analysis of aryl hydrocarbon receptor-mediated signaling during physiological hypoxia reveals...

452

E-Print Network 3.0 - aryl hydrocarbon receptor-dependent Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

453

E-Print Network 3.0 - aryl hydrocarbon receptor Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Receptors in Fishes Summary: the aryl hydrocarbon receptor (AHR), through which dioxins and dioxin-like compounds cause altered gene... -methylcholanthrene AHH: aryl...

454

E-Print Network 3.0 - aromatic hydrocarbon-contaminated soil...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

soil... hydrocarbon degraders, and polycyclic aromatic ... Source: Ma, Lena - Soil and Water Science Department, University of Florida Collection: Environmental Sciences and...

455

Examination of polycyclic aromatic hydrocarbons in an urban stormwater system and bioaccumulation in Odonata.  

E-Print Network [OSTI]

??Polycyclic aromatic hydrocarbons (PAHs) are toxic organic pollutants produced from combustion processes. Associated with urban runoff they have been detected worldwide in urban wetlands. PAH (more)

Heintzman, Lucas

2013-01-01T23:59:59.000Z

456

Problems in Catalytic Oxidation of Hydrocarbons and Detailed Simulation of Combustion Processes.  

E-Print Network [OSTI]

??This dissertation research consists of two parts, with Part I on the kinetics of catalytic oxidation of hydrocarbons and Part II on aspects on the (more)

Xin, Yuxuan

2014-01-01T23:59:59.000Z

457

New IR Fiber-Optic Chemical Sensor for in Situ Measurements of Chlorinated Hydrocarbons in Water  

Science Journals Connector (OSTI)

In this work the development and validation of a new MIR fiber-optic physicochemical sensor system for the continuous in situ analysis of chlorinated hydrocarbons (CHCs) in...

Krska, R; Taga, K; Kellner, R

1993-01-01T23:59:59.000Z

458

Detection of Hydrocarbons in Water by MIR Evanescent-Wave Spectroscopy with Flattened Silver Halide Fibers  

Science Journals Connector (OSTI)

IR transmitting AgClxBr1-x fibers were used as internal reflection elements for the spectroscopic detection of hydrocarbons that are dissolved in water in an...

Hahn, P; Tacke, M; Jakusch, M; Mizaikoff, B; Spector, O; Katzir, A

2001-01-01T23:59:59.000Z

459

Characterization of hydrocarbons found in the arctic aquatic environment near the Ekati diamond mine.  

E-Print Network [OSTI]

??Polycyclic aromatic hydrocarbons (PAHs) in the aquatic environment of the Ekati Diamond Mine were evaluated in snow, sediment, air and water (via passive membrane samplers). (more)

Nabess, Stephanie Ann

2014-01-01T23:59:59.000Z

460

Hydrocarbon solubility and its migration processes: a look at the present status  

SciTech Connect (OSTI)

In this study we review the present status of knowledge of solubility of hydrocarbons and its implications on primary migration processes. The intent is to examine the solubility and the transportation mechanisms relevant to geopressured-geothermal reservoirs, although the discussion included here accommodates a wide range of related aspects. Influences of parameters associated with hydrocarbon (especially methane) solubility have been studied. We have sought to evaluate several primary hydrocarbon migration processes and to point out their attractive features as well as their limitations. A brief discussion of hydrocarbon generation processes is also included.

Mamun, C.K.; Ohkuma, H.; Sepehrnoori, K.

1985-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

In-Cylinder Reaction Chemistry and Kinetics During Negative Valve Overlap Fuel Injection Under Low-Oxygen Conditions  

SciTech Connect (OSTI)

Fuel injection into the negative valve overlap (NVO) period is a common method for controlling combustion phasing in homogeneous charge compression ignition (HCCI) as well as other forms of advanced combustion. During this event, at least a portion of the fuel hydrocarbons can be converted to products containing significant levels of H2 and CO, as well as other short chain hydrocarbons by means of thermal cracking, water-gas shift, and partial oxidation reactions, depending on the availability of oxygen and the time-temperature-pressure history. The resulting products alter the autoignition properties of the combined fuel mixture for HCCI. Fuel-rich chemistry in a partial oxidation environment is also relevant to other high efficiency engine concepts (e.g., the dedicated EGR (D-EGR) concept from SWRI). In this study, we used a unique 6-stroke engine cycle to experimentally investigate the chemistry of a range of fuels injected during NVO under low oxygen conditions. Fuels investigated included iso-octane, iso-butanol, ethanol, and methanol. Products from NVO chemistry were highly dependent on fuel type and injection timing, with iso-octane producing less than 1.5% hydrogen and methanol producing more than 8%. We compare the experimental trends with CHEMKIN (single zone, 0-D model) predictions using multiple kinetic mechanisms available in the current literature. Our primary conclusion is that the kinetic mechanisms investigated are unable to accurately predict the magnitude and trends of major species we observed.

Kalaskar, Vickey B [ORNL] [ORNL; Szybist, James P [ORNL] [ORNL; Splitter, Derek A [ORNL] [ORNL; Pihl, Josh A [ORNL] [ORNL; Gao, Zhiming [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL

2013-01-01T23:59:59.000Z

462

Singlet oxygen luminescence detection with a fibre-coupled superconducting  

E-Print Network [OSTI]

Singlet oxygen luminescence detection with a fibre-coupled superconducting nanowire single Triplet State Singlet State 1O2 Ground State Oxygen 3O2 Singlet oxygen Free space singlet oxygen luminescence detection Fibre-based singlet oxygen luminescence detection References Superconducting Detector

Greenaway, Alan

463

OXYGEN ENHANCED COMBUSTION FOR NOx CONTROL  

SciTech Connect (OSTI)

Conventional wisdom says adding oxygen to a combustion system enhances product throughput, system efficiency, and, unless special care is taken, increases NOx emissions. This increase in NOx emissions is typically due to elevated flame temperatures associated with oxygen use leading to added thermal NOx formation. Innovative low flame temperature oxy-fuel burner designs have been developed and commercialized to minimize both thermal and fuel NOx formation for gas and oil fired industrial furnaces. To be effective these systems require close to 100% oxy-fuel combustion and the cost of oxygen is paid for by fuel savings and other benefits. For applications to coal-fired utility boilers at the current cost of oxygen, however, it is not economically feasible to use 100% oxygen for NOx control. In spite of this conventional wisdom, Praxair and its team members, in partnership with the US Department of Energy National Energy Technology Laboratory, have developed a novel way to use oxygen to reduce NOx emissions without resorting to complete oxy-fuel conversion. In this concept oxygen is added to the combustion process to enhance operation of a low NOx combustion system. Only a small fraction of combustion air is replaced with oxygen in the process. By selectively adding oxygen to a low NOx combustion system it is possible to reduce NOx emissions from nitrogen-containing fuels, including pulverized coal, while improving combustion characteristics such as unburned carbon. A combination of experimental work and modeling was used to define how well oxygen enhanced combustion could reduce NOx emissions. The results of this work suggest that small amounts of oxygen replacement can reduce the NOx emissions as compared to the air-alone system. NOx emissions significantly below 0.15 lbs/MMBtu were measured. Oxygen addition was also shown to reduce carbon in ash. Comparison of the costs of using oxygen for NOx control against competing technologies, such as SCR, show that this concept offers substantial savings over SCR and is an economically attractive alternative to purchasing NOx credits or installing other conventional technologies. In conjunction with the development of oxygen based low NOx technology, Praxair also worked on developing the economically enhancing oxygen transport membrane (OTM) technology which is ideally suited for integration with combustion systems to achieve further significant cost reductions and efficiency improvements. This OTM oxygen production technology is based on ceramic mixed conductor membranes that operate at high temperatures and can be operated in a pressure driven mode to separate oxygen with infinite selectivity and high flux. An OTM material was selected and characterized. OTM elements were successfully fabricated. A single tube OTM reactor was designed and assembled. Testing of dense OTM elements was conducted with promising oxygen flux results of 100% of target flux. However, based on current natural gas prices and stand-alone air separation processes, ceramic membranes do not offer an economic advantage for this application. Under a different DOE-NETL Cooperative Agreement, Praxair is continuing to develop oxygen transport membranes for the Advanced Boiler where the economics appear more attractive.

David R. Thompson; Lawrence E. Bool; Jack C. Chen

2004-04-01T23:59:59.000Z

464

Catalysts and process for liquid hydrocarbon fuel production  

DOE Patents [OSTI]

The present invention provides a novel process and system in which a mixture of carbon monoxide and hydrogen synthesis gas, or syngas, is converted into hydrocarbon mixtures composed of high quality gasoline components, aromatic compounds, and lower molecular weight gaseous olefins in one reactor or step. The invention utilizes a novel molybdenum-zeolite catalyst in high pressure hydrogen for conversion, as well as a novel rhenium-zeolite catalyst in place of the molybdenum-zeolite catalyst, and provides for use of the novel catalysts in the process and system of the invention.

White, Mark G; Liu, Shetian

2014-12-09T23:59:59.000Z

465

Oxygen and organic matter thresholds for benthic faunal activity on the Pakistan margin oxygen minimum zone (7001100 m)  

E-Print Network [OSTI]

Oxygen and organic matter thresholds for benthic faunal activity on the Pakistan margin oxygen increased animal activity associated with increasing bottom-water oxygen concentration. We examined faunal community responses to oxygen and organic matter gradients across the lower oxygen minimum zone (OMZ

Levin, Lisa

466

Natural Ores as Oxygen Carriers in Chemical Looping Combustion  

Science Journals Connector (OSTI)

Natural Ores as Oxygen Carriers in Chemical Looping Combustion ... Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. ...

Hanjing Tian; Ranjani Siriwardane; Thomas Simonyi; James Poston

2013-01-02T23:59:59.000Z

467

Reactive oxygen species: a breath of life or death?  

E-Print Network [OSTI]

AP1, activator protein-1; ODD, oxygen-dependent degradationSignaling response when oxygen levels decrease (Fig. 1C;3. Halliwell B. Reactive oxygen species in living sys- tems:

Fruehauf, John P; Meyskens, Frank L Jr

2007-01-01T23:59:59.000Z

468

Blood oxygen transport and depletion : the key of consummate divers  

E-Print Network [OSTI]

and Dill, D. B. (1935). Oxygen dissociation curves of birdE. (1964). A venous blood oxygen reservoir in the divingand Torrance, J. D. (1977). Oxygen-Affinity of Avian Blood.

Meir, Jessica Ulrika

2009-01-01T23:59:59.000Z

469

Imaging Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies on TiO2(110). Imaging Intrinsic Diffusion of Bridge-Bonded Oxygen Vacancies on TiO2(110). Abstract: Since oxygen atom...

470

Oxygen Tension Modulates Neurite Outgrowth in PC12 Cells Through A Mechanism Involving HIF and VEGF  

E-Print Network [OSTI]

neural repair. Keywords Oxygen tension . Neurite extension .respective physiological oxygen microenvironments (Chen etet al. 2008). For example, oxygen tension differentially

Genetos, Damian C.; Cheung, Whitney K.; Decaris, Martin L.; Leach, J. Kent

2010-01-01T23:59:59.000Z

471

Long-term oxygen sensor implantation in the porcine subcutaneous environment  

E-Print Network [OSTI]

Membrane-?Covered Oxygen Electrode. Analytical Microvascular and tissue oxygen distribution. vitro stability of an oxygen sensor. Anal Chem,

Kumosa, Lucas Stefan

2011-01-01T23:59:59.000Z

472

Mach 2 combustion characteristics of hydrogen/hydrocarbon fuel mixtures  

SciTech Connect (OSTI)

The combustion of H/sub 2//CH/sub 4/ and H/sub 2//C/sub 2/H/sub 4/ mixtures containing 10 to 70 vol pct hydrocarbon at combustor inlet Mach number 2 and temperatures 2000 to 4000 R is investigated experimentally, applying direct-connect test hardware and techniques similar to those described by Diskin and Northam (1987) in the facilities of the NASA Langley Hypersonic Propulsion Branch. The experimental setup, procedures, and data-reduction methods are described; and the results are presented in extensive tables and graphs and characterized in detail. Fuel type and mixture are found to have little effect on the wall heating rate measured near the combustor exit, but H/sub 2//C/sub 2/H/sub 4/ is shown to burn much more efficiently than H/sub 2//CH/sub 4/, with no pilot-off blowout equivalence ratios greater than 0.5. It is suggested that H/sub 2//hydrocarbon mixtures are feasible fuels (at least in terms of combustion efficiency) for scramjet SSTO vehicles operating at freestream Mach numbers above 4.

Diskin, G.S.; Jachimowski, C.J.; Northam, G.B.; Bell, R.A.

1987-01-01T23:59:59.000Z

473

Preliminary Economics for Hydrocarbon Fuel Production from Cellulosic Sugars  

SciTech Connect (OSTI)

Biorefinery process and economic models built in CHEMCAD and a preliminary, genome-scale metabolic model for the oleaginous yeast Lipomyces starkeyi were used to simulate the bioconversion of corn stover to lipids, and the upgrading of these hydrocarbon precursors to diesel and jet fuel. The metabolic model was based on the recently released genome sequence for L. starkeyi and on metabolic pathway information from the literature. The process model was based on bioconversion, lipid extraction, and lipid oil upgrading data found in literature, on new laboratory experimental data, and on yield predictions from the preliminary L. starkeyi metabolic model. The current plant gate production cost for a distillate-range hydrocarbon fuel was estimated by the process model Base Case to be $9.5/gallon ($9.0 /gallon of gasoline equivalent) with assumptions of 2011$, 10% internal return on investment, and 2205 ton/day dry feed rate. Opportunities for reducing the cost to below $5.0/gallon, such as improving bioconversion lipid yield and hydrogenation catalyst selectivity, are presented in a Target Case. The process and economic models developed for this work will be updated in 2014 with new experimental data and predictions from a refined metabolic network model for L. starkeyi. Attaining a production cost of $3.0/gallon will require finding higher value uses for lignin other than power generation, such as conversion to additional fuel or to a co-product.

Collett, James R.; Meyer, Pimphan A.; Jones, Susanne B.

2014-05-18T23:59:59.000Z

474

Distillation sequence for the purification and recovery of hydrocarbons  

DOE Patents [OSTI]

This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.

Reyneke, Rian (Katy, TX); Foral, Michael (Aurora, IL); Papadopoulos, Christos G. (Naperville, IL); Logsdon, Jeffrey S. (Naperville, IL); Eng, Wayne W. Y. (League City, TX); Lee, Guang-Chung (Houston, TX); Sinclair, Ian (Warrington, GB)

2007-12-25T23:59:59.000Z

475

On the maximum value of the cosmic abundance of oxygen and the oxygen yield  

E-Print Network [OSTI]

We search for the maximum oxygen abundance in spiral galaxies. Because this maximum value is expected to occur in the centers of the most luminous galaxies, we have constructed the luminosity - central metallicity diagram for spiral galaxies, based on a large compilation of existing data on oxygen abundances of HII regions in spiral galaxies. We found that this diagram shows a plateau at high luminosities (-22.3 oxygen abundance 12+log(O/H) ~ 8.87. This provides strong evidence that the oxygen abundance in the centers of the most luminous metal-rich galaxies reaches the maximum attainable value of oxygen abundance. Since some fraction of the oxygen (about 0.08 dex) is expected to be locked into dust grains, the maximum value of the true gas+dust oxygen abundance in spiral galaxies is 12+log(O/H) ~ 8.95. This value is a factor of ~ 2 higher than the recently estimated solar value. Based on the derived maximum oxygen abundance in galaxies, we found the oxygen yield to be about 0.0035, depending on the fraction of oxygen incorporated into dust grains.

L. S. Pilyugin; T. X. Thuan; J. M. Vilchez

2007-01-11T23:59:59.000Z

476

Mutual solubilities of water and hydrocarbons from the Cubic plus Association equation of state: A new mixing rule for the correlation of observed minimum hydrocarbon solubilities  

Science Journals Connector (OSTI)

Abstract The cubic plus association (CPA) equation of state was employed to correlate the mutual solubilities of water and hydrocarbons (n-alkanes, cycloalkanes and aromatics). In order to reproduce the minimums observed in concentration vs. temperature curves, a new mixing rule is proposed based on Kabadi and Danner's idea, whereby the waterwater dispersive term is corrected to include the hydrophobic hydration effect. With this correction, correlated hydrocarbon solubilities curves have observable curvature at low temperatures. Two binary interaction parameters are required for saturated hydrocarbons and three for aromatics, which is just one more than the original CPA formulation. Using parameters determined from binary data, this improved mixing rule was employed for multicomponent waterhydrocarbon systems, with no further regression, producing better predictions when compared to the conventional van der Waals rules.

Milton Medeiros

2014-01-01T23:59:59.000Z

477

Desiccant bed on hydrocarbon charged to and removed from underground (salt) cavern  

SciTech Connect (OSTI)

A hydrocarbon fluid storage system is described which consists of in operable conjunction: a cavern formed within an underground salt strata below a ground surface, the cavern comprises a lower liquid volume of saturated sodium chloride storage brine and an upper fluid volume of wet hydrocarbon storage fluid, surface fluid handling means; conduit connecting the lower storage brine and upper storage hydrocarbon fluid with the surface fluid handling means, of fluid transfer means enabling transfer of brine and hydrocarbon fluid from the surface to the cavern and from the cavern to the surface, such that brine can be added to or withdrawn from the lower brine volume and hydrocarbon fluids can be added to or withdrawn from the upper hydrocarbon fluid volume, and at least one desiccant drier means positioned at the surface in operable association with the surface fluid handling means whereby the wet hydrocarbon fluid upon withdrawal from the cavern passes through the desiccant drier means and thereby becomes dry, and dry hydrocarbon fluid intended for storage passes through the desiccant drier prior to entering the storage cavern and thereby becomes wet.

Washer, S.P.

1986-06-03T23:59:59.000Z

478

Adsorption and Desorption of Hydrocarbons on a Supported Nickel Cracking Catalyst  

Science Journals Connector (OSTI)

...Hydrocarbons on a Supported Nickel Cracking Catalyst A. K. Galwey A study has been made...a high area supported nickel cracking catalyst. Measurements have been made of (i...adsorbed, after standard preparation of the catalyst, when a known volume of each hydrocarbon...

1963-01-01T23:59:59.000Z

479

Novel Methane, Ethane, and Propane Oxidizing Bacteria at Marine Hydrocarbon Seeps Identified by Stable Isotope Probing  

E-Print Network [OSTI]

Novel Methane, Ethane, and Propane Oxidizing Bacteria at Marine Hydrocarbon Seeps Identified by Stable Isotope Probing Running Title: Novel Methane, Ethane, and Propane Oxidizing Bacteria Section hydrocarbons in surface sediment from the Coal Oil Point seep field, offshore Santa4 Barbara, California. After

Sessions, Alex L.

480

The spatial scales, distribution, and intensity of natural marine hydrocarbon seeps near Coal Oil Point, California  

E-Print Network [OSTI]

area) are not well established, either globally or within strong source areas such as near Coal OilThe spatial scales, distribution, and intensity of natural marine hydrocarbon seeps near Coal Oil hydrocarbon seepage from marine environments is an important source of methane and other gases

Washburn, Libe

Note: This page contains sample records for the topic "hydrocarbons oxygenates excluding" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Mutagenicity of Soot and Associated Polycyclic Aromatic Hydrocarbons to Salmonella typhimurium  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbon fraction in terms...by the incomplete combustion of organic material...sediments (1), heat and power generation...PAH from fuel combustion found in the atmosphere...polycyclic aromatic hydrocarbons; PMS, postmitochondrial...amounts of mutation (data not presented...

Debra A. Kaden; Ronald A. Hites; and William G. Thilly

1979-10-01T23:59:59.000Z

482

Aryl hydrocarbon receptor polymorphisms and dioxin resistance in Atlantic killifish (Fundulus heteroclitus)  

E-Print Network [OSTI]

Aryl hydrocarbon receptor polymorphisms and dioxin resistance in Atlantic killifish (Fundulus aromatic hydrocarbons (HAHs) such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) as well as polynuclear and that the frequencies of the major allele types differ between dioxin- sensitive and dioxin-resistant populations

Hahn, Mark E.

483

Assessment of natural and anthropogenic hydrocarbon inputs using PAHs as tracers.  

E-Print Network [OSTI]

to produce liquid hydrocarbons and water. -- Coal-to-liquids (CTLs) are derived either by pyrolysis of coal authors accept that conventional oil resources are at an advanced stage of depletion and that liquid fuels is a heterogeneous mix of hydrocarbons that remain in liquid phase when extracted to the surface. -- Condensate

484

QSPR models of boiling point, octanolwater partition coefficient and retention time index of polycyclic aromatic hydrocarbons  

E-Print Network [OSTI]

QSPR models of boiling point, octanol­water partition coefficient and retention time index of polycyclic aromatic hydrocarbons Fabiana Alves de Lima Ribeiro, Ma´rcia Miguel Castro Ferreira* Laborato Structure­Property Relationship (QSPR) analysis and study of polycyclic aromatic hydrocarbons (PAHs

Ferreira, Márcia M. C.

485

NEW MARINE DECAPOD CRUSTACEANS FROM WATERS INFLUENCED BY HYDROmERMAL DISCHARGE, BRINE, AND HYDROCARBON SEEPAGE  

E-Print Network [OSTI]

and waters influenced by brine and hydrocarbon seeps continue to yield species new to science. Such enNEW MARINE DECAPOD CRUSTACEANS FROM WATERS INFLUENCED BY HYDROmERMAL DISCHARGE, BRINE, AND HYDROCARBON SEEPAGE AUSTIN B. WILLIAMS} ABSTRACT Five species of decapod crustaceans new to science

486

Polycyclic aromatic hydrocarbons: a QSPR study Marcia M.C. Ferreira  

E-Print Network [OSTI]

Polycyclic aromatic hydrocarbons: a QSPR study Marcia M.C. Ferreira UNICAMP Instituto de Quõmica studies such as the boiling temperature (Tb), the retention index (RI), n-octanol/water partition coecient; Chemometrics 1. Introduction The polycyclic aromatic hydrocarbons (PAH) have been, for a long time, a focus

Ferreira, Márcia M. C.

487

PARTICLE-ASSOCIATED POLYCYCLIC AROMATIC HYDROCARBONS IN THE ATMOSPHERE OF HONG KONG  

E-Print Network [OSTI]

PARTICLE-ASSOCIATED POLYCYCLIC AROMATIC HYDROCARBONS IN THE ATMOSPHERE OF HONG KONG M. ZHENG and M Technology, Clear Water Bay, Hong Kong, China ( present address: Graduate School of Oceanography, University@ust.hk) (Received 3 June 1998; accepted 22 December 1998) Abstract. Polycyclic aromatic hydrocarbons (PAHs) in total

Zheng, Mei

488

Induced Microearthquake Patterns in Hydrocarbon and Geothermal Reservoirs: W. Scott Phillips  

E-Print Network [OSTI]

Induced Microearthquake Patterns in Hydrocarbon and Geothermal Reservoirs: A Review W. Scott or production of fluids can induce microseismic events in hydrocarbon and geothermal reservoirs. By deploying sensors downhole, data sets have been collected that consist of a few hundred to well over 10,000 induced

489

Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies. Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies....

490

Biological Monitoring of Fire Fighters: Sister Chromatid Exchange and Polycyclic Aromatic Hydrocarbon-DNA Adducts in Peripheral Blood Cells  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbon-DNA adduct levels...exposure to carcinogenic combustion products. Cytoge...polycyclic aromatic hydrocarbon; CI, confidence interval...estimating exposures to combustion and pyrolysis products...into water, briefly heat denatured (100 Cfor...

Saou-Hsing Liou; David Jacobson-Kram; Miriam C. Poirier; Dung Nguyen; Paul T. Strickland; and Melvyn S. Tockman

1989-09-01T23:59:59.000Z

491

Biological Monitoring of Fire Fighters: Sister Chromatid Exchange and Polycyclic Aromatic Hydrocarbon-DNA Adducts in Peripheral Blood Cells  

Science Journals Connector (OSTI)

...polycyclic aromatic hydrocarbon-DNA adduct levels...to carcinogenic combustion products. Cytoge...polycyclic aromatic hydrocarbon; CI, confidence...controlled for during data analysis. Collection...estimating exposures to combustion and pyrolysis products...water, briefly heat denatured (100...

Saou-Hsing Liou; David Jacobson-Kram; Miriam C. Poirier; Dung Nguyen; Paul T. Strickland; and Melvyn S. Tockman

1989-09-01T23:59:59.000Z

492

Levels of Tobacco-Specific Nitrosamines and Polycyclic Aromatic Hydrocarbons in Mainstream Smoke from Different Tobacco Varieties  

Science Journals Connector (OSTI)

...carcinogenic polycyclic aromatic hydrocarbons in mainstream cigarette...21 U.S. EPA. Ambient Water Quality Criteria for Polynuclear Aromatic Hydrocarbons. EPA 440/5-80-069...Quality Criteria for Water; EPA 440/5-86-001...

Yan S. Ding; Liqin Zhang; Ram B. Jain; Ntasha Jain; Richard Y. Wang; David L. Ashley; and Clifford H. Watson

2008-12-01T23:59:59.000Z

493

Density Functional Theory Study of Oxygen Reduction Activity...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Study of Oxygen Reduction Activity on Ultrathin Platinum Nanotubes. Density Functional Theory Study of Oxygen Reduction Activity on Ultrathin Platinum Nanotubes. Abstract: The...

494

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers National Energy Technology Laboratory Contact NETL...

495

Testing Oxygen Reduction Reaction Activity with the Rotating...  

Broader source: Energy.gov (indexed) [DOE]

Testing Oxygen Reduction Reaction Activity with the Rotating Disc Electrode Technique Testing Oxygen Reduction Reaction Activity with the Rotating Disc Electrode Technique...

496

Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of Titanium Oxygen Diffusion (OD) Dramatically Improves Wear-Resistance of Titanium 2007 Diesel Engine-Efficiency &...

497

Oxygen detected in atmosphere of Saturn's moon Dione  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen detected in atmosphere of Saturn's moon Dione Oxygen detected in atmosphere of Saturn's moon Dione Scientists and an international research team have announced discovery of...

498

Virtual Oxygen Sensor for Innovative NOx and PM Emission Control...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies A virtual O2 sensor for...

499

Effects of Oxygen-Containing Functional Groups on Supercapacitor...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen-Containing Functional Groups on Supercapacitor Performance. Effects of Oxygen-Containing Functional Groups on Supercapacitor Performance. Abstract: Molecular dynamics (MD)...

500

Isolation, Characterization of an Intermediate in an Oxygen Atom...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Characterization of an Intermediate in an Oxygen Atom-Transfer Reaction, and the Determination of the Bond Isolation, Characterization of an Intermediate in an Oxygen Atom-Transfer...