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Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Treatability studies of groundwater contaminated with bis(2-chloroethyl) ether  

SciTech Connect (OSTI)

The groundwater aquifer underneath a chemical manufacturing plant in Southeast Texas has been contaminated with the leachate from its landfill. There are 17 major chlorinated hydrocarbon contaminants found in the groundwater with concentrations ranging from 1 ppm to 1,200 ppm. An air-stripping unit followed by a thermal catalytic oxidation unit is currently operating on-site to remove all of the chlorinated compounds from the contaminated groundwater. One of the contaminants, bis(2-chloroethyl)ether (DCEE), has a fairly low Henry`s Law constant; therefore, a high air flow rate is employed in the stripping unit to improve the overall stripping efficiency. Nevertheless, the treated groundwater still contains a fair amount of DCEE. An UV-peroxidation reactor is set up to study its feasibility for oxidizing DCEE. The treatability data indicate that DCEE at a concentration of 200 ppm can be oxidized effectively in the presence of H{sub 2}O{sub 2} and the effective UV wavelengths lie between 200 and 280 nm. No noticeable reduction of the oxidation rate is observed at low temperature ({approximately} 11 C). Apparent oxidation rate equations of DCEE are determined and several process design parameters are discussed.

Huang, F.Y.C. [New Mexico Inst. of Mining and Technology, Socorro, NM (United States). Dept. of Mineral and Environmental Engineering] [New Mexico Inst. of Mining and Technology, Socorro, NM (United States). Dept. of Mineral and Environmental Engineering; Li, K.Y.; Liu, C.C. [Lamar Univ., Beaumont, TX (United States). Dept. of Chemical Engineering] [Lamar Univ., Beaumont, TX (United States). Dept. of Chemical Engineering

1999-05-01T23:59:59.000Z

2

Effect of solvents on the radiation-induced polymerization of ethyl and isopropyl vinyl ethers  

SciTech Connect (OSTI)

The effect of solvents on the radiation-induced cationic polymerization of ethyl and isopropyl vinyl ethers (EVE and IPVE, respectively) was investigated. EVE and IPVE polymerizations were carried out in bulk and in solution under superdry conditions in which polar impurities, especially water, have been reduced to negligible levels. This was accomplished by means of a sodium mirror technique using joint free baked out glass equipment and high vacuum. Plots of the monomer conversions and irradiation times were obtained for EVE and IPVE polymerizations in bulk and in benzene solution at constant monomer concentrations. The monomer concentration dependence of the polymerization rate was studied for EVE polymerization in bulk and in benzene, diethlyl ether, diglyme and methylene chloride, and for IPVE polymerization in bulk and in benzene. Solvent effect on the estimated propagating rate constants was examined for EVE and IPVE polymerization in bulk and in solution. The effect of temperature on the polymerization rate was also investigated for EVE polymerization in bulk ad in benzene, diethyl and diisopropyl ethers, methylene chloride and nitromethane, and for IPVE ploymerization in bulk and in benzene.

Hsieh, W.C.

1981-01-01T23:59:59.000Z

3

E-Print Network 3.0 - anhydride-vinyl methyl ether Sample Search...  

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

4-Methyl-2-pentanol Other secondary alcohols... - quire handling with precautions. Acrolein tert-Butyl methyl ether Di(1-propynl) ether n... Methoxy-1,3,5,7- cyclooctatetraene...

4

E-Print Network 3.0 - acid-labile cholesterol-vinyl ether-peg...  

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

Crystallization of Recombinant Crithidia fasciculata Tryparedoxin Summary: of 30% polyethylene glycol monomethyl ether (PEG MME) 2000, 0.1 M TrisHCl, pH 8.2, 1% dimethyl Source:...

5

Effect of thermal history on the molecular orientation in polystyrene/poly(vinyl methyl ether) blends  

E-Print Network [OSTI]

ether) (PS/PVME) has been studied using polarization modulation infrared linear dichroism (PM to an increased orientation if the heating time at 51 8C is kept short. Moreover, PS and PVME develop a larger) blends; Thermal history; Polarization modulation infrared linear dichroism 1. Introduction The influence

Pezolet, Michel

6

E-Print Network 3.0 - aqueous crown ethers Sample Search Results  

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

ether recognition agent, as well as a glucose sensor, which utilizes... -3760, USA. vinyl crown ether into the PCCA 1,5-8. In contrast, we fab- ricatedaglucosesensing......

7

In vivo potentiation of 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea by the radiation sensitizer benznidazole  

SciTech Connect (OSTI)

Recent studies in mouse tumor systems have indicated a potential therapeutic advantage in combining the radiosensitizer misonidazole (MISO) with cancer chemotherapy drugs. One agent the antitumor activity of which has been enhanced to a greater extent than its hematological or gastrointestinal toxicities is the nitrosourea, 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU). Recently, sensitizers more lipophylic than MISO have been reported to give greater tumor response enhancement when combined with CCNU. The present studies compared the potential therapeutic benefit of combining MISO (partition coefficient, 0.43) or benznidazole (BENZO) (partition coefficient, 8.5) in KHT sarcoma or RIF-1 tumor-bearing C3H mice. Both sensitizers were administered i.p. and given either 30 min before (BENZO) or simultaneously with (MISO) the chemotherapeutic agent. Survival of clonogenic tumor cells assessed 22 to 24 hr after treatment or in situ tumor growth delay were used as assays of tumor response. Normal tissue toxicity was determined using the drug dose yielding 50% animal lethality in 30 days end point. When combined with CCNU, doses of MISO (5.0 mmol/kg) or BENZO (0.3 mmol/kg) were found to yield approximately equivalent increases in both the tumor effect (enhancement ratio, approximately 1.8 to 2.0) and normal tissue toxicity (enhancement ratio approximately 1.3 to 1.4). Both sensitizers therefore led to a therapeutic benefit. However, although a approximately 10-fold lower dose of the more lipophylic sensitizer BENZO proved to be as effective as MISO at enhancing the tumoricidal effects of CCNU, this dose reduction did not result in a greater therapeutic gain for BENZO.

Siemann, D.W.; Morrissey, S.; Wolf, K.

1983-03-01T23:59:59.000Z

8

2,6-Dithiopurine, a nucleophilic scavenger, protects against mutagenesis in mouse skin treated in vivo with 2-(chloroethyl) ethyl sulfide, a mustard gas analog  

SciTech Connect (OSTI)

Sulfur mustard [bis(2-chloroethyl)sulfide, SM] is a well-known DNA-damaging agent that has been used in chemical warfare since World War I, and is a weapon that could potentially be used in a terrorist attack on a civilian population. Dermal exposure to high concentrations of SM produces severe, long-lasting burns. Topical exposure to high concentrations of 2-(chloroethyl) ethyl sulfide (CEES), a monofunctional analog of SM, also produces severe skin lesions in mice. Utilizing a genetically engineered mouse strain, Big Blue, that allows measurement of mutation frequencies in mouse tissues, we now show that topical treatment with much lower concentrations of CEES induces significant dose- and time-dependent increases in mutation frequency in mouse skin; the mutagenic exposures produce minimal toxicity as determined by standard histopathology and immunohistochemical analysis for cytokeratin 6 and the DNA-damage induced phosphorylation of histone H2AX (?-H2AX). We attempted to develop a therapeutic that would inhibit the CEES-induced increase in mutation frequency in the skin. We observe that multi-dose, topical treatment with 2,6-dithiopurine (DTP), a known chemical scavenger of CEES, beginning 1 h post-exposure to CEES, completely abolishes the CEES-induced increase in mutation frequency. These findings suggest the possibility that DTP, previously shown to be non-toxic in mice, may be useful as a therapeutic agent in accidental or malicious human exposures to SM. -- Highlights: ? 200 mM 2-(chloroethyl) ethyl sulfide (CEES) induces mutations in mouse skin. ? This dose of CEES is not overtly toxic, as assayed by histopathology. ? 2,6-Dithiopurine (DTP), applied after CEES-treatment, abolishes CEES-mutagenesis. ? This supports the idea that sulfur mustards exhibit long biological half-lives.

Boulware, Stephen [Division of Pharmacy and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723 (United States)] [Division of Pharmacy and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723 (United States); Fields, Tammy; McIvor, Elizabeth; Powell, K. Leslie; Abel, Erika L. [Department of Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957 (United States)] [Department of Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957 (United States); Vasquez, Karen M. [Division of Pharmacy and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723 (United States)] [Division of Pharmacy and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723 (United States); MacLeod, Michael C., E-mail: mcmacleod@mdanderson.org [Department of Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957 (United States)

2012-09-01T23:59:59.000Z

9

4-Vinyl-, 4-vinyl-, and 4'-vinyl-2,2':6',2''-terpyridinyl ligands: their synthesis and the electrochemistry of their transition-metal coordination complexes  

SciTech Connect (OSTI)

4'-Vinyl-2,2':6',2''-terpyridinyl was conveniently prepared from 2-acetylpyridine via -oxoketene dithioacetal methodology, the intermediate 4'-(methylthio)-2,2':6',2''-terpyridinyl being converted into the corresponding 4'-methyl derivative with methylmagnesium bromide and bis(triphenylphosphino)nickel(II) dichloride followed by generation of the methyl anion with lithium tetramethylpiperidide, reaction of the anion with chloromethyl methyl ether, and introduction of the vinyl group by treatment of the ether with potassium tert-butoxide/THF. Analogous reactions led to the 4-vinyl- and 6-vinyl isomers by using the appropriate methyl-substituted 2-acetylpyridine except that in these instances desulfurization of the 4'-methylthio group with nickel boride was an addition step. These vinyl-substituted ligands formed a variety of readily electropolymerizable simple and mixed-ligand complex monomers with cobalt, ruthenium, and iron with polymerization rates whose magnitude varied with position and number of vinyl substituents.

Potts, K.T.; Usifer, D.A.; Guadalupe, A.; Abruna, H.D.

1987-06-24T23:59:59.000Z

10

Expression of proliferative and inflammatory markers in a full-thickness human skin equivalent following exposure to the model sulfur mustard vesicant, 2-chloroethyl ethyl sulfide  

SciTech Connect (OSTI)

Sulfur mustard is a potent vesicant that induces inflammation, edema and blistering following dermal exposure. To assess molecular mechanisms mediating these responses, we analyzed the effects of the model sulfur mustard vesicant, 2-chloroethyl ethyl sulfide, on EpiDerm-FT{sup TM}, a commercially available full-thickness human skin equivalent. CEES (100-1000 {mu}M) caused a concentration-dependent increase in pyknotic nuclei and vacuolization in basal keratinocytes; at high concentrations (300-1000 {mu}M), CEES also disrupted keratin filament architecture in the stratum corneum. This was associated with time-dependent increases in expression of proliferating cell nuclear antigen, a marker of cell proliferation, and poly(ADP-ribose) polymerase (PARP) and phosphorylated histone H2AX, markers of DNA damage. Concentration- and time-dependent increases in mRNA and protein expression of eicosanoid biosynthetic enzymes including COX-2, 5-lipoxygenase, microsomal PGE{sub 2} synthases, leukotriene (LT) A{sub 4} hydrolase and LTC{sub 4} synthase were observed in CEES-treated skin equivalents, as well as in antioxidant enzymes, glutathione S-transferases A1-2 (GSTA1-2), GSTA3 and GSTA4. These data demonstrate that CEES induces rapid cellular damage, cytotoxicity and inflammation in full-thickness skin equivalents. These effects are similar to human responses to vesicants in vivo and suggest that the full thickness skin equivalent is a useful in vitro model to characterize the biological effects of mustards and to develop potential therapeutics.

Black, Adrienne T. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Hayden, Patrick J. [MatTek Corporation, Ashland, MA (United States); Casillas, Robert P. [Battelle Memorial Institute, Columbus, OH (United States); Heck, Diane E. [Environmental Health Sciences, New York Medical College, Valhalla, NY (United States); Gerecke, Donald R. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Sinko, Patrick J. [Pharmaceutics, Rutgers University, Piscataway, NJ (United States); Laskin, Debra L. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Laskin, Jeffrey D., E-mail: jlaskin@eohsi.rutgers.ed [Environmental and Occupational Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ (United States)

2010-12-01T23:59:59.000Z

11

Inhibition of NADPH cytochrome P450 reductase by the model sulfur mustard vesicant 2-chloroethyl ethyl sulfide is associated with increased production of reactive oxygen species  

SciTech Connect (OSTI)

Inhalation of vesicants including sulfur mustard can cause significant damage to the upper airways. This is the result of vesicant-induced modifications of proteins important in maintaining the integrity of the lung. Cytochrome P450s are the major enzymes in the lung mediating detoxification of sulfur mustard and its metabolites. NADPH cytochrome P450 reductase is a flavin-containing electron donor for cytochrome P450. The present studies demonstrate that the sulfur mustard analog, 2-chloroethyl ethyl sulfide (CEES), is a potent inhibitor of human recombinant cytochrome P450 reductase, as well as native cytochrome P450 reductase from liver microsomes of saline and {beta}-naphthoflavone-treated rats, and cytochrome P450 reductase from type II lung epithelial cells. Using rat liver microsomes from {beta}-naphthoflavone-treated rats, CEES was found to inhibit CYP 1A1 activity. This inhibition was overcome by microsomal cytochrome P450 reductase from saline-treated rats, which lack CYP 1A1 activity, demonstrating that the CEES inhibitory activity was selective for cytochrome P450 reductase. Cytochrome P450 reductase also generates reactive oxygen species (ROS) via oxidation of NADPH. In contrast to its inhibitory effects on the reduction of cytochrome c and CYP1A1 activity, CEES was found to stimulate ROS formation. Taken together, these data demonstrate that sulfur mustard vesicants target cytochrome P450 reductase and that this effect may be an important mechanism mediating oxidative stress and lung injury.

Gray, Joshua P. [Department of Science, United States Coast Guard Academy, New London, CT (United States); Department of Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Mishin, Vladimir [Department of Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Heck, Diane E. [Department of Environmental Health Science, New York Medical College, Valhalla, NY (United States); Laskin, Debra L. [Department of Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Laskin, Jeffrey D., E-mail: jlaskin@eohsi.rutgers.ed [Environmental and Occupational Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ (United States)

2010-09-01T23:59:59.000Z

12

Preparation of vinyl acetate  

DOE Patents [OSTI]

This invention pertains to the preparation of vinyl acetate by contacting a mixture of hydrogen and ketene with a heterogeneous catalyst containing a transition metal to produce acetaldehyde, which is then reacted with ketene in the presence of an acid catalyst to produce vinyl acetate.

Tustin, Gerald Charles (Kingsport, TN); Zoeller, Joseph Robert (Kingsport, TN); Depew, Leslie Sharon (Kingsport, TN)

1998-01-01T23:59:59.000Z

13

Preparation of vinyl acetate  

DOE Patents [OSTI]

This invention pertains to the preparation of vinyl acetate by contacting a mixture of hydrogen and ketene with a heterogeneous catalyst containing a transition metal to produce acetaldehyde, which is then reacted with ketene in the presence of an acid catalyst to produce vinyl acetate.

Tustin, G.C.; Zoeller, J.R.; Depew, L.S.

1998-03-24T23:59:59.000Z

14

Proton-conducting polymer electrolyte membranes based on fluoropolymers incorporating perfluorovinyl ether sulfonic acids and fluoroalkenes  

E-Print Network [OSTI]

acids. A novel synthetic route describing the preparation of perfluorovinyl ether monomer containing. The radical (co) and terpolymerization of 4-[(,,-trifluorovinyl)oxy]benzene sulfonyl chloride (TFVOBSC) with 1,1-difluoroethylene (or vinylidene fluoride, VDF), hexafluoropropene (HFP), and perfluoromethyl vinyl ether (PMVE

Paris-Sud XI, Université de

15

Regulation of Hsp27 and Hsp70 expression in human and mouse skin construct models by caveolae following exposure to the model sulfur mustard vesicant, 2-chloroethyl ethyl sulfide  

SciTech Connect (OSTI)

Dermal exposure to the vesicant sulfur mustard causes marked inflammation and tissue damage. Basal keratinocytes appear to be a major target of sulfur mustard. In the present studies, mechanisms mediating skin toxicity were examined using a mouse skin construct model and a full-thickness human skin equivalent (EpiDerm-FT{sup TM}). In both systems, administration of the model sulfur mustard vesicant, 2-chloroethyl ethyl sulfide (CEES, 100-1000 {mu}M) at the air surface induced mRNA and protein expression of heat shock proteins 27 and 70 (Hsp27 and Hsp70). CEES treatment also resulted in increased expression of caveolin-1, the major structural component of caveolae. Immunohistochemistry revealed that Hsp27, Hsp70 and caveolin-1 were localized in basal and suprabasal layers of the epidermis. Caveolin-1 was also detected in fibroblasts in the dermal component of the full thickness human skin equivalent. Western blot analysis of caveolar membrane fractions isolated by sucrose density centrifugation demonstrated that Hsp27 and Hsp70 were localized in caveolae. Treatment of mouse keratinocytes with filipin III or methyl-{beta}-cyclodextrin, which disrupt caveolar structure, markedly suppressed CEES-induced Hsp27 and Hsp70 mRNA and protein expression. CEES treatment is known to activate JNK and p38 MAP kinases; in mouse keratinocytes, inhibition of these enzymes suppressed CEES-induced expression of Hsp27 and Hsp70. These data suggest that MAP kinases regulate Hsp 27 and Hsp70; moreover, caveolae-mediated regulation of heat shock protein expression may be important in the pathophysiology of vesicant-induced skin toxicity.

Black, Adrienne T. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Hayden, Patrick J. [MatTek Corporation, Ashland, MA (United States); Casillas, Robert P. [Battelle Memorial Institute, Columbus, OH (United States); Heck, Diane E. [Environmental Health, New York Medical College, Valhalla, NY (United States); Gerecke, Donald R. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Sinko, Patrick J. [Pharmaceutics, Rutgers University, Piscataway, NJ (United States); Laskin, Debra L. [Pharmacology and Toxicology, Rutgers University, Piscataway, NJ (United States); Laskin, Jeffrey D., E-mail: jlaskin@eohsi.rutgers.edu [Environmental and Occupational Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ (United States)

2011-06-01T23:59:59.000Z

16

Copolymerization Studies of Vinyl Chloride and Vinyl Acetate with Ethylene Using a Transition-Metal Catalyst  

E-Print Network [OSTI]

monomers with polar functionality (such as vinyl acetate (VA), vinyl chloride (VC), and acrylates).1 OverCopolymerization Studies of Vinyl Chloride and Vinyl Acetate with Ethylene Using a Transition-Flory constants were identical (0.81) for the ethylene homopolymerizations and the ethylene/vinyl chloride

Goddard III, William A.

17

Microbial reductive dehalogenation of vinyl chloride  

DOE Patents [OSTI]

Compositions and methods are provided that relate to the bioremediation of chlorinated ethenes, particularly the bioremediation of vinyl chloride by Dehalococcoides-like organisms. An isolated strain of bacteria, Dehalococcoides sp. strain VS, that metabolizes vinyl chloride is provided; the genetic sequence of the enzyme responsible for vinyl chloride dehalogenation; methods of assessing the capability of endogenous organisms at an environmental site to metabolize vinyl chloride; and a method of using the strains of the invention for bioremediation.

Spormann, Alfred M. (Stanford, CA); Muller, Jochen A. (Baltimore, MD); Rosner, Bettina M. (Berlin, DE); Von Abendroth, Gregory (Nannhein, DE); Meshulam-Simon, Galit (Los Altos, CA); McCarty, Perry L (Stanford, CA)

2011-11-22T23:59:59.000Z

18

Microbial reductive dehalogenation of vinyl chloride  

DOE Patents [OSTI]

Compositions and methods are provided that relate to the bioremediation of chlorinated ethenes, particularly the bioremediation of vinyl chloride by Dehalococcoides-like organisms. An isolated strain of bacteria, Dehalococcoides sp. strain VS, that metabolizes vinyl chloride is provided; the genetic sequence of the enzyme responsible for vinyl chloride dehalogenation; methods of assessing the capability of endogenous organisms at an environmental site to metabolize vinyl chloride; and a method of using the strains of the invention for bioremediation.

Spormann, Alfred M [Stanford, CA; Muller, Jochen A [Baltimore, MD; Rosner, Bettina M [Berlin, DE; Von Abendroth, Gregory [Mannheim, DE; Meshulam-Simon, Galit [Los Angeles, CA; McCarty, Perry L [Stanford, CA

2014-02-11T23:59:59.000Z

19

Guidance Document Carcinogenic Substances  

E-Print Network [OSTI]

Mustard gas (bis(2-chloroethyl)sulfide) Formaldehyde (gas) Vinyl chloride Acetaldehyde Carbon tetrachloride 1,4-Dioxane Chloroform Ethyl carbamate (uret 3-Chloro-2-methylpropene Hexamethylphosphor 1

20

Rheology of silicon carbide/vinyl ester nanocomposites  

E-Print Network [OSTI]

New York, 1999. SILICON CARBIDE/VINYL ESTER NANOCOMPOSITESRheology of Silicon Carbide/Vinyl Ester NanocompositesABSTRACT: Silicon carbide (SiC) nanoparticles with no

Yong, Virginia; Hahn, H. Thomas

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Propenyl ether monomers for photopolymerization  

DOE Patents [OSTI]

Propenyl ether monomers of formula A(OCH{double_bond}CHCH{sub 3}){sub n} wherein n is an integer from one to six and A is selected from cyclic ethers, polyether and alkanes are disclosed. The monomers are readily polymerized in the presence of cationic photoinitiators, when exposed to actinic radiation, to form poly(propenyl ethers) that are useful for coatings, sealants, varnishes and adhesives. Compositions for preparing polymeric coatings comprising the compounds of the above formula together with particular cationic photoinitiators are also disclosed, as are processes for making the monomers from allyl halides and readily available alcohols. The process involves rearranging the resulting allyl ethers to propenyl ethers.

Crivello, J.V.

1996-10-22T23:59:59.000Z

22

Beam damage of poly(2-chloroethyl methylacrylate) [PCEMA] films...  

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

evaluating x-ray damage. PCEMA has been shown to be more sensitive to degradation than PVC which has also been used as a damage sensitive material useful for comparison of damage...

23

analog 2-chloroethyl ethyl: Topics by E-print Network  

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

de 170 High Purity Ethyl Acetate Production with a Batch Reactive Distillation Column using Dynamic Optimization Strategy CiteSeer Summary: AbstractEthyl acetate with the...

24

Process for the preparation of vinyl acetate  

DOE Patents [OSTI]

This invention pertains to the preparation of vinyl acetate by contacting within a contact zone a mixture of ketene and acetaldehyde with an acid catalyst at about one bar pressure and between about 85.degree. and 200.degree. C. and removing the reaction products from the contact zone.

Tustin, Gerald Charles (Kingsport, TN); Zoeller, Joseph Robert (Kingsport, TN); Depew, Leslie Sharon (Kingsport, TN)

1998-01-01T23:59:59.000Z

25

Process for the preparation of vinyl acetate  

DOE Patents [OSTI]

This invention pertains to the preparation of vinyl acetate by contacting within a contact zone a mixture of ketene and acetaldehyde with an acid catalyst at about one bar pressure and between about 85 and 200 C and removing the reaction products from the contact zone.

Tustin, G.C.; Zoeller, J.R.; Depew, L.S.

1998-02-17T23:59:59.000Z

26

anhydride-methyl vinyl ether: Topics by E-print Network  

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

Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A Montarnal, Nancy D. Eisenmenger, Sung-Yu Ku, Michael L....

27

acid-methyl vinyl ether: Topics by E-print Network  

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

Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A Montarnal, Nancy D. Eisenmenger, Sung-Yu Ku, Michael L....

28

Synthesis and Modification of Alternating Copolymers Based on Vinyl Ethers, Chlorotrifluoroethylene, and  

E-Print Network [OSTI]

, in dynamic mode, under air, showed decomposition temperatures (Td,10%) higher than 200 °C. Electrochemical recent fuel cells technology, combining the best of both alkaline batteries and solid polymer electrolyte-exchange membranes, do not require noble metals (Pt, Ru...) as catalysts to function, which is one of the main

Paris-Sud XI, Université de

29

Research Needs: Glass Solar Reflectance and Vinyl Siding  

E-Print Network [OSTI]

vinyl- sunlight.html. Certainteed. 2005. PVC Capstockon PVC Substrate. Material Safety Data Sheet MSDS Number:2010. Overview of materials for PVC, Rigid Grade. http://

Hart, Robert

2012-01-01T23:59:59.000Z

30

Reduction of Vinyl Chloride in Metallic Iron-Water Systems  

E-Print Network [OSTI]

Reduction of Vinyl Chloride in Metallic Iron-Water Systems B A O L I N D E N G * Department to groundwater and soil contamination. In particular, VC can be produced as an intermediate in the reductive). Remediation of groundwater contaminated with chlori- nated ethylenes, including vinyl chloride, has been chal

Deng, Baolin

31

VINYL CHLORIDE ACUTE TOXICITY THRESHOLDS IN THE CONTEXT OF CONTROLLING  

E-Print Network [OSTI]

. The "irreversible effects threshold" is the maximum concentration of pollutant in the air for a given exposure timeVINYL CHLORIDE ACUTE TOXICITY THRESHOLDS IN THE CONTEXT OF CONTROLLING URBAN DEVELOPMENT OR LAND of vinyl Chloride , the french procedure to set acute toxicity thresholds in the context of controlling

Boyer, Edmond

32

Aza crown ether compounds as anion receptors  

DOE Patents [OSTI]

A family of aza-ether based compounds including linear, multi-branched and aza-crown ethers is provided. When added to non-aqueous battery electrolytes, the new family of aza-ether based compounds acts as neutral receptors to complex the anion moiety of the electrolyte salt thereby increasing the conductivity and the transference number of LI{sup +} ion in alkali metal batteries. 3 figs.

Lee, H.S.; Yang, X.O.; McBreen, J.

1998-08-04T23:59:59.000Z

33

Near-Infrared Electrochromism in Electroactive Pentacenediquinone-Containing Poly(aryl ether)s  

E-Print Network [OSTI]

Near-Infrared Electrochromism in Electroactive Pentacenediquinone-Containing Poly(aryl etherVed October 21, 2005 The synthesis and near-infrared electrochromic properties of pentacenediquinone-infrared electrochromic properties of pentacenediquinone-containing poly(aryl ether)s were studied

Wan, Xin-hua

34

Crown Ethers in Graphene Bring Strong, Selective Binding | ornl...  

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

Materials Characterization Crown Ethers in Graphene Bring Strong, Selective Binding November 14, 2014 Schematic showing a graphene sheet containing an array of ideal crown ethers....

35

Ethers have good gasoline-blending attributes  

SciTech Connect (OSTI)

Because of their compatibility with hydrocarbon gasoline-blending components, their high octane blending values, and their low volatility blending values, ethers will grow in use as gasoline blending components. This article discusses the properties of ethers as blending components, and environmental questions.

Unzelman, G.H.

1989-04-10T23:59:59.000Z

36

Purification of aqueous cellulose ethers  

SciTech Connect (OSTI)

Manufacture of cellulose ethers usually involves high amounts of salt by-products. For application of the product, salt must be removed. In this work, we have studied the injection of high-pressure CO{sub 2} into an aqueous polymer-salt solution; we find that upon addition of isopropanol in addition to CO{sub 2}, the solution separates into two phases. One phase is rich in polymer and water, and the other phase contains mostly isopropanol, water and CO{sub 2}. The salt distributes between the two phases, thereby offering interesting possibilities for development of a new purification process for water-soluble polymers. This work presents experimental phase-equilibrium data for hydroxyethyl cellulose and sodium carboxymethyl cellulose with sodium acetate and potassium sulfate, respectively, in the region 40{degree}C and 30 to 80 bar. Based on these data, we suggest a process for the manufacture and purification of water-soluble cellulose ethers. 15 refs., 14 figs., 9 tabs.

Bartscherer, K.A.; de Pablo, J.J.; Bonnin, M.C.; Prausnitz, J.M.

1990-07-01T23:59:59.000Z

37

Guidance Document Peroxide-FormingChemicals  

E-Print Network [OSTI]

months. Acrylic acid Tetrafluoroethylene Acrylonitrile Vinyl acetate 1,3-Butadiene Vinyl acetylene months. Acetal Diethylene glycol dimethyl ether (diglyme) Isopropyl alcohol Acetaldehyde Diethyl ether Isopropyl propyl ether Acrylamide Diethyl fumatate Isopropyl vinyl ether Allyl ethyl ether Diethylketene 2

38

Beam damage of poly(vinyl chloride) [PVC] as observed by x-ray...  

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

damage of poly(vinyl chloride) PVC as observed by x-ray photoelectron spectroscopy at 143 K, 303 K and 373 K. Beam damage of poly(vinyl chloride) PVC as observed by x-ray...

39

Beam Damage of Poly(Vinyl Chloride) [PVC] Film as Observed by...  

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

Damage of Poly(Vinyl Chloride) PVC Film as Observed by X-ray Photoelectron Spectroscopy. Beam Damage of Poly(Vinyl Chloride) PVC Film as Observed by X-ray Photoelectron...

40

Research Needs: Glass Solar Reflectance and Vinyl Siding  

SciTech Connect (OSTI)

The subject of glass solar reflectance and its contribution to permanent vinyl siding distortion has not been extensively studied, and some phenomena are not yet well understood. This white paper presents what is known regarding the issue and identifies where more research is needed. Three primary topics are discussed: environmental factors that control the transfer of heat to and from the siding surface; vinyl siding properties that may affect heat build-up and permanent distortion; and factors that determine the properties of reflected solar radiation from glass surfaces, including insulating window glass. Further research is needed to fully characterize the conditions associated with siding distortion, the scope of the problem, physical properties of vinyl siding, insulating window glass reflection characteristics, and possible mitigation or prevention strategies.

Hart, Robert; Curcija, Charlie; Arasteh, Dariush; Goudey, Howdy; Kohler, Christian; Selkowitz, Stephen

2011-07-07T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Reactor-chromatographic determination of vinyl chloride in polyvinyl chloride  

SciTech Connect (OSTI)

The authors carry out a chromatographic study of the volatile products that evolve when various grades of domestic polyvinyl chloride are heated, to determine the concentration of residual monomer. To find vinyl chloride in complex mixtures of air pollutants the authors used sorptive reaction concentration of impurities. This new combination of methods is based on preliminary separation at the sampling stage of impurities that interfere in the analysis, followed by concentration of the desired components in a trap with an adsorbent, and chromatographic determination of the concentrated trace materials. The method obtains low vinyl chloride concentrations (down to 10/sup -4/-10/sup -5/ wt. %) with +/-5 relative error.

Berezkin, V.G.

1986-08-01T23:59:59.000Z

42

Experimental Pathology Laboratories, Inc. Methyl-Tertiary-Butyl Ether  

E-Print Network [OSTI]

COORDINATOR'S REPORT FOR LIFETIME CARCINOGENICITY STUDY OF METHYL-TERTIARY-BUTYL ETHER (MTBE) IN SPRAGUE CARCINOGENICITY STUDY OF METHYL-TERTIARY-BUTYL ETHER (MTBE) IN SPRAGUE-DAWLEY RATS CONDUCTED AT THE CANCER

Baker, Chris I.

43

Production of methyl tert-alkyl ethers  

SciTech Connect (OSTI)

The transition to the use of unleaded gasolines has required the replacement of tetraethyl lead by oxygen-containing compounds such as methanol, ethanol, and ethers, which are termed {open_quotes}oxygenates{close_quotes} in the technical literature. These may be used in commercial gasolines in amounts of 10-15% by volume, equivalent to 2% oxygen by weight. When methyl tert-butyl ether (MTBE) is used, the oxygen content may amount to 2.7% by weight. This oxygenate gives a significant improvement of knock resistance of naphtha fractions, the greatest effects being observed for straight-run naphthas and reformer naphthas produced under normal conditions; the MTBE also improves the engine power and economy characteristics and lowers the carbon monoxide content in the exhaust by 15-30% and the hydrocarbon content by 7-8%. This paper describes methods for the production of MTBE and also methyl tert-alkyl ethers.

Trofimov, V.A.

1995-01-01T23:59:59.000Z

44

Research Needs: Glass Solar Reflectance and Vinyl Siding  

E-Print Network [OSTI]

.S. for residential buildings. To meet IECC's U-factor and solar heat gain coefficient (SHGC) requirements insulatingLBNL-5022E Research Needs: Glass Solar Reflectance and Vinyl Siding Authors: R. Hart*, C. Curcija of any information, apparatus, product, or process disclosed, or represents that its use would

45

Process for making propenyl ethers and photopolymerizable compositions containing them  

DOE Patents [OSTI]

Propenyl ether monomers of formula A(OCH{double_bond}CHCH{sub 3}){sub n} (V) wherein n is an integer from one to six and A is selected from cyclic ethers, polyether, and alkanes are disclosed. The monomers are readily polymerized in the presence of cationic photoinitiators, when exposed to actinic radiation, to form poly(propenyl ethers) that are useful for coatings, sealants, varnishes and adhesives. Compositions for preparing polymeric coatings comprising the compounds of formula V together with particular cationic photoinitiators are also disclosed, as are processes for making the monomers from allyl halides and readily available alcohols. The process involves rearranging the resulting allyl ethers to propenyl ethers.

Crivello, J.V.

1996-01-23T23:59:59.000Z

46

Public health assessment for tri-county landfill waste management of Illinois, South Elgin, Kane County, Illinois, Region 5. Cerclis No. ILD048306183. Final report  

SciTech Connect (OSTI)

The Tri-County and Elgin Landfills pose a public health hazard because the concentrations of lead in downgradient private wells are high enough to be a long-term health concern. Completed exposure pathways include the exposure to contaminated water from on- and off-site private wells (inhalation, ingestion, dermal contact; past, present, future). Contaminants of concern in on-site groundwater include bis(2-chloroethyl)ether, vinyl chloride, antimony, arsenic, barium, cadmium, fluoride, lead, manganese, nickel, nitrate + nitrite, and thallium. Chemicals of concern in on-site surface soil and sediments include PCBs, arsenic, cadmium, and nickel. Contaminants of concern in on-site subsurface soil include PCBs, arsenic, cadmium, lead, and nickel. This public health assessment recommends health professionals education and community health education be conducted for the community impacted by the landfills.

NONE

1995-08-29T23:59:59.000Z

47

Beam damage of poly(2-chloroethyl methylacrylate) [PCEMA] films as observed  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien, I. Ben-Zvi, P. StudyBeam Historyby x-ray

48

Divinyl ether synthase gene and protein, and uses thereof  

DOE Patents [OSTI]

The present invention relates to divinyl ether synthase genes, proteins, and methods of their use. The present invention encompasses both native and recombinant wild-type forms of the synthase, as well as mutants and variant forms, some of which possess altered characteristics relative to the wild-type synthase. The present invention also relates to methods of using divinyl ether synthase genes and proteins, including in their expression in transgenic organisms and in the production of divinyl ether fatty acids, and to methods of suing divinyl ether fatty acids, including in the protection of plants from pathogens.

Howe, Gregg A. (East Lansing, MI); Itoh, Aya (Tsuruoka, JP)

2011-09-13T23:59:59.000Z

49

Divinyl ether synthase gene, and protein and uses thereof  

DOE Patents [OSTI]

The present invention relates to divinyl ether synthase genes, proteins, and methods of their use. The present invention encompasses both native and recombinant wild-type forms of the synthase, as well as mutants and variant forms, some of which possess altered characteristics relative to the wild-type synthase. The present invention also relates to methods of using divinyl ether synthase genes and proteins, including in their expression in transgenic organisms and in the production of divinyl ether fatty acids, and to methods of suing divinyl ether fatty acids, including in the protection of plants from pathogens.

Howe, Gregg A.; Itoh, Aya

2006-12-26T23:59:59.000Z

50

Crown Ethers Flatten in Graphene for Strong, Specific Binding...  

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

SHARE Crown Ethers Flatten in Graphene for Strong, Specific Binding ORNL discovery holds potential for separations, sensors, batteries, biotech and more This sheet of graphene...

51

alkyl-tert alkyl ethers: Topics by E-print Network  

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

TREAT METHYL- TERT-BUTYL ETHER CONTAMINATED CiteSeer Summary: Methyl-tert-butyl ether (MTBE) is a commonly used gasoline additive. Leaking underground storage tank systems,...

52

ORIGINAL PAPER Natural Fiber Reinforced Poly(vinyl chloride) Composites: Effect  

E-Print Network [OSTI]

ORIGINAL PAPER Natural Fiber Reinforced Poly(vinyl chloride) Composites: Effect of Fiber Type Science+Business Media, LLC 2008 Abstract Poly(vinyl chloride) (PVC) and natural fiber composites were copolymer on composite properties was investigated. Mechanical analysis showed that storage modulus

53

Process for producing dimethyl ether form synthesis gas  

DOE Patents [OSTI]

This invention pertains to a Fischer Tropsch process for converting synthesis gas to an oxygenated hydrocarbon with particular emphasis on dimethyl ether. Synthesis gas comprising carbon monoxide and hydrogen are converted to dimethyl ether by carrying out the reaction in the presence of an alkali metal-manganese-iron carbonyl cluster incorporated onto a zirconia-alumina support.

Pierantozzi, Ronald (Macungie, PA)

1985-01-01T23:59:59.000Z

54

Vinyl chloride monomer and other contaminants in PVC welding fumes  

SciTech Connect (OSTI)

An investigation into the nature of fumes produced during thermal welding of plasticized PVC sheeting has been carried out with the objective of determining if the known carcinogen vinyl chloride monomer (VCM) is formed and to assess the level of exposure to the operator. The results show that the atmospheric concentrations of VCM are well below accepted occupational exposure limits. This finding is consistent with reports in the technical literature which suggest that VCM is produced during thermal degradation of PVC only at temperatures considerably higher than those encountered during plastic welding.

Williamson, J.; Kavanagh, B.

1987-05-01T23:59:59.000Z

55

Origin of mechanical modifications in poly (ether ether ketone)/carbon nanotube composite  

SciTech Connect (OSTI)

Variations in the hardness of a poly (ether ether ketone) beam electrically modified with multi-walled carbon nanotubes (MWCNT, 0.5%-3%) are investigated. It is shown that both rupture and hardness variations correlate with the changes in carbon nanotube concentration when using micro indentation and extended Raman imaging. Statistical analysis of the relative spectral intensities in the Raman image is used to estimate local tube concentration and polymer crystallinity. We show that the histogram of the Raman D band across the image provides information about the amount of MWCNTs and the dispersion of MWCNTs in the composite. We speculate that we have observed a local modification of the ordering between pure and modified polymer. This is partially supported by small angle neutron scattering measurements, which indicate that the agglomeration state of the MWCNTs is the same at the concentrations studied.

Pavlenko, Ekaterina; Puech, Pascal; Bacsa, Wolfgang, E-mail: wolfgang.bacsa@cemes.fr [CEMES-CNRS and University of Toulouse, 29 Jeanne Marvig, 31055 Toulouse (France); Boyer, Franois; Olivier, Philippe [Universit de Toulouse, Institut Clment Ader, I.U.T. Universit Paul Sabatier - 133C Avenue de Rangueil - B.P. 67701, 31077 Toulouse CEDEX 4 (France); Sapelkin, Andrei [School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, E1 4NS London (United Kingdom); King, Stephen; Heenan, Richard [ISIS Facility, Rutherford Appleton Laboratory, Chilton, OX11 0QX Didcot (United Kingdom); Pons, Franois; Gauthier, Bndicte; Cadaux, Pierre-Henri [AIRBUS FRANCE (B.E. M and P Toulouse), 316 Route de Bayonne, 31060 Toulouse (France)

2014-06-21T23:59:59.000Z

56

Crown Ethers in Nonaqueous Electrolytes for Lithium/Air Batteries  

SciTech Connect (OSTI)

The effects of three crown ethers, 12-crown-4, 15-crown-5, and 18-crown-6, as additives and co-solvents in non-aqueous electrolytes on the cell performance of primary Li/air batteries operated in a dry air environment were investigated. Crown ethers have large effects on the discharge performance of non-aqueous electrolytes in Li/air batteries. A small amount (normally less than 10% by weight or volume in electrolytes) of 12-Crown-4 and 15-crown-5 reduces the battery performance and a minimum discharge capacity appears at the crown ether content of ca. 5% in the electrolytes. However, when the content increases to about 15%, both crown ethers improve the capacity of Li/air cells by about 28% and 16%, respectively. 15-Crown-5 based electrolytes even show a maximum discharge capacity in the crown ether content range from 10% to 15%. On the other hand, the increase of 18-crown-6 amount in the electrolytes continuously lowers of the cell performance. The different battery performances of these three crown ethers in electrolytes are explained by the combined effects from the electrolytes contact angle, oxygen solubility, viscosity, ionic conductivity, and the stability of complexes formed between crown ether molecules and lithium ions.

Xu, Wu; Xiao, Jie; Wang, Deyu; Zhang, Jian; Zhang, Jiguang

2010-02-04T23:59:59.000Z

57

State Restrictions on Methyl Tertiary Butyl Ether (released in AEO2006)  

Reports and Publications (EIA)

By the end of 2005, 25 states had barred, or passed laws banning, any more than trace levels of methyl tertiary butyl ether (MTBE) in their gasoline supplies, and legislation to ban MTBE was pending in 4 others. Some state laws address only MTBE; others also address ethers such as ethyl tertiary butyl ether (ETBE) and tertiary amyl methyl ether (TAME). Annual Energy Outlook 2006 assumes that all state MTBE bans prohibit the use of all ethers for gasoline blending.

2006-01-01T23:59:59.000Z

58

Molecular Mechanism of Polybrominated Diphenyl Ether Disposition in the Liver  

E-Print Network [OSTI]

Polybrominated diphenyl ethers (PBDEs) were introduced in the late 1970's as additive flame retardants incorporated into textiles, electronics, plastics and furniture. Although 2,2',3,3',4,4',5,5',6,6'-decabromodiphenyl ...

Pacyniak, Erik Kristofer

2010-10-01T23:59:59.000Z

59

Degradation of Vinyl Chloride and 1,2-Dichloroethane by Advanced Reduction Processes  

E-Print Network [OSTI]

A new treatment technology, called Advanced Reduction Process (ARP), was developed by combining UV irradiation with reducing reagents to produce highly reactive species that degrade contaminants rapidly. Vinyl chloride (VC) and 1,2-dichloroethane (1...

Liu, Xu

2013-07-27T23:59:59.000Z

60

Electron Beam Damage in Poly(Vinyl Chloride) and Poly(Acrylonitrile...  

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

Electron Spectroscopy. Abstract: AES spectra of spun-cast films of poly(vinyl chloride) (PVC) and poly(acrylonitrile) (PAN) were collected over a period of time to determine...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Photoionization of methyl t-butyl ether (MTBE) and t-octyl methyl ether (TOME) and analysis of their pyrolyses by  

E-Print Network [OSTI]

Photoionization of methyl t-butyl ether (MTBE) and t-octyl methyl ether (TOME) and analysis 1999; accepted 20 July 1999 Abstract The pyrolysis products of neutral methyl-d3 t-butyl ether (MTBE-d3 from thermal cracking patterns. MTBE and TOME both exhibit base peaks at m/z 73 (which shifts to m/z 76

Morton, Thomas Hellman

62

Pour-depressant activity of copolymers of ethylene with vinyl acetate in diesel fuel  

SciTech Connect (OSTI)

The authors investigate the influence of the degree of branching of the ethylene-vinyl acetate copolymers (EVAC) on the limiting filterability temperature and the solid point of diesel fuels. EVAC samples with identical contents of vinyl acetate and having a molecular weight of 4500-7200 were used. The pour-depressant activity of the copolymers was determined in diesel fuel. It is shown that the degree of branching of EVAC has a substantial influence on the depressant activity in diesel fuel.

Dushechkin, A.P.; Ivanov, V.I.; Elagin, A.L.; Levin, A.A.

1987-01-01T23:59:59.000Z

63

Cohort and case-control analyses of workers exposed to vinyl chloride: An update  

SciTech Connect (OSTI)

The mortality in a cohort of workers at a vinyl chloride polymerization plant has been updated, extending the period of observation in the original study from 1974 to 1986. Workers at this plant may have been exposed to vinyl chloride monomer and/or polyvinyl chloride dust, or may have had no exposure to either substance. Seventy-six percent of the work force worked in jobs with potential exposure to vinyl chloride monomer. Among the total cohort, statistically significant excess risks were observed for liver, lung, and brain cancer. For the subcohort of workers exposed to vinyl chloride monomer, the standardized mortality ratio (SMR) for liver cancer was 333 (90% confidence interval (CI) 202 to 521). However, there were no significant excesses of either brain (SMR = 145, 90% CI 78 to 249) or lung cancer (SMR = 115, 90% CI 96 to 141). To investigate dose response, nested case-control studies for liver, brain, and lung cancer were conducted among the total cohort (including the nonexposed). For these studies there were two exposure variables, cumulative dose of vinyl chloride monomer and cumulative dose of polyvinyl chloride dust. Cumulative dose was defined as the product of level and duration of exposure. The only significant association between disease risk and cumulative dose was for liver cancer and cumulative dose of vinyl chloride monomer. Further division of the liver cancers into angiosarcoma (n = 12) and other liver cancers (n = 7), based on review of death certificates and medical records, showed that the dose response existed only for angiosarcomas.

Wu, W.A.; Steenland, K.; Brown, D.; Wells, V.; Jones, J.; Schulte, P.; Halperin, W.

1989-06-01T23:59:59.000Z

64

High octane ethers from synthesis gas-derived alcohols  

SciTech Connect (OSTI)

The objective of the proposed research is to synthesize high octane ethers, primarily methyl isobutyl ether (MIBE) and methyl tertiary butyl ether (MTBE), directly from H[sub 2]/CO/CO[sub 2] coal-derived synthesis gas via alcohol mixtures that are rich in methanol and 2-methyl-l-propanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. The last stage of the synthesis involves direct coupling of synthesis gas-derived methanol and isobutanol that has been demonstrated by us to occur over superacid catalysts to yield methyl isobutyl ether (MIBE) at moderate pressures and a mixture of methanol and isobutene at low pressures. MIBE is an isomer of MTBE and a process is proposed whereby MTBE from the two alcohols is maximized and MIBE is minimized. This will be achieved by the proper choice of reaction conditions, i.e. intermediate pressures, and of inorganic acid catalysts that are stable at temperatures higher than 200[degree]C, at which the carbonium ion reaction coupling of the two alcohols to MTBE is more effective than the oxonium ion or ester reaction coupling to MIBE. Both organic and inorganic catalysts will be investigated, and the better catalysts of these classes will be subjected to long term performance studies. The long term performance studies of the combined process will extend to 1000 hr and detailed analytical data for all products will be provided.

Klier, K.; Herman, R.G.; Feeley, O.C.; Johansson, M.A.

1992-07-01T23:59:59.000Z

65

Ethylene-Vinyl Acetate Potential Problems for Photovoltaic Packaging  

SciTech Connect (OSTI)

Photovoltaic (PV) devices are typically encapsulated using ethylene-vinyl acetate (EVA) to provide mechanical support, optical coupling, electrical isolation, and protection against environmental exposure. Under exposure to atmospheric water and/or ultraviolet radiation, EVA will decompose to produce acetic acid, lowering the pH and increasing the surface corrosion rates of embedded devices. Even though acetic acid is produced at a very slow rate, it may not take much to catalyze reactions that lead to rapid module deterioration. Another consideration is that the glass transition of EVA, as measured using dynamic mechanical analysis, begins at temperatures of about -15 degC. Temperatures lower than this can be reached for extended periods of time in some climates. Because of increased moduli below the glass transition temperature, a module may be more vulnerable to damage if a mechanical load is applied by snow or wind at low temperatures. Modules using EVA should not be rated for use at such low temperatures without additional low-temperature mechanical testing beyond the scope of UL1703.

Kempe, M. D.; Jorgensen, G. J.; Terwilliger, K. M.; McMahon, T. J.; Kennedy, C. E.; Borek, T. T.

2006-01-01T23:59:59.000Z

66

Ethylene-Vinyl Acetate Potential Problems for Photovoltaic Packaging: Preprint  

SciTech Connect (OSTI)

Photovoltaic (PV) devices are typically encapsulated using ethylene-vinyl acetate (EVA) to provide mechanical support, optical coupling, electrical isolation, and protection against environmental exposure. Under exposure to atmospheric water and/or ultraviolet radiation, EVA will decompose to produce acetic acid, lowering the pH and increasing the surface corrosion rates of embedded devices. Even though acetic acid is produced at a very slow rate, it may not take much to catalyze reactions that lead to rapid module deterioration. Another consideration is that the glass transition of EVA, as measured using dynamic mechanical analysis, begins at temperatures of about ?15 C. Temperatures lower than this can be reached for extended periods of time in some climates. Because of increased moduli below the glass transition temperature, a module may be more vulnerable to damage if a mechanical load is applied by snow or wind at low temperatures. Modules using EVA should not be rated for use at such low temperatures without additional low-temperature mechanical testing beyond the scope of UL 1703.

Kempe, M. D.; Jorgensen, G. J.; Terwilliger, K. M.; McMahon, T. J.; Kennedy, C. E.; Borek, T. T.

2006-05-01T23:59:59.000Z

67

Control Study of Ethyl tert-Butyl Ether Reactive Distillation Muhammad A. Al-Arfaj  

E-Print Network [OSTI]

-butyl ether (ETBE) for gasoline blending as a replacement for methyl tert-butyl ether (MTBE) because and be blended with ETBE in the gasoline pool. Even for neat operation, if the conversion is low, the unconverted

Al-Arfaj, Muhammad A.

68

Room Temperature Copper(II)-Catalyzed Oxidative Cyclization of Enamides to 2,5-Disubstituted Oxazoles via Vinylic CH Functionalization  

E-Print Network [OSTI]

A copper(II)-catalyzed oxidative cyclization of enamides to oxazoles via vinylic CH bond functionalization at room temperature is described. Various 2,5-disubstituted oxazoles bearing aryl, vinyl, alkyl, and heteroaryl ...

Cheung, Chi Wai

69

Hot Pin Welding of Thin Poly(vinyl chloride) Sheet James D. Van de Ven, Arthur G. Erdman  

E-Print Network [OSTI]

Hot Pin Welding of Thin Poly(vinyl chloride) Sheet James D. Van de Ven, Arthur G. Erdman Mechanical of welding two thin sheets of poly(vinyl chloride) (PVC) with a heated pin, thus allowing construction of a relationship between the weld temperature and weld strength. Constructing a relationship between weld strength

Van de Ven, James D.

70

Radiation chemistry of alternative fuel oxygenates -- Substituted ethers  

SciTech Connect (OSTI)

The electron beam process, an advanced oxidation and reduction technology, is based in the field of radiation chemistry. Fundamental to the development of treatment processes is an understanding of the underlying chemistry. The authors have previously evaluated the bimolecular rate constants for the reactions of methyl tert-butyl ether (MTBE) and with this study have extended their studies to include ethyl tert-butyl ether (ETBE), di-isopropyl ether (DIPE) and tert-amyl methyl ether (TAME) with the hydroxyl radical, hydrogen atom and solvated electron using pulse radiolysis. For all of the oxygenates the reaction with the hydroxyl radical appears to be of primary interest in the destruction of the compounds in water. The rates with the solvated electron are limiting values as the rates appear to be relatively low. The hydrogen atom rate constants are relatively low, coupled with the low yield in radiolysis, they concluded that these are of little significance in the destruction of the alternative fuel oxygenates (and MTBE).

Mezyk, S. P.; Cooper, W. J.; Bartels, D. M.; Tobien, T.; O'Shea, K. E.

1999-11-15T23:59:59.000Z

71

Structural and electronic properties of poly(vinyl alcohol) using density functional theory  

SciTech Connect (OSTI)

The first principles calculations have been carried out to investigate the structural, electronic band structure density of states along with the projected density of states for poly(vinyl alcohol). Our structural calculation suggests that the poly(vinyl alcohol) exhibits monoclinic structure. The calculated structural lattice parameters are in excellent agreement with available experimental values. The band structure calculations reveal that the direct and indirect band gaps are 5.55 eV and 5.363 eV respectively in accordance with experimental values.

Dabhi, Shweta, E-mail: shwetadabhi1190@gmail.com; Jha, Prafulla K., E-mail: shwetadabhi1190@gmail.com [Department of Physics, Maharaja Krishnakumasinhji Bhavnagar University, Bhavnagar-364001 (India)

2014-04-24T23:59:59.000Z

72

Transition-metal pi-complexes of vinyl alcohol: platinum and palladium  

E-Print Network [OSTI]

of acetylacetonato- chl oro(n-vinyl alcohol) platinum( I I ) in d -tetrahydrofuran 8 17 19 21 23 Page Figure 9 Figure 10 Figure 11 Figure 12 Geometry of the methyl groups of acetylacetonatochloro(olefin)- platinum(II) with respect to the olefin ligand...~( Pl H H C-O C~ HsC HO H I CI 2210 IGG IOGI IM 17W INO . 500 IOG 1100 WO ENUNOEO ON I Figure 1 Ir spectrum of acetyl acetonatochl oro(n-vinyl alcohol)platinum(II) Nujol mull between CsI plates Beckman IR12 3. 0 35 4P MICRONS 5P 6. 0 7. 0 8. 0...

Ori, Masaru

1971-01-01T23:59:59.000Z

73

Kinetic and spectroscopic studies of vinyl acetate synthesis over Pd(100)  

E-Print Network [OSTI]

,b , M.S. Chena , and D.W. Goodmana, * a Department of Chemistry, Texas A&M University, P.O. Box 30012 for the production of polymers such as, polyvinyl acetate and vinyl acetate copolymers [1]. Currently, VA), For XPS analysis, MgKaradiation (300 W, pass energy 58.7 eV) was used, and the spectra referenced

Goodman, Wayne

74

Simultaneous measurement of laser reflection and transmission of poly,,vinyl chloride...  

E-Print Network [OSTI]

, unpigmented state are highly transmissive of light in the near-infrared range, al- lowing laser transmissionSimultaneous measurement of laser reflection and transmission of poly,,vinyl chloride... James D reflection, emphasizing the light transmitted through a material. This paper presents work creating a low

Van de Ven, James D.

75

Near-Infrared Laser Absorption of Poly(vinyl chloride) at Elevated Temperatures  

E-Print Network [OSTI]

Near-Infrared Laser Absorption of Poly(vinyl chloride) at Elevated Temperatures James D. Van de Ven, unpigmented state are highly transmissive of light in the near-infrared range, thus allowing laser of light detection [2, 3]. Within the near-infrared region nat- ural polymers have nearly no absorption [2

Van de Ven, James D.

76

CATALYSTS FOR HIGH CETANE ETHERS AS DIESEL FUELS  

SciTech Connect (OSTI)

A novel 1,2-ethanediol, bis(hydrogen sulfate), disodium salt precursor-based solid acid catalyst with a zirconia substrate was synthesized and demonstrated to have significantly enhanced activity and high selectivity in producing methyl isobutyl ether (MIBE) or isobutene from methanol-isobutanol mixtures. The precursor salt was synthesized and provided by Dr. T. H. Kalantar of the M.E. Pruitt Research Center, Dow Chemical Co., Midland, MI 48674. Molecular modeling of the catalyst synthesis steps and of the alcohol coupling reaction is being carried out. A representation of the methyl transfer from the surface activated methanol molecule (left) to the activated oxygen of the isobutanol molecule (right) to form an ether linkage to yield MIBE is shown.

Kamil Klier; Richard G. Herman; James G.C. Shen; Qisheng Ma

2000-08-31T23:59:59.000Z

77

The interactions of water and perfluorodiethyl ether on Ru(100)  

SciTech Connect (OSTI)

We have studied the interactions of water and perfluorodiethyl ether on Ru(100) in order to model the effects of surface structure and humidity on the bonding and decomposition of perfluoroalkyl ether lubricants with metal surfaces. In order to understand the interactions on Ru(100), we have first investigated the interactions of each of these adsorbates alone on the clean surface. The interactions of water with Ru(100) have been studied using both thermal desorption spectroscopy (TDS) and electron energy loss spectroscopy (EELS). From these studies we conclude that a small amount of water dissociates on this surface (5--10% of a monolayer), but water is adsorbed in a predominantly molecular form on this surface with an increasing degree of hydrogen-bonding with increasing coverage. The effects of hydrogen and oxygen coadsorption on the interactions of water with this surface have also been studied using TDS. Finally, the interactions of coadsorbed water and perfluorodiethyl ether on Ru(100) have been investigated using TDS.

Leavitt, P.

1990-09-21T23:59:59.000Z

78

Thermodynamics of Hydrogen Production from Dimethyl Ether Steam Reforming and Hydrolysis  

SciTech Connect (OSTI)

The thermodynamic analyses of producing a hydrogen-rich fuel-cell feed from the process of dimethyl ether (DME) steam reforming were investigated as a function of steam-to-carbon ratio (0-4), temperature (100 C-600 C), pressure (1-5 atm), and product species: acetylene, ethanol, methanol, ethylene, methyl-ethyl ether, formaldehyde, formic acid, acetone, n-propanol, ethane and isopropyl alcohol. Results of the thermodynamic processing of dimethyl ether with steam indicate the complete conversion of dimethyl ether to hydrogen, carbon monoxide and carbon dioxide for temperatures greater than 200 C and steam-to-carbon ratios greater than 1.25 at atmospheric pressure (P = 1 atm). Increasing the operating pressure was observed to shift the equilibrium toward the reactants; increasing the pressure from 1 atm to 5 atm decreased the conversion of dimethyl ether from 99.5% to 76.2%. The order of thermodynamically stable products in decreasing mole fraction was methane, ethane, isopropyl alcohol, acetone, n-propanol, ethylene, ethanol, methyl-ethyl ether and methanol--formaldehyde, formic acid, and acetylene were not observed. The optimal processing conditions for dimethyl ether steam reforming occurred at a steam-to-carbon ratio of 1.5, a pressure of 1 atm, and a temperature of 200 C. Modeling the thermodynamics of dimethyl ether hydrolysis (with methanol as the only product considered), the equilibrium conversion of dimethyl ether is limited. The equilibrium conversion was observed to increase with temperature and steam-to-carbon ratio, resulting in a maximum dimethyl ether conversion of approximately 68% at a steam-to-carbon ratio of 4.5 and a processing temperature of 600 C. Thermodynamically, dimethyl ether processed with steam can produce hydrogen-rich fuel-cell feeds--with hydrogen concentrations exceeding 70%. This substantiates dimethyl ether as a viable source of hydrogen for PEM fuel cells.

T.A. Semelsberger

2004-10-01T23:59:59.000Z

79

Palladium-Catalyzed Enantioselective ?-Arylation and ?-Vinylation of Oxindoles Facilitated by an Axially Chiral P-Stereogenic Ligand  

E-Print Network [OSTI]

The enantioselective ?-arylation and ?-vinylation of oxindoles catalyzed by Pd and a biarylmonophosphine ligand with both axial and phosphorus-based chirogenicity is reported. The resultant quaternary carbon stereocenters ...

Taylor, Alexander M.

80

Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.  

E-Print Network [OSTI]

The electrical and mechanical behavior of carbon black filled poly(vinyl acetate) latex-based and solution-based polymer composites was examined. A set of experiments were performed to distinguish composites with a segregated network (emulsion...

Miriyala, Sethu M.

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

E-Print Network 3.0 - aromatic crown ethers Sample Search Results  

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

cryptands are unique macrocycles. Since Lehn's seminal... that are several orders of magnitude greater than monomacrocyclic crown ethers.7 Size recognition properties......

82

E-Print Network 3.0 - allyl glycidyl ether Sample Search Results  

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

Science 15 () Trichloromethane ()1,1,2,2-1,1,2,2-Tetrachloroethane Summary: ;() Acrolein () Acrylic acid () Allyl zlcohol () Allyl chloride () Allyl glycidyl ether(AGE) ()2-...

83

E-Print Network 3.0 - anesthesia ether cyclopropane Sample Search...  

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

2 cm Source: Ecole Polytechnique, Centre de mathmatiques Collection: Mathematics 70 An Electrochemical Approach to the Guanacastepenes Summary: ), and the resulting enol ether...

84

E-Print Network 3.0 - anticancer ether lipid Sample Search Results  

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

Butyric acid Oligosaccharides Peptides 13-methyltetradecanoic acid Nucleosides Ether lipids... led to a substantial increase in our knowledge of the intracellular origin of...

85

POLYCHLORINATED BIPHENYLS AND POLYBROMINATED DIPHENYL ETHERS IN GALAPAGOS SEA LIONS (ZALOPHUS WOLLEBAEKI)  

E-Print Network [OSTI]

), polybrominated diphenyl ethers (PBDEs), polychlorinated dibenzo-p- dioxins (PCDDs), and polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) repre- sent persistent

Gobas, Frank

86

E-Print Network 3.0 - alpha -chloro ethers Sample Search Results  

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

YU, and JEONG S. YU, Department of Chemistry and Chemical... functions of two engineering plastics a poly(phenylene ether) and a polycether imide) were characterized...

87

The effect of temperature and relative humidity levels upon charcoal tube sampling for vinyl choloride  

E-Print Network [OSTI]

their cooperation, this research would not have been possible. I also wish to express my appreciation to the National Institute for Occupational Safety and Health which prov ided an educational grant. DEDICATION To Ann, Your love, words of encouragement... of their employees from angiosarcoma to prolonged vinyl chloride monomer (UCM) exposure. (I) The government immediately stepped in, and by Febr uary 1974, the National Institute for Occupational Safety and Health (NIOSH) had issued a set of recommendations...

McCaskill, Gerald Daniel

1983-01-01T23:59:59.000Z

88

Evaluation of the association between birth defects and exposure to ambient vinyl chloride  

SciTech Connect (OSTI)

Birth defects incidence for infants born to residents of Shawinigan, Canada in 1966-1979 were significantly higher than in three comparison communities. Since there has been a vinyl chloride polymerization plant in this town since 1943 from which ten cases of angiosarcoma of the liver have been identified, this study explores the possible association between exposure to vinyl chloride monomer (VCM) in ambient air and the occurrence of birth defects in the community. The excess of birth defects fluctuated seasonally in a way that corresponded to changes in VCM concentration in the environment. Mothers who gave birth to malformed children were younger on average in Shawinigan than in the comparison communities. However, there was no excess of still-births in Shawinigan. The excess in birth defects involved most organ systems, and variation in birth-defect rates among school districts could not be accounted for by estimates of VCM in the atmosphere. The occupational and residential histories of parents who gave birth to malformed infants were compared with those of parents of normal infants. The two groups did not differ in occupational exposure or closeness of residence to the vinyl chloride polymerization plant. Some descriptive data from this study raised the hypothesis of an association between VCM in the air and birth defects in the exposed community, but as a whole, within the sample size available, such an association could not be substantiated.

Theriault, G.; Iturra, H.; Gingras, S.

1983-06-01T23:59:59.000Z

89

CATALYSTS FOR HIGH CETANE ETHERS AS DIESEL FUELS  

SciTech Connect (OSTI)

A tungstena-zirconia (WZ) catalyst has been investigated for coupling methanol and isobutanol to unsymmetrical ethers, i.e. methyl isobutyl ether (MIBE) and compared with earlier studied sulfated-zirconia (SZ) and Nafion-H catalysts. In all cases, the ether synthesis mechanism is a dual site S{sub N}2 process involving competitive adsorption of reactants on proximal acid sites. At low reaction temperatures, methylisobutylether (MIBE) is the predominant product. However, at temperatures >135 C the WZ catalyst is very good for dehydration of isobutanol to isobutene. The surface acid sites of the WZ catalyst and a Nafion-H catalyst were diagnosed by high resolution X-ray photoelectron spectroscopy (XPS) of N 1s shifts after adsorption of amines. Using pyridine, ethylenediamine, and triethylamine, it is shown that WZ has heterogeneous strong Broensted acid sites. Theoretical study located the transition state of the alcohol coupling reaction on proximal Broensted acid sites and accounted well for XPS core-level shifts upon surface acid-base interactions. While computations have not been carried out with WZ, it is shown that the SZ catalyst is a slightly stronger acid than CF{sub 3}SO{sub 3}H (a model for Nafion-H) by 1.3-1.4 kcal/mol. A novel sulfated zirconia catalyst having proximal strong Broensted acid sites was synthesized and shown to have significantly enhanced activity and high selectivity in producing MIBE or isobutene from methanol/isobutanol mixtures. The catalyst was prepared by anchoring 1,2-ethanediol bis(hydrogen sulfate) salt precursor onto zirconium hydroxide, followed by calcination to remove the -(CH{sub 2}CH{sub 2})- bridging residues.

Kamil Klier; Richard G. Herman; Heock-Hoi Kwon; James G. C. Shen; Qisheng Ma; Robert A. Hunsicker; Andrew P. Butler; Scott J. Bollinger

2003-03-01T23:59:59.000Z

90

Polybrominated diphenyl ether flame retardants in the antarctic environment  

E-Print Network [OSTI]

, the historical record of dioxins, PCBs and DDTs in the same cores showed a decreasing trend. At present, PBDEs are recognized as a worldwide pollution problem since they have reached remote areas such as the deep ocean, the Arctic and Antarctica (de Boer et al... that cheerful and warm Brazilian spirit. You are my Aggie family! viii NOMENCLATURE #1; critical value of a statistical test used to reject the null hypothesis ANOVA Analysis of Variance BDE Brominated Diphenyl Ether BFR Brominated Flame Retardant DC...

Yogui, Gilvan Takeshi

2009-05-15T23:59:59.000Z

91

Treatment of Methyl tert-Butyl Ether Vapors in Biotrickling Filters. 2.  

E-Print Network [OSTI]

vapors of methyl tert-butyl ether (MTBE), a gasoline additive of great environmental concern MTBE treatment are discussed. Introduction The rapidly rising number of reports of groundwater con- taminated with the gasoline additive methyl tert-butyl ether (MTBE) has raised concerns about its

92

Atmospheric Methyl Tertiary Butyl Ether (MTBE) at a Rural Mountain Site in California  

E-Print Network [OSTI]

Atmospheric Methyl Tertiary Butyl Ether (MTBE) at a Rural Mountain Site in California Gunnar W. Schade,* Gabrielle B. Dreyfus, and Allen H. Goldstein ABSTRACT (CARB) measured MTBE in urban regions in 1995­ 1996, reporting a range of 0.4 to 13.2 ppbv in the LosMethyl tertiary butyl ether (MTBE

Cohen, Ronald C.

93

Environmental Microbiology (2001) 3(6), 407416 Methyl tert-butyl ether (MTBE) degradation by a  

E-Print Network [OSTI]

Environmental Microbiology (2001) 3(6), 407±416 Methyl tert-butyl ether (MTBE) degradation of California, Riverside, Riverside, CA 92521, USA. Summary The widespread use of methyl tert-butyl ether (MTBE is often proposed as the most promising alter- native after treatment. However, MTBE biodegradation appears

94

Decomposition of Ethanol and Dimethyl Ether During Chemical Vapour deposition Synthesis  

E-Print Network [OSTI]

1 Decomposition of Ethanol and Dimethyl Ether During Chemical Vapour deposition Synthesis of Single-phase thermal decomposition of ethanol and dimethyl ether (DME) at typical SWNT growth conditions using to the predicted decomposition mechanism. Signature peak intensities indicated concentrations of both ethanol

Maruyama, Shigeo

95

Use TAME and heavier ethers to improve gasoline properties  

SciTech Connect (OSTI)

Producing oxygenates from all potential FCC tertiary olefins is one of the most economic methods for reducing olefins and Reid vapor pressure (Rvp) in motor gasoline. MTBE production based on FCC isobutylene has reached a very high level. But the amount of MTBE from a refinery sidestream MTBE unit is insufficient for producing reformulated gasoline (RFG) and additional oxygenates must be purchased. The next phase will see conversion of isoamylenes in FCC light gasoline to TAME. Very little attention has been given to the heavier tertiary olefins present in the FCC light gasoline like tert-hexenes and heptenes. This route allows higher levels of oxygenates production, thereby lowering Rvp and the proportion of olefins in the gasoline pool and maximizing the use of FCC olefins. By using all the components produced by an FCC efficiently, many gasoline problems can be solved. Isobutene is converted to MTBE, C[sub 3]/C[sub 4] olefins are converted to alkylate and C[sub 5] tertiary olefins can be converted to TAME. All of these are preferred components for gasoline quality. By producing more oxygenates like MTBE, TAME and heavier ethers, a refinery can be self-sufficient in blending reformulated gasoline and no oxygenates need to be purchased. The technology for producing TAME and other ethers is described.

Ignatius, J.; Jaervelin, H.; Lindqvist, P. (Neste Engineering, Porvoo (Finland))

1995-02-01T23:59:59.000Z

96

Determination of methyl tert. butyl ether (MTBE) in gasoline  

SciTech Connect (OSTI)

A GLC-acid extraction method is described for the determination of MTBE in gasolines. The method consists of a programmed GLC analysis starting at about room temperature conducted before and after extraction with cold 85% phosphoric acid. This treatment results in the preferential solubility of ethers and other oxygenated compounds while minimizing the reaction of olefins and aromatics which may be present in the gasolines. Plotting various known concentrations of MTBE in gasolines against the concentrations determined in the same samples by the authors methodology results in a straight line relationship. The concentration of MTBE in any sample of gasoline may thus be determined using their GLC-extraction procedure and the calibration line. The analysis can accommodate a wide choice of standard GLC columns and programs. 2 refs., 1 fig., 1 tab.

Feldman, J.; Orchin, M. (Univ. of Cincinnati, OH (United States))

1993-02-01T23:59:59.000Z

97

A potassium crown ether complex with dichloroaurate(I)  

E-Print Network [OSTI]

Acta Cryst. (2003). E59, m57m58 DOI: 10.1107/S1600536803000813 Md. Alamgir Hossain et al. #15; [K(C 12 H 24 O 6 )][AuCl 2 ] m57 metal-organic papers Acta Crystallographica Section E Structure Reports Online ISSN 1600-5368 A potassium crown ether...-james@ku.edu Key indicators Single-crystal X-ray study T = 100 K Mean #27;(CC) = 0.002 A R factor = 0.017 wR factor = 0.047 Data-to-parameter ratio = 27.2 For details of how these key indicators were automatically derived from the article, see http...

Hossain, Alamgir; Powell, Douglas R.; Bowman-James, Kristin

2003-01-17T23:59:59.000Z

98

Solvent Effects on Cesium Complexation with Crown Ethers from Liquid to Supercritical Fluids  

SciTech Connect (OSTI)

Nuclear magnetic resonance (NMR) techniques were used to study crown ether-water interactions in solvents of low dielectric constants such as chloroform and carbon tetrachloride. Water forms a 1:1 complex with a number of crown ethers including 12-crown-4, 15-crown-5, 18-crown-6, dicyclohexano-18=crown-6, dicyclohexano-24-crown 8, and dibenzl-24-crown-8 in chloroform. Among these crown ethers, the 18-crown-6-H2 complex has the largest equilibrium constant (K=545) and 97% of the crown is complexed to water in chloroform. Addition of carbon tetrachloride to chloroform lowers the equilibrium constants of the crown-water complexes. The partition coefficients of crown ethers (D=crown in water/crown in solvent) between water and organic solvent also vary with solvent composition.

Chien M. Wai; Anne Rustenholtz; Shaofen Wang; Su-Chen Lee; Jamie Herman; Richard A. Porter

2004-03-15T23:59:59.000Z

99

Study of the peroxidation mechanism of diethyl ether (DEE) International Symposium on Loss Prvention  

E-Print Network [OSTI]

and in allylic and benzylic structures. In figure 23 are presented peroxidizable moieties in order of decreasing hazard. l.Ethers and acetals with a-hvdroaen H -i-o-

Paris-Sud XI, Université de

100

alkyl tert-butyl ether: Topics by E-print Network  

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

by Fusarium solani CiteSeer Summary: Fusarium solani degraded methyl tert-butyl ether (MTBE) and other oxygenated compounds from gasoline including tert-butyl alcohol (TBA). The...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Crystallization in the Thin and Ultrathin Films of Poly(ethylene-vinyl acetate) and Linear Low-Density Polyethylene  

E-Print Network [OSTI]

-Density Polyethylene Y. Wang, S. Ge, M. Rafailovich,*, J. Sokolov, Y. Zou, H. Ade, J. Lu1 ning,§ A. Lustiger, and G(ethylene-vinyl acetate) and linear low-density polyethylene (LLDPE) films spun-cast from the polymer/toluene solutions spherulite to sheaflike ag- gregates in polyethylene thin films at a critical thickness of 400 nm. Scho

102

Vapor-liquid equilibria for methanol + tetraethylene glycol dimethyl ether  

SciTech Connect (OSTI)

Vapor-liquid equilibrium (P-T-x) for the methanol + tetraethylene glycol dimethyl ether binary system were obtained by the static method in the range of temperatures from 293.15 to 423.15 K at 10 K intervals. The modified vapor pressure apparatus used is described. The Kuczynsky method was used to calculate the liquid and vapor composition and the activity coefficients of methanol from the initial composition of the sample and the measured pressure and temperature. The results were correlated by the NRTL and UNIQUAC temperature dependent activity coefficient models. This system shows nearly ideal behavior at 323.15 K, but positive deviations from ideality at lower temperatures and negative deviations at higher temperatures are observed. The activity coefficients become more negative with the increase in temperature and mole fraction of methanol. The excess molar enthalpy using the Gibss-Helmholtz equation and the NRTL and UNIQUAC parameters were calculated at 303.15 K and compared with experimental data. This binary system shows promise as a working pair for high-temperature heat pump applications.

Esteve, X.; Chaudhari, S.K.; Coronas, A. [Univ. Rovira i Virgili, Tarragona (Spain). Dept. of Electrical and Mechanical Engineering

1995-11-01T23:59:59.000Z

103

Coking phenomena in the pyrolysis of ethylene dichloride into vinyl chloride  

SciTech Connect (OSTI)

Pyrolysis of ethylene dichloride (EDC) into vinyl chloride (VCM) which is the monomer for polyvinyl chloride, one of the most popular polymers, has been established commercially for quite a time. The process around 500{degrees}C has been proved to give VCM of high purity at very high selectivity about 99% and a reasonable conversion about 50%. However, the coking is a major problem in the long run, requiring decoking treatment every two months. The present paper describes features of carbons produced in the pyrolysis process. Coke of respective features was found in the reactor, the transfer line, the heat exchanger and the rapid quencher. Typical pyrolytic carbon, anisotropic coke produced in the liquid phase, isotropic carbon was produced on the reactor wall as low as 500{degrees}C. The mechanisms for their formation are discussed.

Sotowa, Chiaki; Korai, Yozo; Mochida, Isao [Kyushu Univ., Kasuga, Fukuoka (Japan)] [and others

1995-12-31T23:59:59.000Z

104

Endovascular Embolization of Visceral Artery Aneurysms with Ethylene-vinyl Alcohol (Onyx): A Case Series  

SciTech Connect (OSTI)

We report the application of the liquid embolic agent ethylene-vinyl alcohol (Onyx; MicroTherapeutics, Irvine, CA, USA) in the management of visceral artery aneurysms. The technique and indications for using Onyx are discussed with emphasis on the management of wide-necked aneurysms and maintenance of patency of the parent vessel. None of the cases was considered suitable for stent-grafting or embolization with conventional agents. Two aneurysms of the renal artery bifurcation and one aneurysm of the inferior pancreaticoduodenal artery were treated. Following treatment there was complete exclusion of all aneurysms. There was no evidence of end-organ infarction. Follow-up with intervals up to 6 months has shown sustained aneurysm exclusion. Onyx is known to be effective in the management of intracranial aneurysms. Our experience demonstrates the efficacy and applicability of the use of Onyx in the treatment of complex visceral artery aneurysms.

Bratby, M.J.; Lehmann, E.D. [St. George's Hospital, Department of Radiology (United Kingdom); Bottomley, J.; Kessel, D.O.; Nicholson, A.A.; McPherson, S.J. [Leeds Teaching Hospitals NHS Trust, Department of Radiology (United Kingdom); Morgan, R.A.; Belli, A.-M. [St. George's Hospital, Department of Radiology (United Kingdom)], E-mail: Anna.Belli@stgeorges.nhs.uk

2006-12-15T23:59:59.000Z

105

DIMETHYL ETHER (DME)-FUELED SHUTTLE BUS DEMONSTRATION PROJECT  

SciTech Connect (OSTI)

The objectives of this research and demonstration program are to convert a campus shuttle bus to operation on dimethyl ether, a potential ultra-clean alternative diesel fuel. To accomplish this objective, this project includes laboratory evaluation of a fuel conversion strategy, as well as, field demonstration of the DME-fueled shuttle bus. Since DME is a fuel with no lubricity (i.e., it does not possess the lubricating quality of diesel fuel), conventional fuel delivery and fuel injection systems are not compatible with dimethyl ether. Therefore, to operate a diesel engine on DME one must develop a fuel-tolerant injection system, or find a way to provide the necessary lubricity to the DME. In this project, they have chosen the latter strategy in order to achieve the objective with minimal need to modify the engine. Their strategy is to blend DME with diesel fuel, to obtain the necessary lubricity to protect the fuel injection system and to achieve low emissions. The bulk of the efforts over the past year were focused on the conversion of the campus shuttle bus. This process, started in August 2001, took until April 2002 to complete. The process culminated in an event to celebrate the launching of the shuttle bus on DME-diesel operation on April 19, 2002. The design of the system on the shuttle bus was patterned after the system developed in the engine laboratory, but also was subjected to a rigorous failure modes effects analysis (FMEA, referred to by Air Products as a ''HAZOP'' analysis) with help from Dr. James Hansel of Air Products. The result of this FMEA was the addition of layers of redundancy and over-pressure protection to the system on the shuttle bus. The system became operational in February 2002. Preliminary emissions tests and basic operation of the shuttle bus took place at the Pennsylvania Transportation Institute's test track facility near the University Park airport. After modification and optimization of the system on the bus, operation on the campus shuttle route began in early June 2002. However, the work and challenges continued as it has been difficult to maintain operability of the shuttle bus due to fuel and component difficulties. In late June 2002, the pump head itself developed operational problems (loss of smooth function) leading to excessive stress on the magnetic coupling and excessive current draw to operate. A new pump head was installed on the system to alleviate this problem and the shuttle bus operated successfully on DME blends from 10-25 vol% on the shuttle bus loop until September 30, 2002. During the period of operation on the campus loop, the bus was pulled from service, operated at the PTI test track and real-time emissions measurements were obtained using an on-board emissions analyzer from Clean Air Technologies International, Inc. Particulate emissions reductions of 60% and 80% were observed at DME blend ratios of 12 vol.% and 25 vol.%, respectively, as the bus was operated over the Orange County driving cycle. Increases in NOx, CO and HC emissions were observed, however. In summary, the conversion of the shuttle bus was successfully accomplished, particulate emissions reductions were observed, but there were operational challenges in the field. Nonetheless, they were able to demonstrate reliable operation of the shuttle bus on DME-diesel blends.

Elana M. Chapman; Shirish Bhide; Jennifer Stefanik; Howard Glunt; Andre L. Boehman; Allen Homan; David Klinikowski

2003-04-01T23:59:59.000Z

106

Plug repairs of marine glass fiber / vinyl ester laminates subjected to in-plane shear stress or in-plane bending moment  

E-Print Network [OSTI]

Glass fiber / vinyl ester composite laminates represent an important class of modem fiber composites being proposed or used in state-of-the-art shipbuilding. This thesis examined the effectiveness of chopped strand mat ...

Urrutia Valenzuela, Roberto

2010-01-01T23:59:59.000Z

107

Procedures for Harvesting tissue for Genotyping with SolCAP Vinyl mesh (not metal) screen from local hardware store cut in plate size rectangles  

E-Print Network [OSTI]

Procedures for Harvesting tissue for Genotyping with SolCAP Supplies: Vinyl mesh (not metal) screen (Fisher part# 14-387-90) 1 quart Ziploc bags Silca: Fisher part# s161-212 Procedures 1. Label plate

Douches, David S.

108

The Effect of the Di-Tertiary Butyl Peroxide (DTBP) additive on HCCI Combustion of Fuel Blends of Ethanol and Diethyl Ether  

E-Print Network [OSTI]

diethyl ether (DEE) in ethanol fuel blends for a range ofbio-derived fuel components (ethanol) in emission productsHCCI Combustion of Fuel Blends of Ethanol and Diethyl Ether

Mack, John Hunter; Buchholz, Bruce A; Flowers, Daniel L; Dibble, Robert W

2005-01-01T23:59:59.000Z

109

Impacts of Ethanol on Anaerobic Production of Tert-Butyl Alcohol (TBA) from Methyl Tert-Butyl Ether (MTBE) in Groundwater  

E-Print Network [OSTI]

Methyl Tert-Butyl Ether (MTBE) in Groundwater P.I. names,Methyl tert-butyl ether (MTBE) is a contaminant of concernsubsurface environments. MTBE appears to be degraded readily

Scow, K M; MacKay, Douglas

2008-01-01T23:59:59.000Z

110

Ab initio calculations of various protonation sites in perfluorodiethyl ether: Models for high temperature lubricant decomposition?  

SciTech Connect (OSTI)

Although perfluoropolyether (PFPE) lubricants have found successful application in spacecraft mechanisms and computer hard drives, there eventual breakdown is irksome, and the mechanism of decomposition is the subject of much scrutiny. However, very little notice is taken of the monomer ethers on which the polymer lubricants are based. Recently, concerted studies of the Lewis base properties of various fluorinated ethers have been performed, both from an experimental and a theoretical viewpoint. As an extension of the theoretical work, this study presents ab initio theoretical consideration of the multiple potential basic sites within perfluorodiethyl ether, (CF{sub 3}CF{sub 2}){sub 2}O, by way of the proton affinity of the molecule at various possible protonation sites (i.e., oxygen and fluorine atoms). The results indicate that although protonation at the oxygen is more energetically favored, protonation at the fluorine is not much higher in energy and provides for formation of an excellent leaving group, HF.

Ball, D.W. [Cleveland State Univ., OH (United States). Dept. of Chemistry

1995-04-01T23:59:59.000Z

111

IDENTIFYING THE USAGE PATTERNS OF METHYL TERT-BUTYL ETHER (MTBE) AND OTHER OXYGENATES IN GASOLINE USING GASOLINE  

E-Print Network [OSTI]

IDENTIFYING THE USAGE PATTERNS OF METHYL TERT-BUTYL ETHER (MTBE) AND OTHER OXYGENATES IN GASOLINE USING GASOLINE SURVEYS By Michael J. Moran, Rick M. Clawges, and John S. Zogorski U.S. Geological Survey 1608 Mt. View Rapid City, SD 57702 Methyl tert-butyl ether (MTBE) is commonly added to gasoline

112

Catalyst system and process for benzyl ether fragmentation and coal liquefaction  

DOE Patents [OSTI]

Dibenzyl ether can be readily cleaved to form primarily benzaldehyde and toluene as products, along with minor amounts of bibenzyl and benzyl benzoate, in the presence of a catalyst system comprising a Group 6 metal, preferably molybdenum, a salt, and an organic halide. Although useful synthetically for the cleavage of benzyl ethers, this cleavage also represents a key model reaction for the liquefaction of coal; thus this catalyst system and process should be useful in coal liquefaction with the advantage of operating at significantly lower temperatures and pressures.

Zoeller, J.R.

1998-04-28T23:59:59.000Z

113

Toxicity of polychlorinated diphenyl ethers in Hydra attenuata and in rat whole embryo culture  

E-Print Network [OSTI]

TOXICITY OF POLYCHLORINATED DIPHENYL ETHERS IN HYDRA A?TENUATA AND IN RAT WHOLE EMBRYO CULTURE A Thesis by MARION CAROL BECKER Submitted to the Office of Graduate Studies of Texas A8cM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1991 Major Subject: Toxicology TOXICITY OF POLYCHLORINATED DIPHENYL ETHERS IN HYDRA A1TENUATA AND IN RAT WHOLE EMBRYO CULTURE by MARION CAROL BECKER Approved as to style and content by: Stephen H. S (Ca...

Becker, Marion Carol

1991-01-01T23:59:59.000Z

114

Potential Problems with Ethylene-Vinyl Acetate for Photovoltaic Packaging (Poster)  

SciTech Connect (OSTI)

Photovoltaic (PV) devices are typically encapsulated using ethylene-vinyl acetate (EVA) to provide mechanical support electrical isolation, optical coupling, and protection against environmental exposure. Under exposure to atmospheric water and/or ultraviolet radiation, EVA will decompose to produce acetic acid, lowering the pH and increasing the surface corrosion rates of embedded devices. Even though acetic acid is produced at a very slow rate it may not take much to catalyze reactions that lead to rapid module deterioration. Another consideration is that the glass transition of EVA, as measured using dynamic mechanical analysis, begins at temperatures of about -15 C. Temperatures lower than this can be reached for extended periods of time in some climates. Due to increased moduli below the glass transition temperature, a module may be more vulnerable to damage if a mechanical load is applied by snow or wind at low temperatures. Modules using EVA should not be rated for use at such low temperatures without additional low-temperature mechanical testing beyond the scope of UL 1703.

Kempe, M. D.; Jorgensen, G. J.; Terwilliger, K, M.; McMahon, T. J.; Kennedy, C. E.; Borek, T. T.

2006-05-01T23:59:59.000Z

115

Mechanisms, Chemistry, and Kinetics of Anaerobic Biodegradation of cis-Dichloroethene and Vinyl Chloride  

SciTech Connect (OSTI)

Anaerobic biological processes can result in PCE and TCE destruction through conversion to cis-dichloroethene (cDCE) then to vinyl chloride (VC), and finally to ethene. Here, the chlorinated aliphatic hydrocarbons (CAHs) serve as electron acceptors in energy metabolism, requiring electron donors such as hydrogen from an external source. The purpose of this study was to learn more about the biochemistry of cDCE and VC conversion to ethene, to better understand the requirements for electron donors, and to determine factors affecting the rates of CAH degradation and organism growth. The biochemistry of reductive dehalogenation of VC was studied with an anaerobic mixed culture enriched on VC. In other studies on electron donor needs for dehalogenation of cDCE and VC, competition for hydrogen was found to occur between the dehalogenators and other microorganisms such as methanogens and homoacetogens in a benzoate-acclimated dehalogenating methanogenic mixed culture. Factors affecting the relative rates of destruction of the solvents and their intermediate products were evaluated. Studies using a mixed PCE-dehalogenating culture as well as the VC enrichment for biochemical studies suggested that the same species was involved in both cDCE and VC dechlorination, and that cDCE and VC competitively inhibited each other's dechlorination rate.

McCarty, P.L.; Spormann, A.M.

2000-12-01T23:59:59.000Z

116

Alternate fuels and chemicals from synthesis gas: Vinyl acetate monomer. Final report  

SciTech Connect (OSTI)

There has been a long-standing desire on the part of industry and the U.S. Department of Energy to replace the existing ethylene-based vinyl acetate monomer (VAM) process with an entirely synthesis gas-based process. Although there are a large number of process options for the conversion of synthesis gas to VAM, Eastman Chemical Company undertook an analytical approach, based on known chemical and economic principles, to reduce the potential candidate processes to a select group of eight processes. The critical technologies that would be required for these routes were: (1) the esterification of acetaldehyde (AcH) with ketene to generate VAM, (2) the hydrogenation of ketene to acetaldehyde, (3) the hydrogenation of acetic acid to acetaldehyde, and (4) the reductive carbonylation of methanol to acetaldehyde. This report describes the selection process for the candidate processes, the successful development of the key technologies, and the economic assessments for the preferred routes. In addition, improvements in the conversion of acetic anhydride and acetaldehyde to VAM are discussed. The conclusion from this study is that, with the technology developed in this study, VAM may be produced from synthesis gas, but the cost of production is about 15% higher than the conventional oxidative acetoxylation of ethylene, primarily due to higher capital associated with the synthesis gas-based processes.

Richard D. Colberg; Nick A. Collins; Edwin F. Holcombe; Gerald C. Tustin; Joseph R. Zoeller

1999-01-01T23:59:59.000Z

117

Lithium Hexamethyldisilazide-Mediated Ketone Enolization: The Influence of Hindered Dialkyl Ethers and Isostructural  

E-Print Network [OSTI]

Lithium Hexamethyldisilazide-Mediated Ketone Enolization: The Influence of Hindered Dialkyl Ethers of the enolization of 2-methylcyclohexanone mediated by lithium hexameth- yldisilazide (LiHMDS; TMS2NLi) solvated- bine to make lithium hexamethyldisilazide (LiHMDS) one of the most important Bronsted bases in organic

Collum, David B.

118

Dimethyl ether (DME) from coal as a household cooking fuel in China  

E-Print Network [OSTI]

be made from any carbonaceous feedstock, including natural gas, coal, or biomass, using establishedDimethyl ether (DME) from coal as a household cooking fuel in China Eric D. Larson Princeton gas (LPG) as a household cooking fuel. As such, DME is an attractive fuel for clean cooking. DME can

119

Viscoelastic Behavior of Poly(ether imide) Incorporated with Multiwalled Carbon Nanotubes  

E-Print Network [OSTI]

plastic, and suitable for use in many demanding applications because of its relatively high strength, high, and thermal properties of engineering plastics, including poly(ether imide) (PEI), with various nanoin; viscoelastic properties INTRODUCTION The demand for lightweight materials with high strength and thermal

Fisher, Frank

120

Treatment of Methyl tert-Butyl Ether Contaminated Water Using a Dense  

E-Print Network [OSTI]

-butyl ether (MTBE) in a dense medium plasma (DMP) reactor utilizing gas chromatog- raphy-massspectrometryandgaschromatography-thermal conductivity techniques. A rate law is developed for the removal of MTBE from an aqueous solution in the DMP. The oxidation products from the treatment of MTBE-contaminated water in the DMP reactor were found

Dandy, David

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Free radical production from the interaction of 2-chloroethyl vesicants (mustard gas) with pyridine nucleotide-driven flavoprotein electron transport systems  

SciTech Connect (OSTI)

The biochemical sequelae to chloroethyl mustard exposure correspond very well to toxic processes initiated by free radicals. Additionally, mustard solutions contain spontaneously formed cyclic onium ions which produce carbon free radicals when reduced electrochemically. Therefore, we hypothesized that the onium ions of sulfur or nitrogen mustards might produce carbon free radicals upon being reduced enzymatically, and that these radicals might constitute a metabolic activation. We set out to document radical production using an in vitro metabolic system and electron paramagnetic resonance (EPR). Our system consisted of NADPH, one of several pyridine nucleotide-driven flavoprotein reductases, cytochrome c as a terminal electron acceptor, various sulfur or nitrogen mustards and the spin trap {alpha}-[4-pyridyl-1-oxide]-N-tert-butylnitrone in buffer. Reactions were started by adding the reductase to the other materials, vortexing and immediately transferring the mixture to a 10 mm EPR flat cell. Repeated scans on a Bruker ESP 300E EPR spectrometer produced a triplet of doublets with hyperfine splitting constants of a{sub N} = 15.483 G and a{sub H} = 2.512 G. The outcome supported our hypothesis that carbon-centered free radicals are produced when mustard-related onium ions are enzymatically reduced. The EPR results varied little with the chloroethyl compound used or with porcine or human cytochrome P450 reductase, the reductase domain of rat brain neuronal nitric oxide synthase or rat liver thioredoxin reductase. Our results offer new insight into the basis for mustard-induced vesication and the outcome of exposure to different mustards. The free radical model provides an explanation for similarities in the lesions arising from mustard exposure and energy-based lesions such as those from heat, ultraviolet and nuclear radiation as well as damage across tissue types such as skin, eyes or airway epithelium.

Brimfield, A.A. [U.S. Army Medical Research Institute of Chemical Defense, Aberdeen Proving Ground, MD, 21010 (United States)], E-mail: alan.a.brimfield@us.army.mil; Mancebo, A.M. [U.S. Army Medical Research Institute of Chemical Defense, Aberdeen Proving Ground, MD, 21010 (United States); Mason, R.P.; Jiang, J.J.; Siraki, A.G. [Laboratory of Pharmacology and Chemistry, NIEHS, Research Triangle Park, NC, 27709 (United States); Novak, M.J. [Department of Chemistry, Florida Institute of Technology, Melbourne, FL, 32901 (United States)

2009-01-01T23:59:59.000Z

122

Assessment of ether and alcohol fuels from coal. Volume 2. Technical report  

SciTech Connect (OSTI)

A unique route for the indirect liquefaction of coal to produce transportation fuel has been evaluated. The resultant fuel includes alkyl tertiary alkyl ethers and higher alcohols, all in the gasoline boiling range. When blended into gasoline, the ether fuel provides several advantages over the lower alcohols: (1) lower chemical oxygen content, (2) less-severe water-separation problems, and (3) reduced front-end volatility effects. The ether fuel also has high-octane quality. Further, it can be utilized as a gasoline substitute in all proportions. Production of ether fuel combines several steps, all of which are or have been practiced on an industrial scale: (1) coal gasification, (2) gas cleanup and shift to desired H/sub 2/:CO ratio, (3) conversion of synthesis gas to isobutanol, methanol, and higher alcohols, (4) separation of alcohols, (5) chemical dehydration of isobutanol to isobutylene, and (6) etherification of isobutylene with methanol. A pilot-plant investigation of the isobutanol synthesis step was performed. Estimates of ether-fuel manufacturing costs indicate this process route is significantly more costly than synthesis of methanol. However, the fuel performance features provide incentive for developing the necessary process and catalyst improvements. Co-production of higher-molecular-weight co-solvent alcohols represents a less-drastic form of methanol modification to achieve improvement in the performance of methanol-gasoline blends. Costs were estimated for producing several proportions of methanol plus higher alcohols from coal. Estimated fuel selling price increases regularly but modestly with higher alcohol content.

Not Available

1983-03-01T23:59:59.000Z

123

Synthesis and characterization of redox polymers of (M(4-vinyl-4 prime -methyl-2,2 prime -bipyridine) sub 3 )(PF sub 6 ) sub 2 (M = Ru, Os)  

SciTech Connect (OSTI)

The authors have prepared polymers of (M(vbpy){sub 3}(PF{sub 6}){sub 2}) (M = Ru, Os) (vbpy = 4-vinyl-4{prime}-methyl-2,2{prime}-bipyridine) in solution via free-radical polymerization and fractionated them according to molecular weight using size exclusion chromatography. Different fractions have been characterized by electrochemical and spectroscopic means. The authors find that whereas for the osmium containing polymers the relative polymer size varies in proportion to the number of vinyl groups consumed during the polymerization reaction, the same is not true for the analogous ruthenium polymers. In addition, the emission energy of both the ruthenium and osmium polymers is also related to the concentration of residual vinyl groups in the polymer. Upon polymerization, there is a shift in the emission toward higher energies. Electrochemically determined diffusion coefficients are consistent with the relative size of the various fractions.

Bommarito, S.L.; Lowery-Bretz, S.P.; Abruna, H.D. (Cornell Univ., Ithaca, NY (United States))

1992-02-05T23:59:59.000Z

124

Process to convert biomass and refuse derived fuel to ethers and/or alcohols  

DOE Patents [OSTI]

A process is described for conversion of a feedstock selected from the group consisting of biomass and refuse derived fuel (RDF) to provide reformulated gasoline components comprising a substantial amount of materials selected from the group consisting of ethers, alcohols, or mixtures thereof, comprising: drying said feedstock; subjecting said dried feedstock to fast pyrolysis using a vortex reactor or other means; catalytically cracking vapors resulting from said pyrolysis using a zeolite catalyst; condensing any aromatic byproduct fraction; catalytically alkylating any benzene present in said vapors after condensation; catalytically oligomerizing any remaining ethylene and propylene to higher olefins; isomerizing said olefins to reactive iso-olefins; and catalytically reacting said iso-olefins with an alcohol to form ethers or with water to form alcohols. 35 figs.

Diebold, J.P.; Scahill, J.W.; Chum, H.L.; Evans, R.J.; Rejai, B.; Bain, R.L.; Overend, R.P.

1996-04-02T23:59:59.000Z

125

Process to convert biomass and refuse derived fuel to ethers and/or alcohols  

DOE Patents [OSTI]

A process for conversion of a feedstock selected from the group consisting of biomass and refuse derived fuel (RDF) to provide reformulated gasoline components comprising a substantial amount of materials selected from the group consisting of ethers, alcohols, or mixtures thereof, comprising: drying said feedstock; subjecting said dried feedstock to fast pyrolysis using a vortex reactor or other means; catalytically cracking vapors resulting from said pyrolysis using a zeolite catalyst; condensing any aromatic byproduct fraction; catalytically alkylating any benzene present in said vapors after condensation; catalytically oligomerizing any remaining ethylene and propylene to higher olefins; isomerizing said olefins to reactive iso-olefins; and catalytically reacting said iso-olefins with an alcohol to form ethers or with water to form alcohols.

Diebold, James P. (Lakewood, CO); Scahill, John W. (Evergreen, CO); Chum, Helena L. (Arvada, CO); Evans, Robert J. (Lakewood, CO); Rejai, Bahman (Lakewood, CO); Bain, Richard L. (Golden, CO); Overend, Ralph P. (Lakewood, CO)

1996-01-01T23:59:59.000Z

126

Kinetics of liquid phase catalytic dehydration of methanol to dimethyl ether  

SciTech Connect (OSTI)

This paper reports the kinetics of the liquid phase catalytic dehydration of methanol to dimethyl ether investigated. The experiments were carried out under low concentrations of feed in a 1-L stirred autoclave, according to a statistical experimental design. The inert liquid phase used for this investigation was a 78:22 blend of paraffinic and naphthenic mineral oils. A complete thermodynamic analysis was carried out in order to determine the liquid phase concentrations of the dissolved species. A global kinetic model was developed for the rate of dimethyl ether synthesis in terms of the liquid phase concentration of methanol. The activation energy of the reaction was found to be 18,830 cal/gmol. Based on a step-wise linear regression analysis of the kinetic data, the order of the reaction which gave the best fit was 0.28 with respect to methanol.

Gogate, M.R.; Lee, B.G.; Lee, S. (Akron Univ., OH (USA). Dept. of Chemical Engineering); Kulik, C.J. (Electric Power Research Inst., Palo Alto, CA (USA))

1990-01-01T23:59:59.000Z

127

2[prime] and 3[prime] Carboranyl uridines and their diethyl ether adducts  

DOE Patents [OSTI]

A process is described for preparing carboranyl uridine nucleoside compounds and their diethyl ether adducts, which exhibit a tenfold increase in boron content over prior art boron containing nucleoside compounds. The carboranyl uridine nucleoside compounds exhibit enhanced lipophilicity and hydrophilic properties adequate to enable solvation in aqueous media for subsequent incorporation of the compounds in methods for boron neutron capture therapy in mammalian tumor cells. No Drawings

Soloway, A.H.; Barth, R.F.; Anisuzzaman, A.K.; Alam, F.; Tjarks, W.

1992-12-15T23:59:59.000Z

128

Multiple steady states during reactive distillation of methyl tert-butyl ether  

SciTech Connect (OSTI)

This paper presents results of computer simulations of the synthesis of methyl tert-butyl ether (MTBE) in a fixed-bed reactor and in a reactive distillation column. These calculations clearly showed the advantages of MTBE synthesis in a catalytic distillation tower. Furthermore, the computer simulations showed that multiple steady states may occur in the reactive distillation column during MTBE synthesis in a broad range of operating conditions. An analysis of some sensitivity studies is presented.

Nijhuis, S.A. (Univ. of Amsterdam (Netherlands). Chemical Engineering Dept.); Kerkhof, F.P.J.M.; Mak, A.N.S. (Comprimo Engineers and Contractors, Amsterdam (Netherlands))

1993-11-01T23:59:59.000Z

129

Molecular modeling of the morphology and transport properties of two direct methanol fuel cell membranes: phenylated sulfonated poly(ether ether ketone ketone) versus Nafion  

SciTech Connect (OSTI)

We have used molecular dynamics simulations to examine membrane morphology and the transport of water, methanol and hydronium in phenylated sulfonated poly ether ether ketone ketone (Ph-SPEEKK) and Nafion membranes at 360 K for a range of hydration levels. At comparable hydration levels, the pore diameter is smaller, the sulfonate groups are more closely packed, the hydronium ions are more strongly bound to sulfonate groups, and the diffusion of water and hydronium is slower in Ph-SPEEKK relative to the corresponding properties in Nafion. The aromatic carbon backbone of Ph-SPEEKK is less hydrophobic than the fluorocarbon backbone of Nafion. Water network percolation occurs at a hydration level ({lambda}) of {approx}8 H{sub 2}O/SO{sub 3}{sup -}. At {lambda} = 20, water, methanol and hydronium diffusion coefficients were 1.4 x 10{sup -5}, 0.6 x 10{sup -5} and 0.2 x 10{sup -5} cm{sup 2}/s, respectively. The pore network in Ph-SPEEKK evolves dynamically and develops wide pores for {lambda} > 20, which leads to a jump in methanol crossover and ion transport. This study demonstrates the potential of aromatic membranes as low-cost challengers to Nafion for direct methanol fuel cell applications and the need to develop innovative strategies to combat methanol crossover at high hydration levels.

Devanathan, Ramaswami; Idupulapati, Nagesh B.; Dupuis, Michel

2012-08-14T23:59:59.000Z

130

Oxidation of methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) by ozone and combined ozone/hydrogen peroxide  

SciTech Connect (OSTI)

The aim of this work was to study the reaction of ozone and combined ozone/hydrogen peroxide on oxygenated additives such as methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) in dilute aqueous solution using controlled experimental conditions. Experiments conducted in a semi-continuous reactor with MTBE and ETBE in combination (initial concentration: 2 mmol/L of each) showed that ETBE was better eliminated than MTBE with both ozone and combined O[sub 3]/H[sub 2]O[sub 2]. batch experiments led to the determination of the ratio of the kinetic constants for the reaction of OH[degree]-radical with MTBE and ETBE (k[sub OH[degree]/ETBE]/k[sub OH[degree]//MTBE] = 1.7). Tert-butyl formate and tert-butyl acetate were identified as the ozonation byproducts of MTBE an ETBE, respectively, while tert-butyl alcohol was found to be produced during the ozonation of both compounds. 10 refs., 10 figs., 1 tab.

Leitner, N.K.V.; Papailhou, A.L.; Croue, J.P.; Dore, M. (Univ. de Poitiers (France)); Peyrot, J. (British Petroleum, Harfleur (France))

1994-01-01T23:59:59.000Z

131

Observation on the biodegradation and bioremediation potential of methyl t-butyl ether  

SciTech Connect (OSTI)

There have been few reports documenting evidence for the biodegradation of the fuel oxygenate alkyl ether, methyl t-butyl ether (MTBE) in groundwater, soils, and biosludges. Partial (or complete) microbial breakdown of MTBE has been observed in an anaerobic subsoil, a river sediment under methanogenic conditions, a cyclohexane-degrading bacterial consortium and a pure culture of the methylotroph, Methylisnus trichosporium OB3b. An aerobic bacterial enrichment (BC-1) isolated from an industrial transient (non-accumulating) metabolic intermediate. The studies suggest that MTBE is cleaved by BC-1 to TBA which is then metabolized via isopropanol and acetone. There is little information on the occurrence of indigenous MTBE-degraders in groundwater, soils and activated sludges. Preliminary evidence has been obtained, however, from a marketing terminal groundwater site that naturally-occurring MTBE-degraders are present in some monitoring wells. Microcosm experiments with groundwater from this aquifer show that MTBE is aerobically degraded (no TBA formed) with a first-order decay rate (0.31/day) similar to BTEX. Also, MTBE did not inhibit the intrinsic biodegradation potential of BTEX in groundwater microcosms. In summary, the data presented indicate that MTBE biodegradation has been observed in some environmental media. Further work is needed to assess the feasibility of using indigenous or derived aerobic and anaerobic MTBE-degrading cultures for treating fuel ethers in groundwaters or wastewater with in-situ or ex-situ bioremediation technologies.

Salanitro, J.; Wisniewski, H.; McAllister, P. [Shell Development Co., Houston, TX (United States)

1995-12-31T23:59:59.000Z

132

Ionization and dissociation dynamics of vinyl bromide probed by femtosecond extreme ultraviolet transient absorption spectroscopy  

SciTech Connect (OSTI)

Strong-field induced ionization and dissociation dynamics of vinyl bromide, CH{sub 2}=CHBr, are probed using femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy. Strong-field ionization is initiated with an intense femtosecond, near infrared (NIR, 775 nm) laser field. Femtosecond XUV pulses covering the photon energy range of 50-72 eV probe the subsequent dynamics by measuring the time-dependent spectroscopic features associated with transitions of the Br (3d) inner-shell electrons to vacancies in molecular and atomic valence orbitals. Spectral signatures are observed for the depletion of neutral C{sub 2}H{sub 3}Br, the formation of C{sub 2}H{sub 3}Br{sup +} ions in their ground (X{sup ~}) and first excited (A{sup ~}) states, the production of C{sub 2}H{sub 3}Br{sup ++} ions, and the appearance of neutral Br ({sup 2}P{sub 3/2}) atoms by dissociative ionization. The formation of free Br ({sup 2}P{sub 3/2}) atoms occurs on a timescale of 330 150 fs. The ionic A{sup ~} state exhibits a time-dependent XUV absorption energy shift of ?0.4 eV within the time window of the atomic Br formation. The yield of Br atoms correlates with the yield of parent ions in the A{sup ~} state as a function of NIR peak intensity. The observations suggest that a fraction of vibrationally excited C{sub 2}H{sub 3}Br{sup +} (A{sup ~}) ions undergoes intramolecular vibrational energy redistribution followed by the CBr bond dissociation. The C{sub 2}H{sub 3}Br{sup +} (X{sup ~}) products and the majority of the C{sub 2}H{sub 3}Br{sup ++} ions are relatively stable due to a deeper potential well and a high dissociation barrier, respectively. The results offer powerful new insights about orbital-specific electronic processes in high field ionization, coupled vibrational relaxation and dissociation dynamics, and the correlation of valence hole-state location and dissociation in polyatomic molecules, all probed simultaneously by ultrafast table-top XUV spectroscopy.

Lin, Ming-Fu; Neumark, Daniel M. [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States) [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Chemistry, University of California, Berkeley, California 94720 (United States); Gessner, Oliver [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)] [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Leone, Stephen R. [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States) [Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Chemistry, University of California, Berkeley, California 94720 (United States); Department of Physics, University of California, Berkeley, California 94720 (United States)

2014-02-14T23:59:59.000Z

133

Nonlinear optical properties of ZnO/poly (vinyl alcohol) nanocomposite films  

SciTech Connect (OSTI)

Extensive studies have already been reported on the optical characteristics of ZnO/polymer nanocomposite films, using a variety of polymers including transparent polymers such as polystyrene, polymethyl methacrylate etc and many interesting results have been established regarding the non linear optical characteristics of these systems. Poly (vinyl alcohol)(PVA) is a water soluble polymer. Though the structural and optical studies of ZnO/PVA nanocomposite films have already been investigated, there are no detailed reports on the nonlinear optical characteristics of ZnO/PVA nanocomposite films, irrespective of the fact that these nanocomposite films can be synthesized using quite easy and cost effective methods. The present work is an attempt to study in detail the nonlinear optical behaviour of ZnO/PVA nanocomposite films using Z-scan technique. Highly transparent ZnO/PVA nanocomposite films were prepared from the ZnO incorporated PVA solution in water using spin coating technique. The ZnO nanoparticles were synthesized by the simple chemical route at room temperature. High-resolution transmission electron microscopy studies show that the ZnO nanoparticles are of size around 10 nm. The ZnO/PVA nanocomposite films were structurally characterized by X-ray diffraction technique, from which the presence of both PVA and ZnO in the nanocomposite was established. The optical absorptive nonlinearity in the nanocomposite films was investigated using open aperture Z-scan technique. The results indicate optical limiting type nonlinearity in the films due to two photon absorption in ZnO with efficiency more than 50%. These films also show a self defocusing type negative nonlinear refraction in closed aperture Z-scan experiment. The present studies indicate that, highly transparent and homogeneous films of ZnO/PVA nanocomposite can be obtained on glass substrates using simple methods, in a highly cost effective way, since PVA is water soluble. These nanocomposite films offer prospects of application as efficient optical limiters to protect light sensitive devices from the possible damage on exposure to high intensity radiation.

Jeeju, P. P., E-mail: jeejupp@gmail.com [Department of Physics, S N M College, Maliankara, Ernakulam, Kerala (India); Jayalekshmi, S., E-mail: jayalekshmi@cusat.ac.in [Division for Research in Advanced Materials, Department of Physics, Cochin University of Science and Technology, Kochi 682 022 (India); Chandrasekharan, K. [Department of Physics, National Institute of Technology, Calicut, Kerala (India)

2014-01-28T23:59:59.000Z

134

3 Micro-mechanics based derivation of the materials constitutive 4 relations for carbon-nanotube reinforced poly-vinyl-ester-epoxy  

E-Print Network [OSTI]

, carbon nanotube-reinforced polymer-ma- 45trix composite) materials have spurred considerable 46interest relations for carbon-nanotube reinforced poly-vinyl-ester-epoxy 5 based composites 6 Mica Grujicic Y. P. Sun mechanical reinforcements for 59lightweight composite systems. However, the material 60and the processing

Grujicic, Mica

135

The formation of PdCx over Pd-based catalysts in vapor-phase vinyl acetate synthesis: does a PdAu alloy catalyst resist carbide formation?  

E-Print Network [OSTI]

­Au alloy catalyst resist carbide formation? Y.-F. Han, D. Kumar, C. Sivadinarayana, A. Clearfield, and D October 2003; accepted 24 February 2004 The formation of Pd carbide (PdCx) during the synthesis of vinyl­Au/SiO2; XRD. 1. Introduction The formation of carbides over supported Pd catalysts was first reported

Goodman, Wayne

136

Development of a copper-catalyzed amidation-base-promoted cyclization sequence for the synthesis of 2-aryl- and 2-vinyl1-4 quinolones  

E-Print Network [OSTI]

A direct two-step method for the preparation of 2-aryl- and 2-vinyl-4-quinolones that utilizes a copper-catalyzed amidation of ortho-halophenones followed by a base-promoted Camps cyclization of the resulting N-(2-keto-aryl)amides ...

Jones, Carrie Preston

2007-01-01T23:59:59.000Z

137

Journal of Materials Science, 2012, 47(14): p. 5596-5604 Thermal expansion behavior of hollow glass particle/vinyl ester composites  

E-Print Network [OSTI]

with the addition of glass microballoons for the twelve compositions of syntactic foams characterized using glass particle/vinyl ester composites Vasanth Chakravarthy Shunmugasamy, Dinesh Pinisetty and Nikhil filled composites (syntactic foams), the coefficient of thermal expansion (CTE) can be controlled by two

Gupta, Nikhil

138

High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, April--June 1992  

SciTech Connect (OSTI)

The objective of the proposed research is to synthesize high octane ethers, primarily methyl isobutyl ether (MIBE) and methyl tertiary butyl ether (MTBE), directly from H{sub 2}/CO/CO{sub 2} coal-derived synthesis gas via alcohol mixtures that are rich in methanol and 2-methyl-l-propanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. The last stage of the synthesis involves direct coupling of synthesis gas-derived methanol and isobutanol that has been demonstrated by us to occur over superacid catalysts to yield methyl isobutyl ether (MIBE) at moderate pressures and a mixture of methanol and isobutene at low pressures. MIBE is an isomer of MTBE and a process is proposed whereby MTBE from the two alcohols is maximized and MIBE is minimized. This will be achieved by the proper choice of reaction conditions, i.e. intermediate pressures, and of inorganic acid catalysts that are stable at temperatures higher than 200{degree}C, at which the carbonium ion reaction coupling of the two alcohols to MTBE is more effective than the oxonium ion or ester reaction coupling to MIBE. Both organic and inorganic catalysts will be investigated, and the better catalysts of these classes will be subjected to long term performance studies. The long term performance studies of the combined process will extend to 1000 hr and detailed analytical data for all products will be provided.

Klier, K.; Herman, R.G.; Feeley, O.C.; Johansson, M.A.

1992-07-01T23:59:59.000Z

139

Osha`s 1974 vinyl chloride standard. Retrospective evaluation of the rulemaking`s feasibility/impact estimates. Case study  

SciTech Connect (OSTI)

This report documents a case study of the Occupational Safety and Health Administration`s (OSHA) permanent health standard of 1974 for workplace exposures to vinyl chloride (monomer). OSHA`s assessment of hazard control options and estimates of compliance costs and other regulatory impacts prepared as part of the rationale for the rulemaking are reviewed and then compared and contrasted with the actual post-promulgation outcomes as affected industries adjusted to the new compliance requirements. This case study has been prepared as part of a larger Office of Technology Assessment (OTA) evaluation of the control technology and regulatory impact analyses that OSHA prepares to support its rulemakings. Congress requested in May 1992 that OTA examine OSHA`s procedures and methods in these regards. The case reported here is one of eight OSHA health and safety standards that have been similarly studied on a pre- and post-promulgation basis.

Boroush, M.A.

1993-11-01T23:59:59.000Z

140

Measurement of methyl-tert-butyl-ether (MTBE) in raw drinking water  

SciTech Connect (OSTI)

In order to assess the pathways for human exposure to methyl-tert-butyl-ether (MTBE) and to understand the extent of MTBE contamination in watersheds, a purge and trap gas chromatographic mass spectrometric method to measure part-per-trillion (ppt) concentrations of MTBE in environmental waters was developed. A variety of California's raw drinking waters were analyzed. No detectable MTBE was found in deep groundwater (>1000 feet). However shallow groundwater ({approx}250 feet) contained MTBE concentrations of non-detect to 1300 ppt. MTBE concentrations measured in rivers and lakes ranged from non-detect to 3500 ppt. East (San Francisco) Bay area rain water contained approximately 80 ppt MTBE.

Davisson, M L; Koester, C J; Moran, J E

1999-10-14T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, April--June 1993  

SciTech Connect (OSTI)

The results shown in Figures 10 and 11 demonstrate that the formation of butenes was very sensitive to the alcohol partial pressure. A small elevation of the alcohol pressure suppressed the formation of butenes rather drastically at both 90 and 117{degree}C. The synthesis rates of DME, MIBE, and MTBE ethers were not significantly affected at 90{degree}C, although there was a trend to increase the space time yield of DME as the alcohol pressure was increased. At the reaction temperature of 117{degree}C, all of the ethers showed increasing productivities as the pressure of the reactants was increased (Figure 11). An isotope labelling experiment was carried out to provide mechanistic insight into the manner in which methanol and isobutanol react together to form DME, MIBE, and MTBE ethers and to determine if MTBE were derived from MIBE.

Klier, K.; Herman, R.G.; Menszak, J.; Johansson, M.A.; Feeley, O.C.; Kim, D.

1993-07-01T23:59:59.000Z

142

Commercial-scale demonstration of the Liquid Phase Methanol (LPMEOH{trademark}) Process. Peroxide formation of dimethyl ether in methanol mixtures  

SciTech Connect (OSTI)

Organic peroxides could form when dimethyl ether in methanol is stored for three to six months at a time. The objective of this work was to determine the level of peroxide formation from dimethyl ether in reagent grade methanol and raw methanol at room temperature under 3 atmospheres (45 psig) of air. Raw methanol is methanol made from syngas by the LPMEOH Process without distillation. Aliphatic ethers tend to react slowly with oxygen from the air to form unstable peroxides. However, there are no reports on peroxide formation from dimethyl ether. After 172 days of testing, dimethyl ether in either reagent methanol or raw methanol at room temperature and under 60--70 psig pressure of air does not form detectable peroxides. Lack of detectable peroxides suggests that dimethyl ether or dimethyl ether and methanol may be stored at ambient conditions. Since the compositions of {approximately} 1.3 mol% or {approximately} 4.5 mol% dimethyl ether in methanol do not form peroxides, these compositions can be considered for diesel fuel or an atmospheric turbine fuel, respectively.

Waller, F.J.

1997-11-01T23:59:59.000Z

143

Calixarene crown ether solvent composition and use thereof for extraction of cesium from alkaline waste solutions  

DOE Patents [OSTI]

A solvent composition and corresponding method for extracting cesium (Cs) from aqueous neutral and alkaline solutions containing Cs and perhaps other competing metal ions is described. The method entails contacting an aqueous Cs-containing solution with a solvent consisting of a specific class of lipophilic calix[4]arene-crown ether extractants dissolved in a hydrocarbon-based diluent containing a specific class of alkyl-aromatic ether alcohols as modifiers. The cesium values are subsequently recovered from the extractant, and the solvent subsequently recycled, by contacting the Cs-containing organic solution with an aqueous stripping solution. This combined extraction and stripping method is especially useful as a process for removal of the radionuclide cesium-137 from highly alkaline waste solutions which are also very concentrated in sodium and potassium. No pre-treatment of the waste solution is necessary, and the cesium can be recovered using a safe and inexpensive stripping process using water, dilute (millimolar) acid solutions, or dilute (millimolar) salt solutions. An important application for this invention would be treatment of alkaline nuclear tank wastes. Alternatively, the invention could be applied to decontamination of acidic reprocessing wastes containing cesium-137.

Moyer, Bruce A. (Oak Ridge, TN); Sachleben, Richard A. (Knoxville, TN); Bonnesen, Peter V. (Knoxville, TN); Presley, Derek J. (Ooltewah, TN)

2001-01-01T23:59:59.000Z

144

Review of the environmental behavior and fate of methyl tert-butyl ether  

SciTech Connect (OSTI)

A review of pertinent equations and current research indicates that when gasoline oxygenated with methyl tert-butyl ether (MTBE) comes into contact with water, large amounts of MTBe can dissolve. At 25 C, the water solubility of MTBE is about 5,000 mg/L for a gasoline that is 10% MTBE by weight, whereas for a nonoxygenated gasoline, the total hydrocarbon solubility in water is typically about 120 mg/L. Methyl tert-butyl ether sorbs only weakly to subsurface solids; therefore, sorption does not substantially retard the transport of MTBE by ground water. In addition, MTBE generally resists biodegradation in ground water. The half-life of MTBE in the atmosphere can be as short as 3 d in a regional airshed. In the air, MTBE tends to partition into atmospheric water, including precipitation. However, the washing out of gas-phase MTBE by precipitation will not, by itself, greatly alter the gas-phase concentration of the compound in the air. The partitioning of MTBE to precipitation can nevertheless result in concentrations as high as 3 {micro}g/L or more in urban precipitation and can contribute to the presence of MTBE in surface and ground water.

Squillace, P.J.; Zogorski, J.S. [Geological Survey, Rapid City, SD (United States); Pankow, J.F. [Oregon Graduate Inst. of Science and Technology, Beaverton, OR (United States). Dept. of Environmental Science and Engineering; Korte, N.E. [Oak Ridge National Lab., TN (United States). Environmental Science Div.

1997-09-01T23:59:59.000Z

145

Acute toxicity of methyl-tertiary-butyl ether (MTBE) to aquatic organisms  

SciTech Connect (OSTI)

Due to the recent amendment of the Clean Air Act, oxygenates are now being added to gasolines to boost octane and reduce air pollution from combustion in heavily populated areas. Oxygenates such as alcohols (i.e. methanol) and ethers (methyl-tertiary-butyl ether, MTBE) are commonly being used. A series of bioassay studies have been conducted with MTBE, one of the most commonly used octane-enhancing additives. Freshwater and marine studies were conducted with fish, invertebrates and algae to determine the impact of this material on the environment following accidental spills. Static-renewal studies were run to ensure maintenance of MTBE, a highly volatile material in the test containers. Chemical confirmation of exposure concentrations demonstrated the adequacy of the exposure system. Mysid shrimp were highly sensitive to MTBE, with significantly less effect observed with the other species evaluated. These data have implications for spill response, particularly since MTBE is slow to biodegrade and will rapidly move through groundwater. Comparative data for other oxygenates will also be discussed.

BenKinney, M.T.; Barbieri, J.F.; Gross, J.S.; Naro, P.A. [Stonybrook Labs. Inc., Princeton, NJ (United States)

1994-12-31T23:59:59.000Z

146

Treatment of methyl t-butyl ether contaminated water using a dense medium plasma reactor, a mechanistic and kinetic investigation  

E-Print Network [OSTI]

and oxidation mechanisms of methyl t-butyl ether (MTBE) in a dense medium plasma (DMP) reactor utilizing gas for the removal of MTBE from an aqueous solution in the DMP reactor. Rate constants are also derived for three reactor configurations and two pin array spin rates. The oxidation products from the treatment of MTBE

Dandy, David

147

Title: Decomposition of ethanol and dimethyl-ether during CVD synthesis of single-walled carbon nanotubes  

E-Print Network [OSTI]

of ethanol and dimethyl-ether during CVD synthesis of single-walled carbon nanotubes Author list: Bo Hou (single-walled carbon nanotubes) was investigated. Gas-phase thermal decomposition of ethanol and DME ethanol and DME decomposition, confirming expected reaction trends and primary byproducts. Peak

Maruyama, Shigeo

148

Process for the production of ethylidene diacetate from dimethyl ether using a heterogeneous catalyst  

DOE Patents [OSTI]

This invention relates to a process for producing ethylidene diacetate by the reaction of dimethyl ether, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for 3 consecutive runs without loss in activity.

Ramprasad, D.; Waller, F.J.

1998-04-28T23:59:59.000Z

149

Use of aluminum phosphate as the dehydration catalyst in single step dimethyl ether process  

DOE Patents [OSTI]

The present invention pertains to a process for the coproduction of methanol and dimethyl ether (DME) directly from a synthesis gas in a single step (hereafter, the "single step DME process"). In this process, the synthesis gas comprising hydrogen and carbon oxides is contacted with a dual catalyst system comprising a physical mixture of a methanol synthesis catalyst and a methanol dehydration catalyst. The present invention is an improvement to this process for providing an active and stable catalyst system. The improvement comprises the use of an aluminum phosphate based catalyst as the methanol dehydration catalyst. Due to its moderate acidity, such a catalyst avoids the coke formation and catalyst interaction problems associated with the conventional dual catalyst systems taught for the single step DME process.

Peng, Xiang-Dong (Allentown, PA); Parris, Gene E. (Coopersburg, PA); Toseland, Bernard A. (Allentown, PA); Battavio, Paula J. (Allentown, PA)

1998-01-01T23:59:59.000Z

150

Process for the production of ethylidene diacetate from dimethyl ether using a heterogeneous catalyst  

DOE Patents [OSTI]

This invention relates to a process for producing ethylidene diacetate by the reaction of dimethyl ether, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for 3 consecutive runs without loss in activity.

Ramprasad, Dorai (Allentown, PA); Waller, Francis Joseph (Allentown, PA)

1998-01-01T23:59:59.000Z

151

Why methyl tert-butyl ether production by reactive distillation may yield multiple solutions  

SciTech Connect (OSTI)

This paper presents an explanation of why methyl tert-butyl ether (MTBE) production by reactive distillation may yield multiple solutions. Widely different composition profiles and conversions may, as already reported by Krishna and others, results with identical column specifications, depending on the initial estimates provided. A hypothesis yielding a qualitative understanding of this phenomenon has been developed. The inert n-butene plays a key role in the proposed explanation: As the reaction mixture is diluted with n-butene, the activity coefficient of methanol increases substantially and the temperature decreases. This dilution has a profound effect on the equilibrium conversion, enabling MTBE to escape from the reactive zone without decomposition. When methanol is fed below or in the lower part of the reactive zone of the column, the ``lifting capacity`` of the minimum boiling point MTBE-methanol azeotrope will also be important.

Hauan, S.; Hertzberg, T.; Lien, K.M. [Univ. of Trondheim (Norway)

1995-03-01T23:59:59.000Z

152

Mortality and cancer morbidity in workers exposed to low levels of vinyl chloride monomer at a polyvinyl chloride processing plant  

SciTech Connect (OSTI)

To study whether exposure to low levels of vinyl chloride monomer (VCM) causes increased risk for cancer morbidity and death from ischemic heart disease, a cohort study was performed among 2,031 male workers at a polyvinyl chloride (PVC) processing plant who had been employed for at least 3 months during the period 1945-1980. An almost significantly increased total mortality (SMR = 116, 95% CI 99-136) was found. Deaths caused by violence or intoxication were significantly increased (SMR = 153, 95% CI 109-213), but not deaths from ischemic heart disease (SMR = 100, 95% CI 73-135). A significant increase in total cancer morbidity was observed (SMR = 128, 95% CI 101-161). Respiratory cancers were significantly increased (SMR = 213, 95% CI 127-346). Furthermore, six brain tumors (vs. 2.6 expected) were observed. This increase, however, was not significant (SMR = 229, 95% CI 84-498). No liver hemangiosarcoma was observed. Applying a latency period of greater than or equal to 10 years from start of employment did not change the risk patterns. There were no significant exposure-response associations between exposure estimates for VCM, asbestos, and plasticizers and cancer morbidity.

Hagmar, L.; Akesson, B.; Nielsen, J.; Andersson, C.; Linden, K.; Attewell, R.; Moeller, T. (University Hospital, Lund (Sweden))

1990-01-01T23:59:59.000Z

153

Study of vinyl chloride formation at landfill sites in California. Final report, 16 July 1985-15 January 1987  

SciTech Connect (OSTI)

The purpose of this study was to determine if vinyl chloride (VC) detected in air above California landfills is produced in situ. Experiments were performed with N and S California landfill samples and anaerobic-digestor sewage sludge. Test materials were incubated with various chlorocarbons and with /sup 13/C-trichloroethylene (TCE) to confirm biological production of /sup 13/C-VC. These experiments confirmed the biological dechlorination of chloroethylenes as the most likely route for VC emission from landfills, rather than chemical or photochemical routes, or PVC degradation. Leaching from PVC could be a minor source of VC, though there was less than 0.1% (estimated) plastic in the landfill samples, containing at most 330 ppm of VC monomer. A landfill sample known to produce VC was used to start an anaerobic chemostat using methanol as sole carbon source. The enriched culture resulting was homogeneous, and when incubated with /sup 13/C-TCE, produced (13)C-VC, confirmed by GC/MS.

Molton, P.M.; Hallen, R.T.; Payne, J.W.

1987-01-01T23:59:59.000Z

154

Coordination effect-regulated CO2 capture with an alkali metal onium salts/crown ether system  

SciTech Connect (OSTI)

A coordination effect was employed to realize equimolar CO2 absorption, adopting easily synthesized amino group containing absorbents (alkali metal onium salts). The essence of our strategy was to increase the steric hindrance of cations so as to enhance a carbamic acid pathway for CO2 capture. Our easily synthesized alkali metal amino acid salts or phenolates were coordinated with crown ethers, in which highly sterically hindered cations were obtained through a strong coordination effect of crown ethers with alkali metal cations. For example, a CO2 capacity of 0.99 was attained by potassium prolinate/18-crown-6, being characterized by NMR, FT-IR, and quantum chemistry calculations to go through a carbamic acid formation pathway. The captured CO2 can be stripped under very mild conditions (50 degrees C, N-2). Thus, this protocol offers an alternative for the development of technological innovation towards efficient and low energy processes for carbon capture and sequestration.

Yang, Zhen-Zhen [Nankai University China] [Nankai University China; Jiang, Deen [ORNL] [ORNL; Zhu, Xiang [ORNL] [ORNL; Tian, Chengcheng [ORNL] [ORNL; Brown, Suree [ORNL] [ORNL; Do-Thanh, Chi-Linh [The University of Tennessee] [The University of Tennessee; He, Liang-Nian [Nankai University China] [Nankai University China; Dai, Sheng [ORNL] [ORNL

2014-01-01T23:59:59.000Z

155

Carbon-carbon bond cleavage of 1,2-hydroxy ethers b7 vanadium(V) dipicolinate complexes  

SciTech Connect (OSTI)

The development of alternatives to current petroleum-based fuels and chemicals is becoming increasingly important due to concerns over climate change, growing world energy demand, and energy security issues. Using non-food derived biomass to produce renewable feedstocks for chemicals and fuels is a particularly attractive possibility. However, the majority of biomass is in the form of lignocellulose, which is often not fully utilized due to difficulties associated with breaking down both lignin and cellulose. Recently, a number of methods have been reported to transform cellulose directly into more valuable materials such as glucose, sorbitol, 5-(chloromethyl)furfural, and ethylene glycol. Less progress has been made with selective transformations of lignin, which is typically treated in paper and forest industries by kraft pulping (sodium hydroxide/sodium sulfide) or incineration. Our group has begun investigating aerobic oxidative C-C bond cleavage catalyzed by dipicolinate vanadium complexes, with the idea that a selective C-C cleavage reaction of this type could be used to produce valuable chemicals or intermediates from cellulose or lignin. Lignin is a randomized polymer containing methoxylated phenoxy propanol units. A number of different linkages occur naturally; one of the most prevalent is the {beta}-O-4 linkage shown in Figure 1, containing a C-C bond with 1,2-hydroxy ether substituents. While the oxidative C-C bond cleavage of 1,2-diols has been reported for a number of metals, including vanadium, iron, manganese, ruthenium, and polyoxometalate complexes, C-C bond cleavage of 1,2-hydroxy ethers is much less common. We report herein vanadium-mediated cleavage of C-C bonds between alcohol and ether functionalities in several lignin model complexes. In order to explore the scope and potential of vanadium complexes to effect oxidative C-C bond cleavage in 1,2-hydroxy ethers, we examined the reactivity of the lignin model complexes pinacol monomethyl ether (A), 2-phenoxyethanol (B), and 1,2-diphenyl-2-methoxyethanol (C) (Figure 1). Reaction of (dipic)V{sup V}(O)O{sup i}Pr (1a) or (dipic)V{sup v}(O)OEt (lb) with A, B, or C in acetonitrile yielded new vanadium(V) complexes where the alcohol-ether ligand was bound in a chelating fashion. From the reaction of 1b with pinacol monomethyl ether (A) in acetonitrile solution, (dipic)V{sup v}(O)(pinOMe) (2) (PinOMe = 2,3-dimethyl-3-methoxy-2-butanoxide) was isolated in 61 % yield. Reaction of 1b with 2-phenoxyethanol (B) in acetonitrile gave the new complex (dipic)V{sup v}(O)(OPE) (3) (OPE = 2-phenoxyethoxide), which was isolated in 76% yield. In a similar fashion, 1a reacted with 1,2-diphenyl-2-methoxyethanol (C) to give (dipic)V(O)(DPME) (4) (DPME = 1,2-diphenyl-2-methoxyethoxide), which was isolated in 39% yield. Complexes 2, 3, and 4 were characterized by {sup 1}H NMR and IR spectroscopy, elemental analysis, and X-ray crystallography. Compared to the previously reported vanadium(V) pinacolate complex (dipic)V(O)(pinOH) the X-ray structure of complex 2 reveals a slightly shorter V = O bond, 1.573(2) {angstrom} vs 1.588(2) {angstrom} for the pinOH structure. Complexes 3 and 4 display similar vanadium oxo bond distances of 1.568(2) {angstrom} and 1.576(2) {angstrom}, respectively. All three complexes show longer bonds to the ether-oxygen trans to the oxo (2.388(2) {angstrom} for 2, 2.547(2) {angstrom} for 3, and 2.438(2) {angstrom} for 4) than to the hydroxy-oxygen in the pinOH structure (2.252(2) {angstrom}).

Hanson, Susan K [Los Alamos National Laboratory; Gordon, John C [Los Alamos National Laboratory; Thorn, David L [Los Alamos National Laboratory; Scott, Brian L [Los Alamos National Laboratory; Baker, R Tom [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

156

Reactive Surfaces and Interfaces utilizing 2-Vinyl-4,4-Dimethylazlactone (VDMA): An Example of ??Click?? Chemistry  

SciTech Connect (OSTI)

Creating polymer-modified interfaces decorated with biologically-relevant materials V so-called bio-interfaces V with precise control over the nanoscale structure and properties is of increasing technological importance for a large number of advanced materials applications, including adaptive and/or lubricious biomaterial coatings, electro-actuators (synthetic muscles), biosensors with amplified response, coatings for stealth drug delivery, supports for enzymatic catalysts, protein or antibody arrays, and high affinity separation agents. The ability to design and decorate interfaces with biologically-relevant molecules and understand synthesis-structure-function relationships remains a significant challenge. The overarching objective of this research program is to investigate the polymerization and functionalization of a new class of polymeric materials that are capable of serving as a versatile platform from which bio-interfaces for specific applications can be created and evaluated. Stimuli-responsive (co)polymers containing vinyl dimethyl azlactone (VDMA) have been prepared using free radical polymerization techniques (controlled and conventional). Subsequent immobilization of biomolecules (e.g., dansylcadaverine, N ,N -bis(carboxymethyl)-L-lysine hydrate) on PVDMA-containing surface scaffolds affords bio-interfaces. Reaction of nucleophiles with the azlactone moiety proceeds rapidly, quantitatively, and in the absence of byproducts, which are essential criteria governing the click-type nature of this procedure. The conversion of these materials into polyelectrolytes and bioconjugates can be monitored in real-time using infrared spectroscopy. Additionally, pVDMA polymers prepared using reversible addition fragmentation chain transfer (RAFT) polymerization are the basis for creating polymer brushes by a grafting to approach. We will describe how compositional differences and changes in molecular weight affect the solubility and responsiveness of pVDMA-based polymers and surface layers when functionalized with various biomolecules.

Messman, Jamie M [ORNL; Kilbey, II, S Michael [ORNL; Lokitz, Bradley S [ORNL; Hinestrosa Salazar, Juan Pablo [Clemson University; Ankner, John Francis [ORNL

2009-01-01T23:59:59.000Z

157

Isobaric vapor-liquid equilibria in the systems methyl 1,1-dimethylethyl ether + hexane and + heptane  

SciTech Connect (OSTI)

The vapor-liquid equilibrium at 94 kPa has been determined for the binary systems of methyl 1,1-dimethylethyl ether (MTBE) with hexane and with heptane. Both systems deviate slightly from ideal behavior, can be described as regular solutions, and do not present an azeotrope. The activity coefficients and boiling point of the solutions were correlated with its composition by the Redlich-Kister, Wohl, Wilson, UNIQUAC, NRTL, and Wisniak-Tamir equations.

Wisniak, J.; Magen, E.; Shachar, M.; Zeroni, I.; Segura, H. [Ben-Gurion Univ. of the Negev, Beer-Sheva (Israel). Dept. of Chemical Engineering] [Ben-Gurion Univ. of the Negev, Beer-Sheva (Israel). Dept. of Chemical Engineering; Reich, R. [Univ. de Concepcion (Chile). Dept. of Chemical Engineering] [Univ. de Concepcion (Chile). Dept. of Chemical Engineering

1997-03-01T23:59:59.000Z

158

Thermophysical properties of 2,2,2-trifluoroethanol + tetraethylene glycol dimethyl ether  

SciTech Connect (OSTI)

Isothermal P,x data from 303.15 K to 423.15 K, liquid densities from 283.15 K to 423.15 K, and dynamic viscosities from 343.15 K to 393.15 K for the binary system 2,2,2-trifluoroethanol + tetraethylene glycol dimethyl ether were measured. The vapor-liquid equilibrium (VLE) data were measured. The vapor-liquid equilibrium (VLE) data were measured using a static apparatus. VLE data were correlated by the five-parameter NRTL equation, while density and kinematic viscosity data were correlated with temperature and liquid composition using empirical equations. The viscosity data used in the correlation cover the range of 293.15--393.15 K. VLE data indicate that this binary system exhibits large negative deviations from Raoult`s law. These mixtures present large exothermic excess molar enthalpies. The excess molar enthalpy calculated using the Gibbs-Helmholtz equation and the NRTL parameters was compared with experimental data existing in the literature.

Herraiz, J.; Olive, F.; Zhu, S.; Shen, S.; Coronas, A. [Univ. Rovira i Virgili, Tarragona (Spain). Dept. of Mechanical Engineering] [Univ. Rovira i Virgili, Tarragona (Spain). Dept. of Mechanical Engineering

1999-07-01T23:59:59.000Z

159

Exposure to methyl tert-butyl ether and benzene among service station attendants and operators  

SciTech Connect (OSTI)

Concerns for atmospheric pollution from auto exhaust have led to the blending of {open_quotes}oxygenates{close_quotes} with motor fuels. The most common oxygenate, methyl tert-butyl ether (MTBE) is currently required within several metropolitan areas (Denver and Phoenix) in the range of 12% of the motor fuel. Amendments to the Clean Air Act may expand this requirement to as many as 44 other areas of the United States in the near future. In consideration of the magnitude of potential uncontrolled exposures from its extensive use and a related concern involving the potential influence of MTBE blending on exposures to other constituents of gasoline (particularly benzene), an evaluation of exposures among service station attendants and operators was undertaken at the request, and in cooperation with, the American Petroleum Institute during the latter part of 1990. For application of the survey results to a broad audience, three categories or types of service stations were identified with regard to MTBE use and exposure potential: (a) service stations that do not use MTBE or use it only as an octane enhancer, (b) service stations with seasonal requirements to use 12-15% MTBE (the Denver, Colorado, and Phoenix, Arizona, metropolitan areas), and (c) service stations equipped with stage II (active) vapor recovery systems (several coastal areas, most notably Southern California). 4 refs., 4 tabs.

Hartle, R. [National Inst. for Occupational Safety and Health, Cincinnati, OH (United States)

1993-12-01T23:59:59.000Z

160

Toxicity of methyl tertiary butyl ether to Daphnia magna and photobacterium phosphoreum  

SciTech Connect (OSTI)

Methyl tertiary butyl ether (MTBE) is a liquid organic compound added to gasoline to increase its oxygen content and to reduce the emission of carbon monoxide during combustion in many urban areas. In order to meet the 1990 Clean Air Act amendments, gasoline must contain 2.7% oxygen (by weight) or 15% (by volume) of MTBE in gasoline to meet the regulations for the control of carbon monoxide emissions. Health effects caused by inhalation of MTBE include headaches, dizziness, irritated eyes and nausea; MTBE is one of cancer--causing chemicals. Intracaval injection of MTBE (0.2 mg/kg) caused the highest mortality (100%) in rats. General anesthetic effect induced by MTBE was found at or above 1200 mg/kg body weight; Rosenkranz and Klopman (1991) predicted that MTBE is neither a genotoxicant nor a carcinogen. Nevertheless, the safety of using MTBE in oxygenated fuels is now being questioned from its potential as groundwater pollutant. This study measures the toxicity of MTBE to Daphnia magna and Photobacterium phosphoreum. 13 refs.

Gupta, G.; Lin, Y.J. [Univ. of Maryland Eastern Shore, Princess Anne, MD (United States)

1995-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Reaction calorimetry study of the liquid-phase synthesis of tert-butyl methyl ether  

SciTech Connect (OSTI)

The liquid-phase addition of methanol to isobutene to give tert-butyl methyl ether (MTBE) on the ion-exchange resin Lewatit K2631 has been studied in a calorimetric reactor. Heat capacity of MTBE and enthalpy of the MTBE synthesis reaction in the temperature range 312--333 K have been determined. MTBE heat capacity in the liquid phase has been found to obey the equation c[sub P] (J/mol[center dot]K) = 472.34 [minus] 2.468(T/K) + 0.005071(T/K)[sup 2]. At 298 K the standard molar reaction enthalpy is [Delta]H[degree] = [minus]33.8 kJ/mol. A method to estimate apparent activation energies from heat flow rate in a given reaction has been developed and proved to be valid for the MTBE synthesis. Using this method, an apparent activation energy of 91.1--95.2 kJ/mol is calculated. A [minus]3.8 kJ/mol value has been found for the adsorption enthalpy of methanol on the ion-exchange resin Lewatit K2631 by a combination of reaction calorimetry and thermogravimetry. This allows the calculation of an activation energy on the gel phase of the resin of 91 kJ/mol.

Sola, L.; Pericas, M.A.; Cunill, F.; Iborra, M. (Univ. de Barcelona (Spain). Dept. d'Enginyeria Quimica)

1994-11-01T23:59:59.000Z

162

Disposition, metabolism, and toxicity of methyl tertiary butyl ether, an oxygenate for reformulated gasoline  

SciTech Connect (OSTI)

Studies of the toxicology of methyl tertiary butyl ether (MTBE) were reviewed as a possible information base for evaluating the health effects of evaporative emissions from reformulated gasoline (RFG). Perirenal fat/blood MTBE concentration ratios ranged from 9.7 to 11.6 after 15 wk of intermittent exposure. During an oxyfuels program in Fairbanks, AK, blood levels of occupationally exposed workers were 0.2-31.5 {mu}g/L MTBE and 1.6 to 72.2 {mu}g/L TBA with a mean TBA:MTBE blood concentration ratio of 4.2. In patients who received MTBE by percutaneous, transhepatic puncture for the dissolution of cholesterol gallstones, concentrations of MTBE in fat tissue reached 60 and 300 {mu}g/g at a treatment time when mean blood MTBE was less than 20 {mu}g/ml. The results of laboratory and clinical studies indicate that metabolites of MTBE may contribute to the nephropathy, neoplasms, and other pathological changes associated with repeated exposure to MTBE in experimental animals. It is concluded that such studies can provide a well-defined database for quantitatitive safety comparisons and health risk-benefit analyses of MTBE and other oxygenates in RFG. 39 refs., 1 tab.

Hutcheon, D.E.; Hove, W. ten; Boyle, J. III [UMDNJ, New Jersey Medical Schook, Newark, NJ (United States)] [UMDNJ, New Jersey Medical Schook, Newark, NJ (United States); Arnold, J.D. [Arnold & Arnold, Inc., Kansas City, MO (United States)] [Arnold & Arnold, Inc., Kansas City, MO (United States)

1996-04-05T23:59:59.000Z

163

Scanning tunneling microscopy of dimeric and polymeric products of electroreduced (Re(CO) sub 3 (4-vinyl,4 prime -methyl-2,2 prime -bipyridine)Cl)  

SciTech Connect (OSTI)

Scanning tunneling microscopy (STM) was used to image adsorbed products resulting from electroreduction of (Re(CO){sub 3}(vbpy)Cl) (vbpy = 4-vinyl,4{prime}-methyl-2,2{prime}-bipyridine) on highly oriented pyrolytic graphite (HOPG). STM images, in air, of HOPG electrodes following electroreduction of (Re(CO){sub 3}(vbpy)Cl) (in acetonitrile/0.1 M tetra-n-butylammonium perchlorate) by cycling the potential between 0 and {minus}2.0 V vs a sodium saturated colomel electrode (SSCE) show molecular species uniformly distributed on the surface including approximately dumbbell shaped molecules ({approx} 40 {times} 20 {angstrom}). The size and shape of these aggregates is consistent with products derived from vinyl-vinvyl coupling of Re-Re bonded dimers: ((vbpy)(CO){sub 3}Re-Re(CO){sub 3}(vbpyH-vbpyH)(CO){sub 3}Re-Re(CO){sub 3}(vbpy)). STM images of electrodes prepared by cycling the potential between 0 and {minus}1.45 V vs SSCE (less reducing conditions) show highly nonuniform coating of the surface by polymer. Several polymer morphologies were observed with polymer nucleation preferentially occurring at step sites on HOPG.

Snyder, S.R.; White, H.S. (Univ. of Minnesota, Minneapolis (USA)); Lopez, S.; Abruna, H.D. (Cornell Univ., Ithaca, NY (USA))

1990-02-14T23:59:59.000Z

164

Radiation crosslinking of poly(vinyl chloride) with trimethylolpropanetrimethacrylate. IV. Effect of diundecyl phthalate: dependence of physical properties on composition. [Electron beam ion sources  

SciTech Connect (OSTI)

Blends of poly(vinyl chloride)(PVC) with polyfunctional monomers may be crosslinked by ionizing radiation. The physical properties of PVC blended with trimethylolpropanetrimethacrylate (TMPTMA) and diundecyl phthalate (DUP) were studied. The TMPTMA monomer crosslinked the blend by homopolymerization and/or grafting to PVC. The plasticizer, DUP, was chemically inert under irradiation but, by plasticizing the macromolecules and diluting the monomer, changed the kinetics extensively. Characteristics of the glass transitions and the tensile mechanical properties have been correlated with blend composition and radiation dose. Before irradiation, poly(vinyl chloride) was plasticized by both DUP and TMPTMA monomer. The increase in glass transition temperature and mechanical strength following irradiation to 5 Mrad was correlated with the TMPTMA content of the blend. Both the molecular structure of the network and the DUP content of the blend were factors in determining the physical properties of the final crosslinked blend. The molecular structure was determined by the kinetics of the crosslinking reactions, which in turn were determined by the blend composition. A molecular interpretation consistent with the physical properties, chemical kinetics, and mechanism of the crosslinking system has been presented. 24 figures, 2 tables.

Bowmer, T.N.; Vroom, W.I.

1983-11-01T23:59:59.000Z

165

Mechanistic Investigation of Acid-Catalyzed Cleavage of Aryl-Ether Linkages: Implications for Lignin Depolymerization  

SciTech Connect (OSTI)

Carbon-oxygen bonds are the primary inter-monomer linkages lignin polymers in plant cell walls, and as such, catalyst development to cleave these linkages is of paramount importance to deconstruct biomass to its constituent monomers for the production of renewable fuels and chemicals. For many decades, acid catalysis has been used to depolymerize lignin. Lignin is a primary component of plant cell walls, which is connected primarily by aryl-ether linkages, and the mechanism of its deconstruction by acid is not well understood, likely due to its heterogeneous and complex nature compared to cellulose. For effective biomass conversion strategies, utilization of lignin is of significant relevance and as such understanding the mechanisms of catalytic lignin deconstruction to constituent monomers and oligomers is of keen interest. Here, we present a comprehensive experimental and theoretical study of the acid catalysis of a range of dimeric species exhibiting the b-O-4 linkage, the most common inter-monomer linkage in lignin. We demonstrate that the presence of a phenolic species dramatically increases the rate of cleavage in acid at 150 degrees C. Quantum mechanical calculations on dimers with the para-hydroxyl group demonstrate that this acid-catalyzed pathway differs from the nonphenolic dimmers. Importantly, this result implies that depolymerization of native lignin in the plant cell wall will proceed via an unzipping mechanism wherein b-O-4 linkages will be cleaved from the ends of the branched, polymer chains inwards toward the center of the polymer. To test this hypothesis further, we synthesized a homopolymer of b-O-4 with a phenolic hydroxyl group, and demonstrate that it is cleaved in acid from the end containing the phenolic hydroxyl group. This result suggests that genetic modifications to lignin biosynthesis pathways in plants that will enable lower severity processes to fractionate lignin for upgrading and for easier access to the carbohydrate fraction of the plant cell wall.

Sturgeon, M. R.; Kim, S.; Chmely, S. C.; Foust, T. D.; Beckham, G. T.

2013-01-01T23:59:59.000Z

166

LIDEM unit for the production of methyl tert-butyl ether from butanes  

SciTech Connect (OSTI)

One of the basic problems in the production of motor fuels is how to obtain high-octane unleaded gasolines that will meet today`s ecological requirements. The term {open_quotes}reformulated gasolines{close_quotes} has come into general use throughout the world to denote fuels with a certain chemical composition. These gasolines consist of preselected components; as shown by worldwide experience, they must include oxygen-containing compounds that are distinguished by high octane numbers and low reactivities. Standards in effect in the United States, Japan, and certain Western European countries require that automotive gasolines must contain at least 2-4% by weight of oxygen-containing compounds (calculated as oxygen). In the last 15 years, in order to meet these requirements, production has been set up in various countries for the manufacture of high-octane oxygen-containing components known as oxygenates. The most common of these is methyl tert-butyl ether (MTBE), obtained by etherification of isobutene by methanol. Process technology developed by this last organization was used as the basis for constructing a unit in the Nizhnekamskneftekhim Production Association and at the Mazheikyai Petroleum Refinery in Lithuania. MTBE production has been held back mainly by a shortage of isobutene, which is obtained mainly from butane-butene cuts produced in cat crackers. In order to alleviate this shortage, it has been proposed that MTBE should be obtained from saturated C{sub 4} hydrocarbons that are recovered in processing oilfield associated gas, and also in the refinery from primary distillation units, catalytic reformers, and hydrocrackers. A working design was developed in 1991-1992 by Lengiproneftekhim for a basically new combination unit designed for the processing of saturated C{sub 4} hydrocarbons, which has been termed the LIDEM unit (Leningrad - isomerization - dehydrogenation - MTBE).

Rudin, M.G.; Zadvornov, M.A.

1994-09-01T23:59:59.000Z

167

Biodegradation of methyl tert-butyl ether by a bacterial pure culture  

SciTech Connect (OSTI)

A bacterial strain, PM1, which is able to utilize methyl tert-butyl ether (MTBE) as its sole carbon and energy source, was isolated from a mixed microbial consortium in a compost biofilter capable of degrading MTBE. Initial linear rates of MTBE degradation by 2 x 10{sup 6} cells ml{sup {minus}1} were 0.07, 1.17, and 3.56 {mu}g ml{sup {minus}1} h{sup {minus}1} for initial concentrations of 5, 50, and 500 {mu}g MTBE ml{sup {minus}1}, respectively. When incubated with 20 {mu}g of uniformly labeled [{sup 14}C]MTBE ml{sup {minus}1}, strain PM1 converted 46% to {sup 14}CO{sub 2} and 19% to {sup 14}C-labeled cells within 120 h. This yield is consistent with the measurement of protein accumulation at different MTBE concentrations from which was estimated a biomass yield of 0.18 of cells mg MTBE{sup {minus}1}. Strain PM1 was inoculated into sediment core material collected from a contaminated groundwater plume at Port Hueneme, California, in which there was no evidence of MTBE degradation. Strain PM1 readily degraded 20 {micro}g of MTBE ml{sup {minus}1} added to the core material. The rate of MTBE removal increased with additional inputs of 20 {micro}g of MTBE ml{sup {minus}1}. These results suggest that PM1 has potential for use in the remediation of MTBE-contaminated environments.

Hanson, J.R.; Ackerman, C.E.; Scow, K.M.

1999-11-01T23:59:59.000Z

168

The lightness of being: mass, ether, and unification of the forces  

SciTech Connect (OSTI)

How can an electron be both a wave and a particle? At the same time? Because it is a quantum field. That key insight seems to be underappreciated, given the awe and mysticism that permeate most nontechnical discussions of modern physics. Perhaps the root of the problem is that most popularizations of quantum mechanics and of particle physics shy away from quantized fields, the natural language for microscopic phenomena. In 'The Lightness of Being: Mass, Ether, and the Unification of Forces', Frank Wilczek confronts quantum field theory head on, demystifying not only wave-particle duality but also the origin of mass for hadrons (that is, everyday matter). Wilczek is the Herman Feshbach Professor of Physics at MIT and a co-recipient of the 2004 Nobel Prize in Physics. His research has spanned almost all aspects of theoretical particle physics, with significant forays into condensed-matter physics and dense nuclear matter (condensed quark matter, one might say). Recurring themes are the richness of quantum chromodynamics (QCD) and the alluring ideas of unification. His breadth and depth make him a sought after speaker for colloquia and public lectures. Wilczek also contributes an occasional Reference Frame column to 'Physics Today'. The material in 'The Lightness of Being' reflects the scope of the author's research. The book consists of three parts: the quantum fields of QCD (the ether that makes mass), gravitation (the ether that feels mass), and unification. Part 1, which traces notions of mass from Isaac Newton's time through theoretical and computational results of the past 40 years, is the most substantial and original; it is rich, modern, and rooted in observed phenomena. Part 2 continues in the same vein as it connects gravity, also an observed phenomenon, to QCD. Part 3 is more conventional, for a popularization of particle physics, in its focus on speculative ideas that (still) await direct experimental tests. Readers of 'Physics Today' will know that Wilczek can write with wit, grace, and an uncanny facility for using lightweight language to express heavy-duty ideas. They will find much of that kind of writing in 'The Lightness of Being'. Wilczek addresses subtle ideas with vim and vigor. He avoids some of the jargon of quantum field theory; for example, he calls the vertex in a Feynman diagram a hub. In more ambitious terminology, he refers to space-filling, everfluctuating quantum fields--be they electrons, quarks, gluons, or gravity--as 'the Grid'. The term is supposed to be short and familiar, evoking the ubiquitous electric grid (and soon-to-beubiquitous computing grid). It also, for the expert, cleverly alludes to lattice gauge theory. Indeed, after vividly explaining how the dynamics of QCD and the constraints of Heisenberg uncertainty conspire to create mass from the Grid, Wilczek emphasizes that the picture is backed by lattice QCD computations of 'heroic' proportions. Unfortunately, too much of 'The Lightness' is laden with clunky affectation: silly names (a pulsed electron accelerator is called the 'ultrastroboscopic nanomicroscope'), sophomoric jokes ('hadron' is 'not a typo'), references to pop culture (Wilczek might have called quantum fields 'the Matrix, but the sequels tarnished that candidate'), and many pointless footnotes. In a public lecture the audience may guffaw at such jokes, but on the printed page they fall flat. Wilczek explains physics so well that the inappropriate humor is the biggest unexplained puzzle of the book. It is fine to be silly, even crude, as long as the reader's path to understanding is made easier. A joke can inform with an unexpected perspective or simply give the mind a pause to refresh. Some of the humor achieves such aims, but too many gags impede the pace of the otherwise fine exposition. Three appendices, a glossary, and a set of endnotes are crisp and sober. They are excellent. 'The Lightness of Being' is not unbearable, but it is weighed down with too much clutter to rank as a masterpiece. It's a pity: Wilczek's best writing--some of it in this book--is l

Kronfeld, Andreas S.

2009-03-01T23:59:59.000Z

169

Northern Tool + Equipment Find the Right Fitting for Your Pressure Washer at Northern Tool! NorthernTool.com/PressureWashers Pristine Pressure Pressure/power washing in Maryland Vinyl siding cleaned, decks cleaned www.pristinepressure.com  

E-Print Network [OSTI]

ability to clean while saving on our most important resources, water and energy." In recognition! NorthernTool.com/PressureWashers Pristine Pressure Pressure/power washing in Maryland Vinyl siding cleaned, decks cleaned www.pristinepressure.com Siding Cleaning Bring back the life to your siding! Estimates

Sóbester, András

170

European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3.115 NON-LINEAR MECHANICAL PROPERTIES OF ETHYLENE-VINYL ACETATE (EVA) AND ITS  

E-Print Network [OSTI]

25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3,2 1 Institute for Solar Energy Research Hamelin (ISFH), Am Ohrberg 1, D-31860 Emmerthal, Germany 2 ABSTRACT: Polymers such as ethylene-vinyl acetate (EVA) encapsulants are known for their non

171

JOURNAL OF MATERIALS SCIENCE 2012, IN PRESS DOI: 10.1007/S10853-012-6927-8 Viscoelastic properties of hollow glass particle filled vinyl ester matrix syntactic foams: effect of temperature and loading  

E-Print Network [OSTI]

properties of hollow glass particle filled vinyl ester matrix syntactic foams: effect of temperature compositions of syntactic foams. Storage modulus, loss modulus, and glass transition temperature (Tg@poly.edu Abstract Viscoelastic properties of hollow particle reinforced composites called syntactic foams

Gupta, Nikhil

172

SYNTHESIS OF NOVEL CROWN ETHERS BEARING THE exo-cis-2,3-NORBORNYL GROUP AS POTENTIAL Na+ AND K+ EXTRACTANTS  

SciTech Connect (OSTI)

The synthesis of a series of novel dinorbornyl-16-crown-5 and dinorbornyl-18-crown-6 ethers that incorporate the exo-cis-2,3-norbornyl moiety within the macrocycle framework is described. The key starting material for the crown ethers, exo-cis-2,3-norbornanediol, was successfully prepared on a large (>30g) scale in 88% yield from norbornylene by osmium tetroxide-catalyzed hydroxylation. The syn and anti isomers of the dinorbornyl-16-crown-5 ether family were prepared using diethylene glycol with ring closure achieved using a methallyl linkage. The isomers cis-syn-cis and cis-anti-cis di-norbornano-15-methyleno-16-crown-5 (6A and 6B) could be separated using column chromatography, and a single crystal of the syn isomer 6A suitable for X-ray crystal structure analysis was obtained, thereby confi rming the syn orientation. The syn and anti isomers of the dinorbornyl-18-crown-6 ether family were successfully prepared employing a different synthetic strategy, involving the potassiumtemplated cyclization of two bis-hydroxyethoxy-substituted exo-cis-2,3-norbornyl groups under high dilution conditions. Attempts to fully separate cis-syn-cis di-norbornano-18-crown-6 (10A) and cis-anti-cis di-norbornano-18-crown-6 (10B) from one another using column chromatography were unsuccessful. All intermediates and products were checked for purity using either thin layer chromatography or gas chromatography, and characterized by proton and carbon NMR. Crown ethers 6AB and 10AB are to our knowledge the fi rst crown ethers to incorporate the exo-cis-2,3-norbornyl moiety into the crown ring to be successfully synthesized and characterized.

Robeson, R.M.; Bonnesen, P.

2007-01-01T23:59:59.000Z

173

Synthesis and characterization of redox copolymers of (Ru(4-vinyl-4 prime -methyl-2,2 prime -bipyridine) sub 3 ) sup 2+ and (Os(4-vinyl-4 prime -methyl-2,2 prime -bipyridine) sub 3 ) sup 2+ : Unusual energy-transfer dynamics  

SciTech Connect (OSTI)

Copolymers of (Ru(vbpy){sub 3}(PF{sub 6}){sub 2}) and (Os(vbpy){sub 3}(PF{sub 6}){sub 2}) (vbpy = 4-vinyl-4{prime}-methyl-2,2{prime}-bipyridine) have been prepared in solution and by electropolymerization. The ruthenium and osmium monomers were incorporated in the copolymers in different ratios depending on the polymerization method. These results point to fundamental differences between solution polymerization and electropolymerization. In addition, luminescence experiments at liquid-nitrogen temperature and room temperature point to a significant degree of energy transfer from ruthenium to osmium states in the polymer.

Bommarito, S.L.; Lowery-Bretz, S.P.; Abruna, H.D. (Cornell Univ., Ithaca, NY (United States))

1992-02-05T23:59:59.000Z

174

The germination and development of seedlings from seeds treated with growth regulators: (2-chloroethyl) trimethylammonium chloride, succinic acid 2,2 dimethylhydrazide and 2,3-dihydro-5-6-diphenyl-1,4 oxathiin  

E-Print Network [OSTI]

. (May 1976) Marihelen Kamp, B. S. Texas Tech University Chairman of Advisory Committee: Dr. Arthur F. . Nightingale 0 th d ' h d d 'gl t. y 1 f I ~1 c. v. cactus flowered were soaked in each of three different growth retarding chemicals SADH... E NIE N T The author of this thesis extends most sincere thanks to Dr. Arthur E. Nightingale for his assistance in the preparation of this thesis and for his invaluable guidance in her graduate studies. Special appreciation is given also to Dr...

Kamp, Marihelen

1976-01-01T23:59:59.000Z

175

The radiation crosslinking of poly(vinyl chloride) with trimethylolpropanetrimethacrylate. III. Effect of diundecyl phthalate: chemical kinetics of a three-component system  

SciTech Connect (OSTI)

The radiation chemistry of poly(vinyl chloride) (PVC) blended with trimethylolpropanetrimethacrylate (TMPTMA) and diundecyl phthalate (DUP) has been examined. This three-component mixture contains a base resin (PVC), a crosslinking sensitizer (TMPTMA), and a physical modifier (DUP). These are the basic components in any radiation-curable coating. The kinetics and mechanism of the crosslinking reactions were studied with reference to the dependence on radiation dose and blend composition. The polyfunctional TMPTMA underwent polymerization incorporating the PVC into a 3-dimensional network. DUP remained chemically inert during the irradiation, not being bound to the network. However, DUP by plasticizing the macromolecules and diluting the monomer, changed the kinetics extensively. DUP enhanced TMPTMA homopolymerization, TMPTMA grafting, and PVC crosslinking reaction rates. The effect of the competition between polymerization, grafting, and degradation reactions was examined in terms of enhanced mobility of the reacting species. The influence of these kinetics considerations in selecting a blend composition for a coating application was discussed.

Bowmer, T.N.; Vroom, W.I.; Hellman, M.Y.

1983-08-01T23:59:59.000Z

176

Synthesis of octane enhancers during slurry-phase Fischer-Tropsch. [801Methyl tert-butyl ether  

SciTech Connect (OSTI)

The objective of this project is to investigate three possible routes to the formation of ethers, in particular methyl tert-butyl ether (MTBE), during slurry phase Fischer-Tropsch reaction. The three reaction schemes to be investigated are: (1) Addition of isobutylene during the formation of methanol and/or higher alcohols directly from CO and H{sub 2} during slurry-phase Fischer-Tropsch. (2) Addition of isobutylene to FT liquid products including alcohols in a slurry-phase reactor containing an MTBE or other acid catalyst. (3) Addition of methanol to slurry phase FT synthesis making iso-olefins. During the sixth quarter we completed the construction of the slurry bubble column reactor (SBCR), conducted initial shake-down experiments in a cold-flow mode, and finalized the selection process of the acid catalysts for conversion of syngas-produced alcohols and isobutylene to MTBE (scheme 2). Tasks 3, 4, and 5 are awaiting complete implementation of the SBCR system.

Marcelin, G.

1992-06-24T23:59:59.000Z

177

Highly Enantioselective Syntheses of Functionalized r-Methylene--butyrolactones via Rh(I)-catalyzed Intramolecular Alder Ene  

E-Print Network [OSTI]

the utility of our methodology, we introduced various functional groups at the allylic position (Table 3). If R2 is an acetyl group, the desired product is a vinyl acetate-substituted -lactone. If R2 is an alkyl group, a vinyl ether is the corresponding product. Due to the wide applications of vinyl acetates

Zhang, Xumu

178

(2/94)(2-4,9/95)(7/97)(11,12/98)(1,9,11/99) Neuman Chapter 3 Haloalkanes, Alcohols, Ethers, and Amines  

E-Print Network [OSTI]

, Ethers, and Amines from Organic Chemistry by Robert C. Neuman, Jr. Professor of Chemistry, emeritus://web.chem.ucsb.edu/~neuman/orgchembyneuman/> Chapter Outline of the Book ************************************************************************************** I. Foundations 1. Organic Molecules and Chemical Bonding 2. Alkanes and Cycloalkanes 3. Haloalkanes

Reed, Christopher A.

179

Methyl tert-butyl ether (MTBE) is a volatile organic com-pound (VOC) derived from natural gas that is added to gas-  

E-Print Network [OSTI]

Methyl tert-butyl ether (MTBE) is a volatile organic com- pound (VOC) derived from natural gas Water in Urban and Agricultural Areas made from methanol, which is derived primarily from natural gas that is added to gas- oline either seasonally or year round in many parts of the United States to increase

180

Single-Step Syngas-to-Distillates (S2D) Synthesis via Methanol and Dimethyl Ether Intermediates: Final Report  

SciTech Connect (OSTI)

The objective of the work was to enhance price-competitive, synthesis gas (syngas)-based production of transportation fuels that are directly compatible with the existing vehicle fleet (i.e., vehicles fueled by gasoline, diesel, jet fuel, etc.). To accomplish this, modifications to the traditional methanol-to-gasoline (MTG) process were investigated. In this study, we investigated direct conversion of syngas to distillates using methanol and dimethyl ether intermediates. For this application, a Pd/ZnO/Al2O3 (PdZnAl) catalyst previously developed for methanol steam reforming was evaluated. The PdZnAl catalyst was shown to be far superior to a conventional copper-based methanol catalyst when operated at relatively high temperatures (i.e., >300C), which is necessary for MTG-type applications. Catalytic performance was evaluated through parametric studies. Process conditions such as temperature, pressure, gas-hour-space velocity, and syngas feed ratio (i.e., hydrogen:carbon monoxide) were investigated. PdZnAl catalyst formulation also was optimized to maximize conversion and selectivity to methanol and dimethyl ether while suppressing methane formation. Thus, a PdZn/Al2O3 catalyst optimized for methanol and dimethyl ether formation was developed through combined catalytic material and process parameter exploration. However, even after compositional optimization, a significant amount of undesirable carbon dioxide was produced (formed via the water-gas-shift reaction), and some degree of methane formation could not be completely avoided. Pd/ZnO/Al2O3 used in combination with ZSM-5 was investigated for direct syngas-to-distillates conversion. High conversion was achieved as thermodynamic constraints are alleviated when methanol and dimethyl are intermediates for hydrocarbon formation. When methanol and/or dimethyl ether are products formed separately, equilibrium restrictions occur. Thermodynamic relaxation also enables the use of lower operating pressures than what would be allowed for methanol synthesis alone. Aromatic-rich hydrocarbon liquid (C5+), containing a significant amount of methylated benzenes, was produced under these conditions. However, selectivity control to liquid hydrocarbons was difficult to achieve. Carbon dioxide and methane formation was problematic. Furthermore, saturation of the olefinic intermediates formed in the zeolite, and necessary for gasoline production, occurred over PdZnAl. Thus, yield to desirable hydrocarbon liquid product was limited. Evaluation of other oxygenate-producing catalysts could possibly lead to future advances. Potential exists with discovery of other types of catalysts that suppress carbon dioxide and light hydrocarbon formation. Comparative techno-economics for a single-step syngas-to-distillates process and a more conventional MTG-type process were investigated. Results suggest operating and capital cost savings could only modestly be achieved, given future improvements to catalyst performance. Sensitivity analysis indicated that increased single-pass yield to hydrocarbon liquid is a primary need for this process to achieve cost competiveness.

Dagle, Robert A.; Lebarbier, Vanessa MC; Lizarazo Adarme, Jair A.; King, David L.; Zhu, Yunhua; Gray, Michel J.; Jones, Susanne B.; Biddy, Mary J.; Hallen, Richard T.; Wang, Yong; White, James F.; Holladay, Johnathan E.; Palo, Daniel R.

2013-11-26T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


181

A pulsed field gradient and NMR imaging investigations of the water retention mechanism by cellulose ethers in mortars  

SciTech Connect (OSTI)

The study presented in this paper is devoted to improve the knowledge on the influence of cellulose ethers (CE) on the freshly-mixed mortars water retention. Indeed, this crucial property is the most important imparted by these polysaccharides. One of the assumptions proposed to explain this phenomenon is that CE acts as diffusion barrier to the water. To test this hypothesis, the CE effect on the self-diffusion coefficient of water in solution and on the water mobility between two fresh cement pastes was studied by Nuclear Magnetic Resonance. CE does not significantly modify the water self-diffusion coefficient in CE solution or in admixed cement pastes. Moreover the interdiffusion imaging experiments demonstrated that the water diffusion at the paste/paste interface is not affected by the presence of cellulosic admixture.

Patural, Laetitia, E-mail: patural@emse.f [Ecole Nationale Superieure des Mines de Saint-Etienne, Centre SPIN, LPMG UMR 5148, 158 cours Fauriel, F-42023 Saint-Etienne Cedex 2 (France); Porion, Patrice [Centre de la Recherche sur la Matiere Divisee, CNRS-Universite d'Orleans, UMR 6619, 1b rue de la Ferollerie, F-45071 Orleans Cedex 2 (France); Van Damme, Henri [Laboratoire de Physico-chimie des Polymeres et Milieux Disperses, ESPCI ParisTech, 10 rue Vauquelin, F-75231 Paris Cedex 05 and Universite Paris Est - LCPC, 58 boulevard Lefebvre, 75732 Paris cedex 15 (France); Govin, Alexandre; Grosseau, Philippe [Ecole Nationale Superieure des Mines de Saint-Etienne, Centre SPIN, LPMG UMR 5148, 158 cours Fauriel, F-42023 Saint-Etienne Cedex 2 (France); Ruot, Bertrand; Deves, Olivier [Universite Paris-Est, Centre Scientifique et Technique du Batiment, Departement Enveloppe et Revetements/Division Enduits, Mortiers et Colles, 84 avenue Jean Jaures, F-77447 Marne-la-Vallee Cedex 2 (France)

2010-09-15T23:59:59.000Z

182

Kinetics and modeling of mixture effects during complete catalytic oxidation of benzene and methyl tert-butyl ether  

SciTech Connect (OSTI)

The performance of a catalytic incinerator depends on the nature of the compounds being oxidized and cannot be predicted simply by knowing the performance of the incinerator with pure-component model compounds. Considering the importance of mixture effects, an attempt was made to develop a combined model to predict the conversion when benzene and methyl tert-butyl ether (MTBE) are simultaneously oxidized. Complete catalytic oxidation of benzene and MTBE, singly and in mixtures, was investigated over a platinum catalyst. No inhibition effects were seen with benzene, but MTBE conversion was distinctly inhibited by benzene. A Mars-van Krevelen rate model was used to explain the results. Model parameters were obtained from pure-component experiments and then incorporated into a multicomponent model without any adjustment or additional rate parameters. The multicomponent model was able to predict the conversion of benzene and MTBE oxidation in the binary mixture using the pure-component data without adjustable parameters.

Dangi, S.; Abraham, M.A. [Univ. of Tulsa, OK (United States). Dept. of Chemical Engineering] [Univ. of Tulsa, OK (United States). Dept. of Chemical Engineering

1997-06-01T23:59:59.000Z

183

Comparative Environmental Performance of Two-Diesel-Fuel Oxygenates: Dibutyl Maleate (DBM) and Triproplyene Glycol Monomethyl Ether (TGME)  

SciTech Connect (OSTI)

Many studies have shown that the addition of oxygen bearing compounds to diesel fuel can significantly reduce particulate emissions. To assist in the evaluation of the environmental performance of diesel-fuel oxygenates, we have implemented a suite of diagnostic models for simulating the transport of compounds released to air, water, and soils/groundwater as well as regional landscapes. As a means of studying the comparative performance of DBM and TGME, we conducted a series of simulations for selected environmental media. Benzene and methyl tertiary butyl ether (MTBE) were also addressed because they represent benchmark fuel-related compounds that have been the subject of extensive environmental measurements and modeling. The simulations showed that DBM and TGME are less mobile in soil because of reduced vapor-phase transport and increased retention on soil particles. The key distinction between these two oxygenates is that DBM is predicted to have a greater potential than TGME for aerobic biodegradation, based on chemical structure.

Layton, D.W.; Marchetti, A.A.

2001-10-01T23:59:59.000Z

184

Process for the polymerization of vinyl chloride in aqueous suspension utilizing an oil-soluble initiator and subsequently a water-soluble initiator and use of the powders obtained thereby  

SciTech Connect (OSTI)

Process for the polymerization of vinyl chloride in aqueous suspension in the presence of a dispersing system comprising a cellulosic derivative and an anionic emulsifying agent wherein the polymerizaton is initiated by an oil-soluble initiator and a water-soluble free radical polymerization initiator is added in the course of polymerization. The thus obtained polyvinyl chloride powders are particularly suitable for the production of battery separators.

Petit, A.

1981-01-06T23:59:59.000Z

185

Enol Ethers as Substrates for Efficient Z- and Enantioselective Ring-Opening/Cross-Metathesis Reactions Promoted by Stereogenic-at-Mo Complexes: Utility in Chemical Synthesis and Mechanistic Attributes  

E-Print Network [OSTI]

The first examples of catalytic enantioselective ring-opening/cross-metathesis (EROCM) reactions that involve enol ethers are reported. Specifically, we demonstrate that catalytic EROCM of several oxa- and azabicycles, ...

Yu, Miao

186

Solvent Effects on Metal Complexation with Crown Ethers from Liquid to Supercritical Fluids (DE-FG07-98ER 149 13)  

SciTech Connect (OSTI)

The purpose of this project is to study the salvation effects of metal-crown ether complexation in different solvents. It has been suggested in the literature that supercritical fluid carbon dioxide (SF-CO2) is a tunable solvent because its salvation environment can be varied with the fluid density. In this project, spectroscopic techniques including nuclear magnetic resonance (NMR) and Fourier Transform Infrared (FTIR) were used to evaluate salvation effects of metal crown complexation in organic solvents and in SF-CO2. In most solvent extraction systems, water is often involved in the extraction processes. We have carried out extensive studies of water-crown ether interactions in different solvents and in SF-CO2 using NMR and FTIR techniques. Water molecules can be attached to crown ethers through hydrogen bonding of H-0-H to the oxygen atoms of crown ether cavities. This type of interaction is like a Lewis acid-Lewis base complexation. During the course of this project, we noticed that some CO2 soluble Lewis base such as tri-n-butyl-phosphate (TBP) can also form such Lewis acid-Lewis base complexes with water and other inorganic acids including nitric acid and hydrochloric acid. Inorganic acids (e.g. nitric acid) are normally not soluble in SF-CO2. However, because TBP is highly soluble in SF-CO2, an inorganic acid bound to TBP via hydrogen bonding becomes CO2 soluble. This Lewis acid-Lewis base complex approach provides a method of introducing inorganic acids into supercritical fluid CO2 for chemical reactions.

Wai, C.M.

2002-06-01T23:59:59.000Z

187

Toxicity of polychlorinated diphenyl ethers in hydra attenuata and in rat whole-embryo culture. Master's thesis  

SciTech Connect (OSTI)

Polychlorinated diphenyl ethers (PCDEs) are a class of biaryl compounds that have little commercial application, but appear to be widespread in the environment. They have been found in wood preservative waste dumpsites and in fly ash from municipal waste incinerators. They have been detected in bird eggs and tissues, fish, and other edible marine organisms in the United States, Canada, and Europe. There are limited reports in the extant literature on the toxicity of PCDEs. This study was designed to evaluate the toxicity of selected PCDEs in cultures of Hydra attenuata and post-implantation rat whole embryos. The toxicity of several closely related polychlorinated biphenyls (PCBs) was evaluated in both cultures and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) was evaluated in whole embryo culture. Embryonic growth and development parameters (yolk sac diameter, crown-rump length, somite count, and DNA and protein content) and gross morphology were determined. Findings indicated that these chemicals were neither embryotoxic nor teratogenic. Thus, the PCDEs, which elicit other diverse toxic and biochemical responses in rodents, are relatively inactive in these bioassays for developmental toxicity.

Becker, M.C.

1991-05-01T23:59:59.000Z

188

Monodisperse porous polymer particles containing macrocyclic ether as a new class of sorbent for SR(II) separation  

SciTech Connect (OSTI)

Strontium{sup 90} is one of the typical fission products that may be found in high level liquid waste (HLLW). Separation of Sr{sup 90} prior to the vitrification is beneficial to the final treatment of solid radioactive waste. In this study, a new class of sorbent for Sr(II) was developed by loading the macrocyclic ether DtBuCH18C6 into the monodisperse porous polymer particles (MPPPs). The MPPPs are well-known as a promising chromatographic material due to the uniform particle size, porous morphology, good compatibility with organic extractants, and rigid matrix. The structure and micro-morphology of the sorbent particles were characterized. The adsorption behavior towards Sr(II) in HNO{sub 3} media was investigated by both batch and column experiments. High adsorption efficiency and selective separation of Sr(II) was obtained. The sorbent particles can be recycled for at least several times before obvious lose of the adsorption ability. This kind of sorbent possesses the potential to be used for strontium separation in radioactive liquid waste.

Leng, Yuxiao; Bai, Feifei [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Faculty of Chemical Science and Engineering, China University of Petroleum, Beijing 100084 (China); Ye, Gang; Wei, Jichao; Wang, Jianchen; Chen, Jing [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China)

2013-07-01T23:59:59.000Z

189

Investigation of HCCI Combustion of Diethyl Ether and Ethanol Mixtures Using Carbon 14 Tracing and Numerical Simulations  

SciTech Connect (OSTI)

Despite the rapid combustion typically experienced in Homogeneous Charge Compression Ignition (HCCI), components in fuel mixtures do not ignite in unison or burn equally. In our experiments and modeling of blends of diethyl ether (DEE) and ethanol (EtOH), the DEE led combustion and proceeded further toward completion, as indicated by {sup 14}C isotope tracing. A numerical model of HCCI combustion of DEE and EtOH mixtures supports the isotopic findings. Although both approaches lacked information on incompletely combusted intermediates plentiful in HCCI emissions, the numerical model and {sup 14}C tracing data agreed within the limitations of the single zone model. Despite the fact that DEE is more reactive than EtOH in HCCI engines, they are sufficiently similar that we did not observe a large elongation of energy release or significant reduction in inlet temperature required for light-off, both desired effects for the combustion event. This finding suggests that, in general, HCCI combustion of fuel blends may have preferential combustion of some of the blend components.

Mack, J H; Dibble, R W; Buchholz, B A; Flowers, D L

2004-01-16T23:59:59.000Z

190

Calcitriol inhibits Ether-a go-go potassium channel expression and cell proliferation in human breast cancer cells  

SciTech Connect (OSTI)

Antiproliferative actions of calcitriol have been shown to occur in many cell types; however, little is known regarding the molecular basis of this process in breast carcinoma. Ether-a-go-go (Eag1) potassium channels promote oncogenesis and are implicated in breast cancer cell proliferation. Since calcitriol displays antineoplastic effects while Eag1 promotes tumorigenesis, and both factors antagonically regulate cell cycle progression, we investigated a possible regulatory effect of calcitriol upon Eag1 as a mean to uncover new molecular events involved in the antiproliferative activity of this hormone in human breast tumor-derived cells. RT real-time PCR and immunocytochemistry showed that calcitriol suppressed Eag1 expression by a vitamin D receptor (VDR)-dependent mechanism. This effect was accompanied by inhibition of cell proliferation, which was potentiated by astemizole, a nonspecific Eag1 inhibitor. Immunohistochemistry and Western blot demonstrated that Eag1 and VDR abundance was higher in invasive-ductal carcinoma than in fibroadenoma, and immunoreactivity of both proteins was located in ductal epithelial cells. Our results provide evidence of a novel mechanism involved in the antiproliferative effects of calcitriol and highlight VDR as a cancer therapeutic target for breast cancer treatment and prevention.

Garcia-Becerra, Rocio [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico); Diaz, Lorenza, E-mail: lorenzadiaz@gmail.com [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico); Camacho, Javier [Department of Pharmacology, Centro de Investigacion y de Estudios Avanzados, Instituto Politecnico Nacional, Av. Instituto Politecnico Nacional 2508, San Pedro Zacatenco 07360, Mexico, D.F. (Mexico)] [Department of Pharmacology, Centro de Investigacion y de Estudios Avanzados, Instituto Politecnico Nacional, Av. Instituto Politecnico Nacional 2508, San Pedro Zacatenco 07360, Mexico, D.F. (Mexico); Barrera, David; Ordaz-Rosado, David; Morales, Angelica [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico); Ortiz, Cindy Sharon [Department of Pathology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Pathology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico); Avila, Euclides [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico); Bargallo, Enrique [Department of Breast Tumors, Instituto Nacional de Cancerologia, Av. San Fernando No. 22, Tlalpan 14080, Mexico, D.F. (Mexico)] [Department of Breast Tumors, Instituto Nacional de Cancerologia, Av. San Fernando No. 22, Tlalpan 14080, Mexico, D.F. (Mexico); Arrecillas, Myrna [Department of Pathology, Instituto Nacional de Cancerologia, Av. San Fernando No. 22, Tlalpan 14080, Mexico, D.F. (Mexico)] [Department of Pathology, Instituto Nacional de Cancerologia, Av. San Fernando No. 22, Tlalpan 14080, Mexico, D.F. (Mexico); Halhali, Ali; Larrea, Fernando [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)] [Department of Reproductive Biology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Vasco de Quiroga No. 15, Tlalpan 14000 Mexico, D.F. (Mexico)

2010-02-01T23:59:59.000Z

191

Alveolar breath sampling and analysis to assess exposures to methyl tertiary butyl ether (MTBE) during motor vehicle refueling  

SciTech Connect (OSTI)

In this study we present a sampling and analytical methodology that can be used to assess consumers` exposures to methyl tertiary butyl ether (MTBE) that may result from routine vehicle refueling operations. The method is based on the collection of alveolar breath samples using evacuated one-liter stainless steel canisters and analysis using a gas chromatograph-mass spectrometer equipped with a patented `valveless` cryogenic preconcentrator. To demonstrate the utility of this approach, a series of breath samples was collected from two individuals (the person pumping the fuel and a nearby observer) immediately before and for 64 min after a vehicle was refueled with premium grade gasoline. Results demonstrate low levels of MTBE in both subjects` breaths before refueling, and levels that increased by a factor of 35 to 100 after the exposure. Breath elimination models fitted to the post exposure measurements indicate that the half-life of MTBE in the first physiological compartment was between 1.3 and 2.9 min. Analysis of the resulting models suggests that breath elimination of MTBE during the 64 min monitoring period was approximately 155 {mu}g for the refueling subject while it was only 30 {mu}g for the nearby observer. This analysis also shows that the post exposure breath elimination of other gasoline constituents was consistent with previously published observations. 20 refs., 3 figs., 4 tabs.

Lindstrom, A.B.; Pleil, J.D. [U.S. Environmental Protection Agency, Research Triangle Park, NC (United States)

1996-07-01T23:59:59.000Z

192

Synergistic effect of mixing dimethyl ether with methane, ethane, propane, and ethylene fuels on polycyclic aromatic hydrocarbon and soot formation  

SciTech Connect (OSTI)

Characteristics of polycyclic aromatic hydrocarbon (PAH) and soot formation in counterflow diffusion flames of methane, ethane, propane, and ethylene fuels mixed with dimethyl ether (DME) have been investigated. Planar laser-induced incandescence and fluorescence techniques were employed to measure relative soot volume fractions and PAH concentrations, respectively. Results showed that even though DME is known to be a clean fuel in terms of soot formation, DME mixture with ethylene fuel increases PAH and soot formation significantly as compared to the pure ethylene case, while the mixture of DME with methane, ethane, and propane decreases PAH and soot formation. Numerical calculations adopting a detailed kinetics showed that DME can be decomposed to produce a relatively large number of methyl radicals in the low-temperature region where PAH forms and grows; thus the mixture of DME with ethylene increases CH{sub 3} radicals significantly in the PAH formation region. Considering that the increase in the concentration of O radicals is minimal in the PAH formation region with DME mixture, the enhancement of PAH and soot formation in the mixture flames of DME and ethylene can be explained based on the role of methyl radicals in PAH and soot formation. Methyl radicals can increase the concentration of propargyls, which could enhance incipient benzene ring formation through the propargyl recombination reaction and subsequent PAH growth. Thus, the result substantiates the importance of methyl radicals in PAH and soot formation, especially in the PAH formation region of diffusion flames. (author)

Yoon, S.S. [Corporate Research and Development Division, Hyundai-Kia Motors, Gyeonggi-do 445-706 (Korea); Anh, D.H. [Korea Electric Power Research Institute, Daejeon 305-380 (Korea); Chung, S.H. [School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742 (Korea)

2008-08-15T23:59:59.000Z

193

Whole-genorne analysis of the methyl tert-butyl ether-degrading beta-proteobacterium Methylibium petroleiphilum PM1  

SciTech Connect (OSTI)

Methylibium petroleiphilum PM1 is a methylotroph distinguished by its ability to completely metabolize the fuel oxygenate methyl tert-butyl ether (MTBE). Strain PM1 also degrades aromatic (benzene, toluene, and xylene) and straight-chain (C, to C,,) hydrocarbons present in petroleum products. Whole-genome analysis of PM1 revealed an similar to 4-Mb circular chromosome and an similar to 600-kb megaplasmid, containing 3,831 and 646 genes, respectively. Aromatic hydrocarbon and alkane degradation, metal resistance, and methylotrophy are encoded on the chromosome. The megaplasmid contains an unusual t-RNA island, numerous insertion sequences, and large repeated elements, including a 40-kb region also present on the chromosome and a 29-kb tandem repeat encoding phosphonate transport and cobalamin biosynthesis. The megaplasmid also codes for alkane degradation and was shown to play an essential role in MTBE degradation through plasmid-curing experiments. Discrepancies between the insertion sequence element distribution patterns, the distributions of best BLASTP hits among major phylogenetic groups, and the G+C contents of the chromosome (69.2%) and plasmid (66%), together with comparative genome hybridization experiments, suggest that the plasmid was recently acquired and apparently carries the genetic information responsible for PM1's ability to degrade MTBE. Comparative genomic hybridization analysis with two PM1-like MTBE-degrading environmental isolates (similar to 99% identical 16S rRNA gene sequences) showed that the plasmid was highly conserved (ca. 99% identical), whereas the chromosomes were too diverse to conduct resequencing analysis. PM1's genome sequence provides a foundation for investigating MTBE biodegradation and exploring the genetic regulation of multiple biodegradation pathways in M. petroleiphilum and other MTBE-degrading beta-proteobacteria.

Kane, Staci R. [Lawrence Livermore National Laboratory (LLNL); Chakicherla, Anu Y. [Lawrence Livermore National Laboratory (LLNL); Chain, Patrick S. G. [Lawrence Livermore National Laboratory (LLNL); Schmidt, Radomir [University of California, Davis; Shin, M [U.S. Department of Energy, Joint Genome Institute; Legler, Tina C. [Lawrence Livermore National Laboratory (LLNL); Scow, Kate M. [University of California, Davis; Larimer, Frank W [ORNL; Lucas, Susan [Joint Genome Institute, Walnut Creek, California; Richardson, P M [U.S. Department of Energy, Joint Genome Institute; Hristova, Krassimira R. [University of California, Davis

2007-03-01T23:59:59.000Z

194

Exposure to methyl tert-butyl ether, benzene, and total hydrocarbons at the Singapore-Malaysia causeway immigration checkpoint  

SciTech Connect (OSTI)

The primary aim of this study was to determine the extent and levels of exposure to volatile organic compounds (VOCs) from automobile emissions in a group of immigration officers at a busy cross-border checkpoint. A majority (80%) of the workers monitored were exposed to benzene at levels between 0.01 and 0.5 ppm, with only 1.2% exceeding the current Occupational Safety and Health Administration occupational exposure limit of 1 ppm. The geometric mean (GM) concentrations of 8-hr time-weighted average exposure were 0.03 ppm, 0.9 ppm, and 2.46 ppm for methyl-tert-butyl ether (MTBE), benzene, and total hydrocarbons (THC), respectively. The highest time-weighted average concentrations measured were 1.05 ppm for MTBE, 2.01 ppm for benzene, and 34 ppm for THC. It was found that motorbikes emitted a more significant amount of pollutants compared with motor cars. On average, officers at the motorcycle booths were exposed to four to five times higher levels of VOCs (GMs of 0.07 ppm, 0.23 ppm, and 4.7 ppm for MTBE, benzene, and THC) than their counterparts at the motor car booths (GMs of 0.01 ppm, 0.05 ppm, and 1.5 ppm). The airborne concentrations of all three pollutants correlated with the flow of vehicle traffic. Close correlations were also noted for the concentrations in ambient air for the three pollutants measured. Benzene and MTBE had a correlation coefficient of 0.97. The overall findings showed that the concentrations of various VOCs were closely related to the traffic density, suggesting that they were from a common source, such as exhaust emissions from the vehicles. The results also indicated that although benzene, MTBE, and THC are known to be volatile, a significant amount could still be detected in the ambient environment, thus contributing to our exposure to these compounds. 4 refs., 6 figs.

Tan, C.; Ong, H.Y.; Kok, P.W. [and others

1996-12-31T23:59:59.000Z

195

Manipulation of the HIFVegf pathway rescues methyl tert-butyl ether (MTBE)-induced vascular lesions  

SciTech Connect (OSTI)

Methyl tert-butyl ether (MTBE) has been shown to be specifically anti-angiogenic in piscine and mammalian model systems at concentrations that appear non-toxic in other organ systems. The mechanism by which MTBE targets developing vascular structures is unknown. A global transcriptome analysis of zebrafish embryos developmentally exposed to 0.006255 mM MTBE suggested that hypoxia inducible factor (HIF)-regulated pathways were affected. HIF-driven angiogenesis via vascular endothelial growth factor (vegf) is essential to the developing vasculature of an embryo. Three rescue studies were designed to rescue MTBE-induced vascular lesions: pooled blood in the common cardinal vein (CCV), cranial hemorrhages (CH), and abnormal intersegmental vessels (ISV), and test the hypothesis that MTBE toxicity was HIFVegf dependent. First, zebrafish vegf-a over-expression via plasmid injection, resulted in significantly fewer CH and ISV lesions, 46 and 35% respectively, in embryos exposed to 10 mM MTBE. Then HIF degradation was inhibited in two ways. Chemical rescue by N-oxaloylglycine significantly reduced CCV and CH lesions by 30 and 32% in 10 mM exposed embryos, and ISV lesions were reduced 24% in 5 mM exposed zebrafish. Finally, a morpholino designed to knock-down ubiquitin associated von HippelLindau protein, significantly reduced CCV lesions by 35% in 10 mM exposed embryos. In addition, expression of some angiogenesis related genes altered by MTBE exposure were rescued. These studies demonstrated that MTBE vascular toxicity is mediated by a down regulation of HIFVegf driven angiogenesis. The selective toxicity of MTBE toward developing vasculature makes it a potentially useful chemical in the designing of new drugs or in elucidating roles for specific angiogenic proteins in future studies of vascular development. - Highlights: Global gene expression of MTBE exposed zebrafish suggested altered HIF1 signaling. Over expression of zebrafish vegf-a rescues MTBE-induced vascular lesions. Inhibiting PHD or knocking down VHL rescues MTBE-induced vascular lesions. HIF1-Vegf driven angiogenesis is a target for MTBE vascular toxicity.

Bonventre, Josephine A., E-mail: josephine.bonventre@oregonstate.edu [Rutgers, The State University of New Jersey, Joint Graduate Program in Toxicology, 170 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Rutgers, The State University of New Jersey, Department of Biochemistry and Microbiology, 76 Lipman Dr., New Brunswick, NJ 08901 (United States); Oregon State University, Department of Environmental and Molecular Toxicology, 1011 Agricultural and Life Sciences Bldg, Corvallis, OR 97331 (United States); Kung, Tiffany S., E-mail: tiffany.kung@rutgers.edu [Rutgers, The State University of New Jersey, Joint Graduate Program in Toxicology, 170 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Rutgers, The State University of New Jersey, Department of Biochemistry and Microbiology, 76 Lipman Dr., New Brunswick, NJ 08901 (United States); White, Lori A., E-mail: lawhite@aesop.rutgers.edu [Rutgers, The State University of New Jersey, Joint Graduate Program in Toxicology, 170 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Rutgers, The State University of New Jersey, Department of Biochemistry and Microbiology, 76 Lipman Dr., New Brunswick, NJ 08901 (United States); Cooper, Keith R., E-mail: cooper@aesop.rutgers.edu [Rutgers, The State University of New Jersey, Joint Graduate Program in Toxicology, 170 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Rutgers, The State University of New Jersey, Department of Biochemistry and Microbiology, 76 Lipman Dr., New Brunswick, NJ 08901 (United States)

2013-12-15T23:59:59.000Z

196

[sup 7]Li-NMR determination of stability constants as a function of temperature for lithium-crown ether complexes in a molten salt mixtures  

SciTech Connect (OSTI)

The stability constants of several crown ethers with lithium ion were determined by [sup 7]Li-NMR measurements. A room temperature, basic molten salt of the composition of 55/45 mol % 1-methyl-3-ethyl-imidazolium chloride to aluminum (III) chloride was used as solvent. On the basis of a 1:1 complex formation the following order was found for the stability constants of the investigated crown ethers: 18-crown-6 < 12-crown-4 < benzo-15-crown-5 < 15-crown-5. A temperature dependence study for 12-crown-4, benzo-15-crown-5, and 15-crown-5 was undertaken for the range 5-84[degree]C. Values of [Delta]H and [Delta]S were calculated. At 5.5[degree]C the splitting of the single, fast exchange peak into two separate signals was observed for benzo-15-crown-5, providing further evidence for the formation of the 1:1 complex. 34 refs., 4 figs., 5 tabs.

Gerhard, A. (Univ. of Utah, Salt Lake City, UT (United States) Univ. of Witten/Herdecke (Germany)); Cobranchi, D.P.; Garland, B.A.; Highley, A.M.; Huang, Y.H.; Konya, G.; Eyring, E.M. (Univ. of Utah, Salt Lake City, UT (United States)); Zahl, A.; Eldik, R. van (Univ. of Witten/Herdecke (Germany)); Petrucci, S. (Polytechnic Univ., Farmingdale, NY (United States))

1994-08-11T23:59:59.000Z

197

A MILD OXIDJ.TION OF ALDEHYDES TO ir,B-LMATURATEU ALDEHYDES David K. Willm~s"' and Klyoshl Nishltani  

E-Print Network [OSTI]

led to mixtures. - Notably enol acetates and ethers have been recognized as excellent substrates-hydroxy selenldes which are conven- iently transformed into vinyl selenides, epoxldes, olefins, and allylic alcohols

Williams, David R.

198

Observation and Nature of Non-statistical Dynamic Effects in Ordinary Organic Reactions  

E-Print Network [OSTI]

.? Such * Reprinted with permission from ?Competition between Reaction and Intramolecular Energy Redistribution in Solution: Observation and Nature of Nonstatistical Dynamics in the Ozonolysis of Vinyl Ethers? by L.M. Quijano and D. A. Singleton. Journal...

Quijano, Larisa Mae Mangaliman 1984-

2012-10-17T23:59:59.000Z

199

EAST CAROLINA UNIVERSITY HAZARDOUS CHEMICAL USE GRANT REVIEW FORM ECU policy requires that all grant proposals involving the use of hazardous chemicals be reviewed by an institutional review committee or  

E-Print Network [OSTI]

-benezene 4-Aminodiphenyl Asbestos Coal tar pitch volatiles Methyl chloromethyl ether Formaldehyde Vinyl chloride Coke oven emissions 1,2-dibromo-3-chloropropane Lead Cadmium Benzene Cotton dust Chromium VI

200

Ethers help gasoline quality  

SciTech Connect (OSTI)

In this article three scenarios to evaluate the effect of etherification on gasoline production and quality are reviewed: Base case FCC/C{sub 4} alkylation complex - FCC unit operation for maximum gasoline yield, MTBE unit added to base case FCC unit operation and MTBE unit added to maximum olefins FCC unit operation. Details of the FCC, MTBE and C{sub 4} alkylation operations used in this article are reviewed, followed by a discussion of overall results.

Chang, E.J.; Leiby, S.M. (SRI International, Menlo Park, CA (US))

1992-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Treatment of methyl tert-butyl ether vapors in a biotrickling filters. 2. Analysis of the rate-limiting step and behavior under transient conditions  

SciTech Connect (OSTI)

Detailed experiments were performed with gas phase biotrickling filters treating vapors of methyl tert-butyl ether (MTBE), a gasoline additive of great environmental concern. A particular emphasis was placed on the analysis of the rate-limiting step, and it was found that the process was mostly limited by the biological reaction rather than by mass transfer. Further experiments involved the study of the dynamic behavior of the biotrickling filters under simulated field conditions. In all cases, the biotrickling filters adapted rapidly to the new conditions, and new steady states were obtained within hours. The relevance of the results and the implications as far as implementation of biotrickling filters for field MTBE treatment are discussed.

Fortin, N.Y.; Deshusses, M.A. [Univ. of California, Riverside, CA (United States). Dept. of Chemical and Environmental Engineering] [Univ. of California, Riverside, CA (United States). Dept. of Chemical and Environmental Engineering

1999-09-01T23:59:59.000Z

202

Combined 3D-QSAR, molecular docking and molecular dynamics study on thyroid hormone activity of hydroxylated polybrominated diphenyl ethers to thyroid receptors ?  

SciTech Connect (OSTI)

Several recent reports suggested that hydroxylated polybrominated diphenyl ethers (HO-PBDEs) may disturb thyroid hormone homeostasis. To illuminate the structural features for thyroid hormone activity of HO-PBDEs and the binding mode between HO-PBDEs and thyroid hormone receptor (TR), the hormone activity of a series of HO-PBDEs to thyroid receptors ? was studied based on the combination of 3D-QSAR, molecular docking, and molecular dynamics (MD) methods. The ligand- and receptor-based 3D-QSAR models were obtained using Comparative Molecular Similarity Index Analysis (CoMSIA) method. The optimum CoMSIA model with region focusing yielded satisfactory statistical results: leave-one-out cross-validation correlation coefficient (q{sup 2}) was 0.571 and non-cross-validation correlation coefficient (r{sup 2}) was 0.951. Furthermore, the results of internal validation such as bootstrapping, leave-many-out cross-validation, and progressive scrambling as well as external validation indicated the rationality and good predictive ability of the best model. In addition, molecular docking elucidated the conformations of compounds and key amino acid residues at the docking pocket, MD simulation further determined the binding process and validated the rationality of docking results. -- Highlights: ? The thyroid hormone activities of HO-PBDEs were studied by 3D-QSAR. ? The binding modes between HO-PBDEs and TR? were explored. ? 3D-QSAR, molecular docking, and molecular dynamics (MD) methods were performed.

Li, Xiaolin [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China)] [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China); Ye, Li [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China)] [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China); Wang, Xiaoxiang [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China)] [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China); Wang, Xinzhou [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China)] [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China); Liu, Hongling [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China)] [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China); Zhu, Yongliang [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China)] [Suzhou NeuPharma Co.,Ltd, Suzhou 215123 (China); Yu, Hongxia, E-mail: hongxiayu01@yahoo.com.cn [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China)] [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046 (China)

2012-12-15T23:59:59.000Z

203

Kinetics and mechanism of the sonolytic destruction of methyl tert-butyl ether by ultrasonic irradiation in the presence of ozone  

SciTech Connect (OSTI)

The kinetics and mechanism of the sonolytic degradation of methyl tert-butyl ether (MTBE) have been investigated at an ultrasonic frequency of 205 kHz and power of 200 W L{sup {minus}1}. The observed first-order degradation rate constant for the loss of MTBE increased from 4.1 {times} 10{sup {minus}4} s{sup {minus}1} to 8.5 {times} 10{sup {minus}4} s{sup {minus}1} as the concentration of MTBE decreased from 1.0 to 0.01 mM. In the presence of O{sub 3}, the sonolytic rate of destruction of MTBE was accelerated substantially. The rate of MTBE sonolysis with ozone was enhanced by a factor of 1.5--3.9 depending on the initial concentration of MTBE. tert-Butyl formate, tert-butyl alcohol, methyl acetate, and acetone were found to be the primary intermediates and byproducts of the degradation reaction with yields of 8, 5, 3, and 12%, respectively. A reaction mechanism involving three parallel pathways that include the direct pyrolytic decomposition of MTBE, the direct reaction of MTBE with ozone, and the reaction of MTBE with hydroxyl radical is proposed.

Kang, J.W. [Yonsei Univ., Wonju (Korea, Republic of). Dept. of Industrial Environment and Health] [Yonsei Univ., Wonju (Korea, Republic of). Dept. of Industrial Environment and Health; Hoffmann, M.R. [California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Labs.] [California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Labs.

1998-10-15T23:59:59.000Z

204

Cytotoxic and DNA-damaging effects of methyl tert-butyl ether and its metabolites on HL-60 cells in vitro  

SciTech Connect (OSTI)

Methyl tert-butyl ether (MTBE) is a widely used oxygenate in unleaded gasoline; however, few studies have been conducted on the toxicity of this compound. This study evaluates the cytotoxic and DNA-damaging effects of MTBE and its metabolites in a human haemopoietic cell line, HL-60. The metabolites of MTBE studied include tertiary butyl alcohol (TBA), {alpha}-hydroxyisobutyric acid (HIBA), and formaldehyde. Comet assay is used to assess DNA damage, and the cytotoxicity is investigated by lactate dehydrogenease (LDH) release. The results show no significant cytotoxic effects of MTBE, TBA, and HIBA over a concentration ranging from 1 to 30 mM. Formaldehyde, in contrast, causes a substantial LDH release at a concentration of 5 {mu}M. Hydrogen peroxide, a known oxidative agent, at concentrations ranging from 10 to 100 {mu}M, produces a significant dose-related increase in DNA damage, whereas a much higher concentration of MTBE (1 to 30 mM) is required to produce a similar observation. The genotoxic effects of TBA and HIBA appear to be identical to that of MTBE. Conversely, DNA damage is observed for formaldehyde at a relatively low concentration range (5 to 100 {mu}M). These findings suggest that MTBE and its metabolites, except formaldehyde, have relatively low cytotoxic and genotoxic effects. 16 refs., 4 figs.

Tang, G.H. [Xian Medical Univ. (China); Shen, Y.; Shen, H.M. [National Univ. of Singapore (Singapore)] [and others

1996-12-31T23:59:59.000Z

205

Treatment of methyl tert-butyl ether vapors in biotrickling filters. 1. Reactor startup, steady-state performance, and culture characteristics  

SciTech Connect (OSTI)

An aerobic microbial consortium able to biodegrade methyl tert-butyl ether (MTBE) was enriched in two waste air biotrickling filters after continuous operation for 6 months. After this acclimation phase, the two laboratory-scale biotrickling filters were able to degrade up to 50 g of MTBE per cubic meter of reactor per hour, a value comparable to other gasoline constituents. Such high performance could be sustained for at least 4--6 weeks. After the acclimation phase, the MTBE degrading biotrickling filters were characterized by their almost full conversion of MTBE to carbon dioxide and the absence of any degradation byproducts in either the gas or the liquid phase. They also exhibited a very high specific degradation activity per amount of biomass, and a low rate of biomass accumulation. An observed biomass yield of 0.1 g g{sup {minus}1} and a specific growth rate of 0.025 day{sup {minus}1} were determined for the biotrickling filter process culture. Further data on MTBE mass transfer and on the dynamic behavior of the biotrickling filter are presented in part 2 of this paper. Overall, the results demonstrate that MTBE can be effectively biodegraded under carefully controlled environmental conditions.

Fortin, N.Y.; Deshusses, M.A. [Univ. of California, Riverside, CA (United States). Dept. of Chemical and Environmental Engineering] [Univ. of California, Riverside, CA (United States). Dept. of Chemical and Environmental Engineering

1999-09-01T23:59:59.000Z

206

Low pour crude oil compositions  

SciTech Connect (OSTI)

This patent describes and improvement in the process of transporting waxy crude oils through a pipeline. It comprises: incorporating into the crude oil an effective pour point depressant amount of an additive comprising a polymer selected from the group consisting of copolymers of ethylene and acrylonitrile, and terpolymers of ethylene, acrylonitrile and a third monomer selected from the group consisting of vinyl acetate, carbon monoxide, alkyl acrylates, alkyl methacrylates, alkyl vinyl ethers, vinyl chloride, vinyl fluoride, acrylic acid, and methacrylic acid, wherein the amount of third monomer in the terpolymer ranges from about 0.1 to about 10.0 percent by weight.

Motz, K.L.; Latham, R.A.; Statz, R.J.

1990-05-22T23:59:59.000Z

207

Effect of Ethanol and Methyl-tert-Butyl Ether on Monoaromatic Hydrocarbon Biodegradation: Response Variability for Different Aquifer Materials Under Various Electron-Accepting Conditions  

SciTech Connect (OSTI)

Aquifer microcosms were used to determine how ethanol and methyl-tert-butyl ether (MtBE) affect monoaromatic hydrocarbon degradation under different electron-accepting conditions commonly found in contaminated sites experiencing natural attenuation. Response variability was investigated by using aquifer material from four sites with different exposure history. The lag phase prior to BTEX (benzene, toluene, ethylbenzene, and xylenes) and ethanol degradation was typically shorter in microcosms with previously contaminated aquifer material, although previous exposure did not always result in high degradation activity. Toluene was degraded in all aquifer materials and generally under a broader range of electron-accepting conditions compared to benzene, which was degraded only under aerobic conditions. MtBE was not degraded within 100 days under any condition, and it did not affect BTEX or ethanol degradation patterns. Ethanol was often degraded before BTEX compounds, and had a variable effect on BTEX degradation as a function of electron-accepting conditions and aquifer material source. An occasional enhancement of toluene degradation by ethanol occurred in denitrifying microcosms with unlimited nitrate; this may be attributable to the fortuitous growth of toluene-degrading bacteria during ethanol degradation. Nevertheless, experiments with flow-through aquifer columns showed that this beneficial effect could be eclipsed by an ethanol-driven depletion of electron acceptors, which significantly inhibited BTEX degradation and is probably the most important mechanism by which ethanol could hinder BTEX natural attenuation. A decrease in natural attenuation could increase the likelihood that BTEX compounds reach a receptor as well as the potential duration of exposure.

Ruiz-Aguilar, G L; Fernandez-Sanchez, J M; Kane, S R; Kim, D; Alvarez, P J

2003-10-06T23:59:59.000Z

208

Electrophilic Metal Alkyl Chemistry in New Ligand Environments  

SciTech Connect (OSTI)

The goals of this project were to design new electrophilic metal alkyl complexes and to exploit these systems in fundamental studies of olefin polymerization and other important and new catalytic reactions. A key target reaction is insertion copolymerization of olefins and polar CH2=CHX vinyl monomers such as vinyl halides and vinyl ethers. During the period covered by this report we (i) investigated the properties of ortho-alkoxy-arylphosphine ligands in Ni-based olefin polymerization catalysts, (ii) studied the synthesis of double-end-capped polyethylene using group 4 metal catalysts that contain tris-pyrazolylborate ligands, (iii) explored the ethylene insertion reactivity of group 4 metal tris-pyrazolyl-borate complexes, (iv) showed that (?-diimine)PdMe{sup +} species undergo multiple insertion of silyl vinyl ethers, (v) synthesized and explored the reactivity of base-free Ni benzyl complexes that contain ortho-phosphino-arene sulfonate ligands, (vi) established the mechanism of the reaction of vinyl chloride with (?-diimine)PdMe{sup +} catalysts, (vii) explored the role of cationic polymerization and insertion chemistry in the reactions of vinyl ethers with (?-diimine)PdMe{sup +} species, (viii) discovered a new class of self-assembled tetranuclear Pd catalysts that produce high molecular weight linear polyethylene and copolymerize ethylene and vinyl fluoride, and (ix) developed model systems that enabled investigation of cis-trans isomerization of {phosphine-sulfonate}Pd(II) complexes.

Jordan, Richard F. [University of Chicago] University of Chicago

2013-06-30T23:59:59.000Z

209

Polybrominated diphenyl ethers in e-waste: Level and transfer in a typical e-waste recycling site in Shanghai, Eastern China  

SciTech Connect (OSTI)

Highlights: PBDEs were detected in the majority of e-waste. PBDEs were found in TVs made in China after 1990. The levels of ?PBDEs in e-waste made in Japan far exceed the threshold limit of RoHS. The inappropriate recycling and disposal of e-waste is an important source of PBDEs. - Abstract: Very few data for polybrominated diphenyl ethers (PBDEs) were available in the electronic waste (e-waste) as one of the most PBDEs emission source. This study reported concentrations of PBDEs in e-waste including printer, rice cooker, computer monitor, TV, electric iron and water dispenser, as well as dust from e-waste, e-waste dismantling workshop and surface soil from inside and outside of an e-waste recycling plant in Shanghai, Eastern China. The results showed that PBDEs were detected in the majority of e-waste, and the concentrations of ?PBDEs ranged from not detected to 175 g/kg, with a mean value of 10.8 g/kg. PBDEs were found in TVs made in China after 1990. The mean concentrations of ?PBDEs in e-waste made in Korea, Japan, Singapore and China were 1.84 g/kg, 20.5 g/kg, 0.91 g/kg, 4.48 g/kg, respectively. The levels of ?PBDEs in e-waste made in Japan far exceed the threshold limit of RoHS (1.00 g/kg). BDE-209 dominated in e-waste, accounting for over 93%. The compositional patterns of PBDEs congeners resembled the profile of Saytex 102E, indicating the source of deca-BDE. Among the samples of dust and surface soil from a typical e-waste recycling site, the highest concentrations of ?{sub 18}PBDEs and BDE-209 were found in dust in e-waste, ranging from 1960 to 340,710 ng/g and from 910 to 320,400 ng/g, which were 12 orders of magnitude higher than other samples. It suggested that PBDEs released from e-waste via dust, and then transferred to surrounding environment.

Li, Yue; Duan, Yan-Ping, E-mail: duanyanping@tongji.edu.cn; Huang, Fan; Yang, Jing; Xiang, Nan; Meng, Xiang-Zhou; Chen, Ling

2014-06-01T23:59:59.000Z

210

13-03-09 9:37 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 | Ether Wave Propaganda Page 1 of 4http://etherwave.wordpress.com/2012/10/21/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-2/  

E-Print Network [OSTI]

13-03-09 9:37 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 | Ether Wave Propaganda Page 1 of 4http://etherwave.wordpress.com/2012/10/21/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-2/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 October 21, 2012 Posted

Solovey, Mark

211

12-11-24 7:47 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/11/17/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-3/  

E-Print Network [OSTI]

12-11-24 7:47 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/11/17/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-3/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 November 17, 2012 Posted

Solovey, Mark

212

13-03-09 9:32 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/22/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-1/  

E-Print Network [OSTI]

13-03-09 9:32 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/22/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-1/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 September 22, 2012 Posted

Solovey, Mark

213

Acetylene Inhibition of Trichloroethene and Vinyl Chloride  

E-Print Network [OSTI]

and enhanced anaerobic remediation of chloroethenes at contaminated sites. The results also suggest that acetylene produced abiotically by reactions of chlorinated ethenes with zero-valent iron could inhibit water standard (2 µg/L) (3). A variety of biochemical tools have been used to probe the complexity

Semprini, Lewis

214

Vinyl Siding Institute (VSI) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov PtyInformation UCOpenVerona,HamptonVinland, Wisconsin: EnergySiding Institute

215

Density functional theory study of the interaction of vinyl radical, ethyne, and ethene with benzene, aimed to define an affordable computational level to investigate stability trends in large van der Waals complexes  

SciTech Connect (OSTI)

Our purpose is to identify a computational level sufficiently dependable and affordable to assess trends in the interaction of a variety of radical or closed shell unsaturated hydro-carbons A adsorbed on soot platelet models B. These systems, of environmental interest, would unavoidably have rather large sizes, thus prompting to explore in this paper the performances of relatively low-level computational methods and compare them with higher-level reference results. To this end, the interaction of three complexes between non-polar species, vinyl radical, ethyne, or ethene (A) with benzene (B) is studied, since these species, involved themselves in growth processes of polycyclic aromatic hydrocarbons (PAHs) and soot particles, are small enough to allow high-level reference calculations of the interaction energy ?E{sub AB}. Counterpoise-corrected interaction energies ?E{sub AB} are used at all stages. (1) Density Functional Theory (DFT) unconstrained optimizations of the A?B complexes are carried out, using the B3LYP-D, ?B97X-D, and M06-2X functionals, with six basis sets: 6-31G(d), 6-311 (2d,p), and 6-311++G(3df,3pd); aug-cc-pVDZ and aug-cc-pVTZ; N07T. (2) Then, unconstrained optimizations by Mller-Plesset second order Perturbation Theory (MP2), with each basis set, allow subsequent single point Coupled Cluster Singles Doubles and perturbative estimate of the Triples energy computations with the same basis sets [CCSD(T)//MP2]. (3) Based on an additivity assumption of (i) the estimated MP2 energy at the complete basis set limit [E{sub MP2/CBS}] and (ii) the higher-order correlation energy effects in passing from MP2 to CCSD(T) at the aug-cc-pVTZ basis set, ?E{sub CC-MP}, a CCSD(T)/CBS estimate is obtained and taken as a computational energy reference. At DFT, variations in ?E{sub AB} with basis set are not large for the title molecules, and the three functionals perform rather satisfactorily even with rather small basis sets [6-31G(d) and N07T], exhibiting deviation from the computational reference of less than 1 kcal mol{sup ?1}. The zero-point vibrational energy corrected estimates ?(E{sub AB}+ZPE), obtained with the three functionals and the 6-31G(d) and N07T basis sets, are compared with experimental D{sub 0} measures, when available. In particular, this comparison is finally extended to the naphthalene and coronene dimers and to three ??? associations of different PAHs (R, made by 10, 16, or 24 C atoms) and P (80 C atoms)

Maranzana, Andrea, E-mail: andrea.maranzana@unito.it, E-mail: anna.giordana@hotmail.com, E-mail: vincenzo.barone@sns.it, E-mail: mauro.causa@unina.it, E-mail: mipavone@unina.it; Giordana, Anna, E-mail: andrea.maranzana@unito.it, E-mail: anna.giordana@hotmail.com, E-mail: vincenzo.barone@sns.it, E-mail: mauro.causa@unina.it, E-mail: mipavone@unina.it; Indarto, Antonius, E-mail: antonius.indarto@che.itb.ac.id; Tonachini, Glauco, E-mail: glauco.tonachini@unito.it [Dipartimento di Chimica, Universit di Torino, Corso Massimo DAzeglio 48, I-10125 Torino (Italy)] [Dipartimento di Chimica, Universit di Torino, Corso Massimo DAzeglio 48, I-10125 Torino (Italy); Barone, Vincenzo, E-mail: andrea.maranzana@unito.it, E-mail: anna.giordana@hotmail.com, E-mail: vincenzo.barone@sns.it, E-mail: mauro.causa@unina.it, E-mail: mipavone@unina.it [Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa (Italy)] [Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa (Italy); Caus, Mauro, E-mail: andrea.maranzana@unito.it, E-mail: anna.giordana@hotmail.com, E-mail: vincenzo.barone@sns.it, E-mail: mauro.causa@unina.it, E-mail: mipavone@unina.it [Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Universit di Napoli Federico II, Via Cintia, 80126 Napoli (Italy)] [Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Universit di Napoli Federico II, Via Cintia, 80126 Napoli (Italy); Pavone, Michele, E-mail: andrea.maranzana@unito.it, E-mail: anna.giordana@hotmail.com, E-mail: vincenzo.barone@sns.it, E-mail: mauro.causa@unina.it, E-mail: mipavone@unina.it [Dipartimento di Scienze Chimiche, Universit di Napoli Federico II, Complesso Universitario di Monte SantAngelo, Via Cintia, I-80126 Napoli (Italy)] [Dipartimento di Scienze Chimiche, Universit di Napoli Federico II, Complesso Universitario di Monte SantAngelo, Via Cintia, I-80126 Napoli (Italy)

2013-12-28T23:59:59.000Z

216

Sonolytic destruction of methyl tert-butyl ether by ultrasonic irradiation: The role of O{sub 3}, H{sub 2}O{sub 2}, frequency, and power density  

SciTech Connect (OSTI)

The kinetics of degradation of methyl tert-butyl ether (MTBE) by ultrasonic irradiation in the presence of ozone as functions of applied frequencies and applied power are investigated. Experiments are performed over the frequency range of 205--1,078 kHz. The higher overall reaction rates are observed at 358 and 618 kHz and then at 205 and 1,078 kHz. The observed pseudo-first-order rate constant, k{sub 0}, for MTBE degradation increases with increasing power density up to 250 W L{sup {minus}1}. A linear dependence of the first-order rate constant, k{sub O{sub 3}}, for the simultaneous degradation of O{sub 3} on power density is also observed. Naturally occurring organic matter (NOM) is shown to have a negligible effect on observed reaction rates.

Kang, J.W.; Hung, H.M.; Lin, A.; Hoffmann, M.R. [California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Labs.] [California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Labs.

1999-09-15T23:59:59.000Z

217

Separation of gases through gas enrichment membrane composites  

DOE Patents [OSTI]

Thin film composite membranes having as a permselective layer a film of a homopolymer of certain vinyl alkyl ethers are useful in the separation of various gases. Such homopolymers have a molecular weight of greater than 30,000 and the alkyl group of the vinyl alkyl monomer has from 4 to 20 carbon atoms with branching within the alkyl moiety at least at the carbon atom bonded to the ether oxygen or at the next adjacent carbon atom. These membranes show excellent hydrolytic stability, especially in the presence of acidic or basic gaseous components.

Swedo, R.J.; Kurek, P.R.

1988-07-19T23:59:59.000Z

218

13-03-09 9:30 PMCold War Social Science and the Rubric of the "Cold War" | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/06/cold-war-social-science-and-the-rubric-of-the-cold-war/  

E-Print Network [OSTI]

13-03-09 9:30 PMCold War Social Science and the Rubric of the "Cold War" | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/06/cold-war-social-science-and-the-rubric-of-the-cold-war/ Cold War Social Science and the Rubric of the "Cold War" September 6, 2012 Posted by Will Thomas in EWP

Solovey, Mark

219

{gamma}-aminobutyric acid{sub A} (GABA{sub A}) receptor regulates ERK1/2 phosphorylation in rat hippocampus in high doses of Methyl Tert-Butyl Ether (MTBE)-induced impairment of spatial memory  

SciTech Connect (OSTI)

Experimental and occupational exposure to Methyl Tert-Butyl Ether (MTBE) has been reported to induce neurotoxicological and neurobehavioral effects, such as headache, nausea, dizziness, and disorientation, etc. However, the molecular mechanisms involved in MTBE-induced neurotoxicity are still not well understood. In the present study, we investigated the effects of MTBE on spatial memory and the expression and function of GABA{sub A} receptor in the hippocampus. Our results demonstrated that intraventricular injection of MTBE impaired the performance of the rats in a Morris water maze task, and significantly increased the expression of GABA{sub A} receptor {alpha}1 subunit in the hippocampus. The phosphorylation of ERK1/2 decreased after the MTBE injection. Furthermore, the decreased ability of learning and the reduction of phosphorylated ERK1/2 level of the MTBE-treated rats was partly reversed by bicuculline injected 30 min before the training. These results suggested that MTBE exposure could result in impaired spatial memory. GABA{sub A} receptor may play an important role in the MTBE-induced impairment of learning and memory by regulating the phosphorylation of ERK in the hippocampus.

Zheng Gang; Zhang Wenbin [Department of Occupational and Environmental Health, School of Public Health and Military Preventive Medicine, Fourth Military Medical University, Xi'an 710032 (China); Zhang Yun [465 Hospital, Jilin Medical College, Jilin 132001 (China); Chen Yaoming; Liu Mingchao; Yao Ting; Yang Yanxia; Zhao Fang [Department of Occupational and Environmental Health, School of Public Health and Military Preventive Medicine, Fourth Military Medical University, Xi'an 710032 (China); Li Jingxia; Huang Chuanshu [Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987 (United States); Luo Wenjing [Department of Occupational and Environmental Health, School of Public Health and Military Preventive Medicine, Fourth Military Medical University, Xi'an 710032 (China)], E-mail: luowenj@fmmu.edu.cn; Chen Jingyuan [Department of Occupational and Environmental Health, School of Public Health and Military Preventive Medicine, Fourth Military Medical University, Xi'an 710032 (China)], E-mail: jy_chen@fmmu.edu.cn

2009-04-15T23:59:59.000Z

220

Degradation of polymer/substrate interfaces an attenuated total reflection Fourier transform infrared spectroscopy approach  

E-Print Network [OSTI]

Degradation of polymer/substrate interfaces ­ an attenuated total reflection Fourier transform-co-vinyl acetate) (PVB) and ZnSe upon exposure to ozone, humidity and UV-B light. Also, the response of PVB ether of bisphenol A)-aluminum interfaces. In the presence of ozone, humidity and UV-B radiation

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Synthesis of an A/B/C Triblock Copolymer for Battery Materials Applications  

E-Print Network [OSTI]

Section tert-Butylamine, cobalt chloride, and ethyl vinyl ether were purchased from Aldrich. Butyllithium incorporate metal salts. The organocobalt monomer was chosen due to the difficulty of polymerizing a lithium- containing monomer. The electrochemical reaction shown in reaction 1 is different from other lithium battery

Rubloff, Gary W.

222

Preliminary Evaluation of the Field and Laboratory Emission Cell (FLEC) for Sampling Attribution Signatures from Building Materials  

SciTech Connect (OSTI)

This study provides a preliminary evaluation of the Field and Laboratory Emission Cell (FLEC) for its suitability for sampling building materials for toxic compounds and their associated impurities and residues that might remain after a terrorist chemical attack. Chemical warfare (CW) agents and toxic industrial chemicals were represented by a range of test probes that included CW surrogates. The test probes encompassed the acid-base properties, volatilities, and polarities of the expected chemical agents and residual compounds. Results indicated that dissipation of the test probes depended heavily on the underlying material. Near complete dissipation of almost all test probes occurred from galvanized stainless steel within 3.0 hrs, whereas far stronger retention with concomitant slower release was observed for vinyl composition floor tiles. The test probes displayed immediated permanence on Teflon. FLEC sampling was further evaluated by profiling residues remaining after the evaporation of 2-chloroethyl ethyl sulfide, a sulfur mustard simulant. This study lays the groundwork for the eventual goal of applying this sampling approach for collection of forensic attribution signatures that remain after a terrorist chemical attack.

Harvey, Scott D.; He, Lijian; Wahl, Jon H.

2012-08-30T23:59:59.000Z

223

High Temperature, Low Relative Humidity, Polymer-type Membranes Based on Disulfonated Poly(arylene ether) Block and Random Copolymers Optionally Incorporating Protonic Conducting Layered Water insoluble Zirconium Fillers  

SciTech Connect (OSTI)

Our research group has been engaged in the past few years in the synthesis of biphenol based partially disulfonated poly(arylene ether sulfone) random copolymers as potential PEMs. This series of polymers are named as BPSH-xx, where BP stands for biphenol, S stands for sulfonated, H stands for acidified and xx represents the degree of disulfonation. All of these sulfonated copolymers phase separate to form nano scale hydrophilic and hydrophobic morphological domains. The hydrophilic phase containing the sulfonic acid moieties causes the copolymer to absorb water. Water confined in hydrophilic pores in concert with the sulfonic acid groups serve the critical function of proton (ion) conduction and water transport in these systems. Both Nafion and BPSH show high proton conductivity at fully hydrated conditions. However proton transport is especially limited at low hydration level for the BPSH random copolymer. It has been observed that the diffusion coefficients of both water and protons change with the water content of the pore. This change in proton and water transport mechanisms with hydration level has been attributed to the solvation of the acid groups and the amount of bound and bulk-like water within a pore. At low hydration levels most of the water is tightly associated with sulfonic groups and has a low diffusion coefficient. This tends to encourage isolated domain morphology. Thus, although there may be significant concentrations of protons, the transport is limited by the discontinuous morphological structure. Hence the challenge lies in how to modify the chemistry of the polymers to obtain significant protonic conductivity at low hydration levels. This may be possible if one can alter the chemical structure to synthesize nanophase separated ion containing block copolymers. Unlike the BPSH copolymers, where the sulfonic acid groups are randomly distributed along the chain, the multiblock copolymers will feature an ordered sequence of hydrophilic and hydrophobic segments. If, like in Nafion, connectivity is established between the hydrophilic domains in these multiblock copolymers, they will not need as much water, and hence will show much better protonic conductivity than the random copolymers (with similar degree of sulfonation, or IEC) at partially hydrated conditions. The goal of this research is to develop a material suitable for use as a polymer electrolyte membrane which by the year 2010 will meet all the performance requirements associated with fuel cell operation at high temperatures and low relative humidity, and will out-perform the present standard Nafion{reg_sign}. In particular, it is our objective to extend our previous research based on the use of thermally, oxidatively, and hydrolytically, ductile, high Tg ion containing polymers based on poly(arylene ethers) to the production of polymer electrolyte membranes which will meet all the performance requirements in addition to having an areal resistance of < 0.05 ohm-cm{sup 2} at a temperature of up to 120 C, relative humidity of 25 to 50%, and up to 2.5 atm total pressure. In many instances, our materials already out performs Nafion{reg_sign}, and it is expected that with some modification by either combining with conductive inorganic fillers and/or synthesizing as a block copolymer it will meet the performance criteria at high temperatures and low relative humidity. A key component in improving the performance of the membranes (and in particular proton conductivity) and meeting the cost requirements of $40/m{sup 2} is our development of a film casting process, which shows promise for generation of void free thin films of uniform thickness with controlled polymer alignment and configuration.

McGrath, James E.; Baird, Donald G.

2010-06-03T23:59:59.000Z

224

Determination of Methyl tert-Butyl Ether and tert-Butyl Alcohol in Water by Solid-Phase Microextraction/Head Space Analysis in Comparison to EPA Method 5030/8260B  

SciTech Connect (OSTI)

Methyl tert-butyl ether (MTBE) is now one of the most common groundwater contaminants in the United States. Groundwater contaminated with MTBE is also likely to be contaminated with tert-butyl alcohol (TBA), because TBA is a component of commercial grade MTBE, TBA can also be used as a fuel oxygenate, and TBA is a biodegradation product of MTBE. In California, MTBE is subject to reporting at concentrations greater than 3 {micro}g/L. TBA is classified as a ''contaminant of current interest'' and has a drinking water action level of 12 {micro}g/L. In this paper, we describe the development and optimization of a simple, automated solid phase microextraction (SPME) method for the analysis of MTBE and TBA in water and demonstrate the applicability of this method for monitoring MTBE and TBA contamination in groundwater, drinking water, and surface water. In this method, the headspace (HS) of a water sample is extracted with a carboxen/polydimethylsiloxane SPME fiber, the MTBE and TBA are desorbed into a gas chromatograph (GC), and detected using mass spectrometry (MS). The method is optimized for the routine analysis of MTBE and TBA with a level of quantitation of 0.3 {micro}g/L and 4 {micro}g/L, respectively, in water. MTBE quantitation was linear for over two orders of concentration (0.3 {micro}g/L -80 {micro}g/L). TBA was found to be linear within the range of 4 {micro}g/L-7,900 {micro}g/L. The lower level of detection for MTBE is 0.03 {micro}g/L using this method. This SPME method using headspace extraction was found to be advantageous over SPME methods requiring immersion of the fiber into the water samples, because it prolonged the life of the fiber by up to 400 sample analyses. This is the first time headspace extraction SPME has been shown to be applicable to the measurement of both MTBE and TBA at concentrations below regulatory action levels. This method was compared with the certified EPA Method 5030/8260B (purge-and-trap/GC/MS) using split samples from laboratory bioreactors treating MTBE contaminated water and applied to environmental samples collected throughout the East Bay area of California. Results from the SPME-HS/GC/MS method were directly comparable to the EPA Method 5030/8260B. This method provides an simple, inexpensive, accurate, and sensitive alternative to EPA Method 5030/8260B for the analysis of MTBE and TBA in water samples.

Oh, Keun-Chan; Stringfellow, William T.

2003-10-02T23:59:59.000Z

225

Mode of action of ethyl tertiary-butyl ether hepatotumorigenicity in the rat: Evidence for a role of oxidative stress via activation of CAR, PXR and PPAR signaling pathways  

SciTech Connect (OSTI)

To elucidate possible mode of action (MOA) and human relevance of hepatotumorigenicity in rats for ethyl tertiary-butyl ether (ETBE), male F344 rats were administered ETBE at doses of 0, 150 and 1000 mg/kg body weight twice a day by gavage for 1 and 2 weeks. For comparison, non-genotoxic carcinogen phenobarbital (PB) was applied at a dose of 500 ppm in diet. Significant increase of P450 total content and hydroxyl radical levels by low, high doses of ETBE and PB treatments at weeks 1 and 2, and 8-OHdG formation at week 2, accompanied accumulation of CYP2B1/2B2, CYP3A1/3A2 and CYP2C6, and downregulation of DNA oxoguanine glycosylase 1, induction of apoptosis and cell cycle arrest in hepatocytes, respectively. Up-regulation of CYP2E1 and CYP1A1 at weeks 1 and 2, and peroxisome proliferation at week 2 were found in high dose ETBE group. Results of proteome analysis predicted activation of upstream regulators of gene expression altered by ETBE including constitutive androstane receptor (CAR), pregnane-X-receptor (PXR) and peroxisome proliferator-activated receptors (PPARs). These results indicate that the MOA of ETBE hepatotumorigenicity in rats may be related to induction of oxidative stress, 8-OHdG formation, subsequent cell cycle arrest, and apoptosis, suggesting regenerative cell proliferation after week 2, predominantly via activation of CAR and PXR nuclear receptors by a mechanism similar to that of PB, and differentially by activation of PPARs. The MOA for ETBE hepatotumorigenicity in rats is unlikely to be relevant to humans. - Highlights: We focus on MOA and human relevance of hepatotumorigenicity in rats for ETBE. ETBE was administered to F344 rats for 1 and 2 weeks. Oxidative stress formation, proliferation and apoptosis in the liver are analyzed. ETBE-induced changes of gene and protein expression in the liver are examined. The effects are compared with those induced by non-genotoxic carcinogen PB.

Kakehashi, Anna, E-mail: anna@med.osaka-cu.ac.jp [Department of Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585 (Japan); Hagiwara, Akihiro; Imai, Norio [DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya, Aichi 491-0113 (Japan); Nagano, Kasuke [Nagano Toxicologic-Pathology Consulting, Ochiai, Hadano, Kanagawa 257-0025 (Japan); Nishimaki, Fukumi [Biofuel Assessment Group, New Fuels Dept., Japan Petroleum Energy Center (JPEC), 4-3-9 Toranomon, Minato-ku, Tokyo 105-0001 (Japan); Banton, Marcy [Toxicology and Risk Assessment, LyondellBasell Industries, LyondellBasell Corporate HSE/Product Safety, One Houston Center, Suite 700, 1221 McKinney Street, Houston, TX 770 10 (United States); Wei, Min [Department of Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585 (Japan); Fukushima, Shoji [Department of Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585 (Japan); Japan Bioassay Research Center, Japan Industrial Safety and Health Association, 2445 Hirasawa, Hadano, Kanagawa 257-0011 (Japan); Wanibuchi, Hideki [Department of Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585 (Japan)

2013-12-01T23:59:59.000Z

226

Polybrominated dibenzo-p-dioxins/dibenzofurans and polybrominated diphenyl ethers in soil, vegetation, workshop-floor dust, and electronic shredder residue from an electronic waste recycling facility and in soils from a chemical industrial complex in eastern China  

SciTech Connect (OSTI)

In this study, 11 2,3,7,8-substituted PBDD/Fs and 10 polybrominated diphenyl ether (PBDE) congeners were determined in electronic shredder waste, workshop-floor dust, soil, and leaves (of plants on the grounds of the facility) from a large-scale electronic wastes (e-waste) recycling facility and in surface soil from a chemical-industrial complex (comprising a coke-oven plant, a coal-fired power plant, and a chlor-alkali plant) as well as agricultural areas in eastern China. Total PBDD/F concentrations in environmental samples were in the range of 113-818 pg/g dry wt (dw) for leaves, 392-18,500 pg/g dw for electronic shredder residues, 716-80,0000 pg/g dw for soil samples, and 89,600-14,3000 pg/g dw for workshop-floor dust from the e-waste recycling facility and in a range from nondetect (ND) to 427 pg/g dw in soil from the chemical-industrial complex. The highest mean concentrations of total PBDD/Fs were found in soil samples and workshop-floor dust from the e-waste recycling facility. The dioxin-like toxic equivalent (measured as TEQ) concentrations of PBDD/Fs were greater than the TEQs of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) reported in our previous study for the same set of samples. The concentrations of PBDFs were several orders of magnitude higher than the concentrations of PBDDs in samples from the e-waste facility or from soil from the chemical-industrial complex. A significant correlation was found between the concentrations of {Sigma}PBDD/Fs and {Sigma}PBDEs (r = 0.769, p < 0.01) and between SPBDD/Fs and the previously reported SPCDD/F concentrations (r = 0.805, p < 0.01). The estimated daily human intakes of TEQs contributed by PBDD/Fs via soil/dust ingestion and dermal exposures in e-waste recycling facilities were higher than the intakes of TEQs contributed by PCDD/Fs, calculated in our previous study. 45 refs., 2 figs., 2 tabs.

Jing Ma; Rudolf Addink; Sehun Yun; Jinping Cheng; Wenhua Wang; Kurunthachalam Kannan [Shanghai Jiao Tong University, Shanghai (China). School of Environmental Science and Engineering

2009-10-01T23:59:59.000Z

227

amine methanol, ether . Amine amine CO2  

E-Print Network [OSTI]

, . promoter . 1.2 CO2 HBGS process CO2 , CO2 . CO2 , IGCC (Integrated Gasification Combined Cycle) (fuel gas) CO2 . IGCC CO2 H2 . (gasification) CO H2 (water gas shift reaction) H2 CO CO2 . CO2 H2 turbine H2 . H2 , CO2 #12;. fuel gas CO2 40%, 60% H2 . fuel gas (gasification) HBGS process . CO2 CO2 . venture

Hong, Deog Ki

228

Synthesis of Dihydrobenzofurans via Palladium-Catalyzed Heteroannulations  

SciTech Connect (OSTI)

Palladium-catalyzed heteroannulation of 1,3-dienes with 3-iodo-2-alkenols, and 2-iodo-2-alkenols, as well as their amino analogs, affords the corresponding cyclic ethers and amines respectively. The presence of a {beta}-hydrogen in the vinylic halide results in {beta}-hydride elimination giving the corresponding alkyne. The presence of a bulky group in the {alpha}-position of the vinylic halide results in failure or reduced amounts of annulation products. A chloride source, pyridine base and electron-rich phosphine are essential for this reaction.

Roman Vladimirovich Rozhkov

2004-12-19T23:59:59.000Z

229

NIOSH Manual of Analytical Methods (third edition). Fourth supplement  

SciTech Connect (OSTI)

The NIOSH Manual of Analytical Methods, 3rd edition, was updated for the following chemicals: allyl-glycidyl-ether, 2-aminopyridine, aspartame, bromine, chlorine, n-butylamine, n-butyl-glycidyl-ether, carbon-dioxide, carbon-monoxide, chlorinated-camphene, chloroacetaldehyde, p-chlorophenol, crotonaldehyde, 1,1-dimethylhydrazine, dinitro-o-cresol, ethyl-acetate, ethyl-formate, ethylenimine, sodium-fluoride, hydrogen-fluoride, cryolite, sodium-hexafluoroaluminate, formic-acid, hexachlorobutadiene, hydrogen-cyanide, hydrogen-sulfide, isopropyl-acetate, isopropyl-ether, isopropyl-glycidyl-ether, lead, lead-oxide, maleic-anhydride, methyl-acetate, methyl-acrylate, methyl-tert-butyl ether, methyl-cellosolve-acetate, methylcyclohexanol, 4,4'-methylenedianiline, monomethylaniline, monomethylhydrazine, nitric-oxide, p-nitroaniline, phenyl-ether, phenyl-ether-biphenyl mixture, phenyl-glycidyl-ether, phenylhydrazine, phosphine, ronnel, sulfuryl-fluoride, talc, tributyl-phosphate, 1,1,2-trichloro-1,2,2-trifluoroethane, trimellitic-anhydride, triorthocresyl-phosphate, triphenyl-phosphate, and vinyl-acetate.

Not Available

1990-08-15T23:59:59.000Z

230

Natural attenuation of organophosphates in river systems: Chattahoochee River case study  

E-Print Network [OSTI]

Three organophosphoric acid triesters, tributyl phosphate (TBP), tris(2-chloroethyl) phosphate (TCEP), and tris(2-butoxyethyl) phosphate (TBEP) have been detected in surface waters across the world, primarily the result ...

Andrews, Matthew B. (Matthew Bryan), 1981-

2004-01-01T23:59:59.000Z

231

Synthesis of vinyl acetate on palladium-based catalysts  

E-Print Network [OSTI]

...................................................................................8 Surface Science Techniques..............................................................................................10 X-ray Photoelectron Spectroscopy (XPS)...................................................................11 Auger... the energy level diagram of Auger electron emission process............................................................................................................................15 Fig. 5. Schematic diagram of the Michelson interferometer used...

Kumar, Dheeraj

2009-06-02T23:59:59.000Z

232

Methods for the synthesis of deuterated vinyl pyridine monomers  

DOE Patents [OSTI]

Methods for synthesizing deuterated vinylpyridine compounds of the Formula (1), wherein the method includes: (i) deuterating an acyl pyridine of the Formula (2) in the presence of a metal catalyst and D.sub.2O, wherein the metal catalyst is active for hydrogen exchange in water, to produce a deuterated acyl compound of Formula (3); (ii) reducing the compound of Formula (3) with a deuterated reducing agent to convert the acyl group to an alcohol group, and (iii) dehydrating the compound produced in step (ii) with a dehydrating agent to afford the vinylpyridine compound of Formula (1). The resulting deuterated vinylpyridine compounds are also described.

Hong, Kunlun; Yang, Jun; Bonnesen, Peter V

2014-02-25T23:59:59.000Z

233

Research Needs: Glass Solar Reflectance and Vinyl Siding  

E-Print Network [OSTI]

U.S. Department of Energy and model energy codes have madethe most commonly adopted model energy code in the U.S. for

Hart, Robert

2012-01-01T23:59:59.000Z

234

Vinyl Kraft Windows and Doors | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov PtyInformation UCOpenVerona,HamptonVinland, Wisconsin: Energy

235

Research Needs: Glass Solar Reflectance and Vinyl Siding  

E-Print Network [OSTI]

properties of reflected solar radiation from glass surfaces,transfer at the siding surface. Direct solar radiation tosiding, reflected solar radiation from nearby surfaces,

Hart, Robert

2012-01-01T23:59:59.000Z

236

acid vinyl ester: Topics by E-print Network  

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

stable thermodynamically and hydration free energies obtained Yu, Fangqun 280 ANTIBODY PURIFICATION USING CAPRYLIC ACID In mildly acidic conditions, the addition of short-chain...

237

The Palladium-Catalyzed Trifluoromethylation of Vinyl Sulfonates  

E-Print Network [OSTI]

A method for the palladium-catalyzed trifluoromethylation of cyclohexenyl sulfonates has been developed. Various cyclohexenyl triflates and nonaflates underwent trifluoromethylation under mild reaction conditions using a ...

Cho, Eun Jin

238

alternariol monomethyl ether: Topics by E-print Network  

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

Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A Montarnal, Nancy D. Eisenmenger, Sung-Yu Ku, Michael L....

239

The Ether Extract and the Chloroform Extract of Soils.  

E-Print Network [OSTI]

KNJJUG................................................................................................................Mailing Clerk STATE AGRICULTURAL EXPERIMENT STATIONS. H U M T 9 L 3L H G U . 9 Z R 11 3J X C I T P P T L I 0 Y uUM T 9 L U 9 0. B. A U P s S 3 D D ...................................................... Austin t 3 T S D T L . L D 1u U M T 9 L U 9 i 3 P P... n R r . 0 T J ......................................................Brownwood A U O O 3J J 3U L T 9 U o V H 9 3 I S P D S 9 T X Z w R dU L T ...................................................... Austin DIRECTOR OF EXPERIMENT STATIONS. B. l U...

Fraps, G. S.; Rather, J. B.

1913-01-01T23:59:59.000Z

240

allene ether nazarov: Topics by E-print Network  

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

Administration to become the nation's energy landscape. However, the environmental impacts associated with fracking'' for shale gas Angenent, Lars T. 213 Allen County...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Catalytic Asymmetric Synthesis of Hydroxy Enol Ethers: Approach to a  

E-Print Network [OSTI]

for the generation of polypro- pionate backbone.1-7 In contrast, the asymmetric acetate aldol reaction that leads associated with acetate aldol reactions have prompted investigations into alternative methods to generate the catalytic asymmetric allylation of aldehydes followed by oxidative cleavage of the allyl group (Scheme 1, A

Walsh, Patrick J.

242

Alternative Fuels Data Center: Dimethyl Ether (DME): Fuel of...  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

The AFDC is a resource of the U.S. Department of Energy's Clean Cities program. Contacts | Web Site Policies | U.S. Department of Energy | USA.gov Content Last Updated: 01022015...

243

Quantum-Gravity Phenomenology and the DSR Ether Theories  

E-Print Network [OSTI]

Guided primarily by versions of a theoretical framework called Doubly Special Relativity, or DSR, that are supposed to entail speeds of light that vary with energy while preserving the relativity of inertial frames, quantum-gravity phenomenologists have recently been seeking clues to quantum gravity, in hoped-for differing times of arrival, for light of differing energies, from cosmologically distant sources. However, it has long been known that signals, of arbitrarily high speed in opposing directions, could be used to observe the translational state of (absolute) rest, as could signals of a fixed speed different from c. Consequently, the above versions of DSR are nonviable.

Kenneth M. Sasaki

2010-09-20T23:59:59.000Z

244

Synthesis of Methanol and Dimethyl Ether from Syngas over Pd...  

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

of the catalysts has been established. Hence, two types of sites are required for the direct conversion of syngas to DME: 1) PdZn particles are active for the synthesis of...

245

Extractant composition including crown ether and calixarene extractants  

DOE Patents [OSTI]

An extractant composition comprising a mixed extractant solvent consisting of calix[4] arene-bis-(tert-octylbenzo)-crown-6 ("BOBCalixC6"), 4',4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 ("DtBu18C6"), and at least one modifier dissolved in a diluent. The DtBu18C6 may be present at from approximately 0.01M to approximately 0.4M, such as at from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol ("Cs-7SB") and may be present at from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The extractant composition further comprises an aqueous phase. The mixed extractant solvent may be used to remove cesium and strontium from the aqueous phase.

Meikrantz, David H. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Riddle, Catherine L. (Idaho Falls, ID); Law, Jack D. (Pocalello, ID); Peterman, Dean R. (Idaho Falls, ID); Mincher, Bruce J. (Idaho Falls, ID); McGrath, Christopher A. (Blackfoot, ID); Baker, John D. (Blackfoot, ID)

2009-04-28T23:59:59.000Z

246

Polybrominated Diphenyl Ethers in the Sediments of the Great Lakes.  

E-Print Network [OSTI]

source of many pollutants, including PCBs and dioxins, to the Great Lakes. This has been particularly analysis demonstrated that the pattern of PBDEs in Lake Superior sediments differs from those in air from the point sources. Sediments are an important sink and reservoir of per- sistent pollutants

Rockne, Karl J.

247

Surface Modification of Silicone Elastomer Using Perfluorinated Ether  

E-Print Network [OSTI]

of a silicone-coated substrate.29 In addition, higher molecular weight perfluoropolyethers have been included

Chaudhury, Manoj K.

248

Alternative Fuels lDimethyl Ether Rheology and Materials Studies |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartment ofEnergy Natural Gas:Austin, T X S9-0s)

249

Alternative Fuels Data Center: Dimethyl Ether (DME) as a Transportation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAreSmartWay TransportEthanolAll-ElectricCNGDiesel VehicleFuel

250

Studies of Various Hydrocarbon Conversion Reactions on Pt Catalysts  

E-Print Network [OSTI]

with various reactants. Acrolein, methyl vinyl ketone,hydrogenation products. Acrolein, methyl vinyl ketone,

Kaneko, Shinji

2011-01-01T23:59:59.000Z

251

Cationically polymerizable monomers derived from renewable sources  

SciTech Connect (OSTI)

The objectives of this project are to design and synthesize novel monomers which orginate from renewable biological sources and to carry out their rapid, efficient, pollution-free and energy efficient cationic polymerization to useful products under the influence of ultraviolet light or heat. A summary of the results of the past year's research on cationically polymerizable monomers derived from renewable sources is presented. Three major areas of investigation corresponding to the different classes of naturally occurring starting materials were investigated; epoxidized terpenes and natural rubber and vinyl ethers from alcohols and carbohydrates.

Crivello, J.V.

1992-10-01T23:59:59.000Z

252

Cationically polymerizable monomers derived from renewable sources. Annual performance report  

SciTech Connect (OSTI)

The objectives of this project are to design and synthesize novel monomers which orginate from renewable biological sources and to carry out their rapid, efficient, pollution-free and energy efficient cationic polymerization to useful products under the influence of ultraviolet light or heat. A summary of the results of the past year`s research on cationically polymerizable monomers derived from renewable sources is presented. Three major areas of investigation corresponding to the different classes of naturally occurring starting materials were investigated; epoxidized terpenes and natural rubber and vinyl ethers from alcohols and carbohydrates.

Crivello, J.V.

1992-10-01T23:59:59.000Z

253

Age and growth of black drum (Pogonias cromis) from Galveston Bay, Texas  

E-Print Network [OSTI]

Bertalanffy Growth Equation SUMMARY RECOMMENDATIONS FOR FUTURE STUDIES REFERENCES VITA Page 1 8 10 10 16 20 21 24 24 24 25 25 27 28 29 31 32 33 36 LIST OF TABLES Total number, mean lengths (mm) and weight (g) for black drum from... mixture poured into plastic peel- away molds (22 mm wide x 25 mm tong x 22 mm deep). The embedding mixture was produced by mixing vinyl cyclohexene dioxide, diglycidyl ether and nonenyl succinic anhydride in concentrations of 10. 0, 4. 0, and 26. 0 g...

King, John Mark

1992-01-01T23:59:59.000Z

254

Plant Physiol. (1991) 97, 409-414 0032-0889/91 /97/0409/06/$01 .00/0  

E-Print Network [OSTI]

inhibitor (2-chloroethyl)trimethylammonium chloride can cause abortion of flowers in Pharbitis if applied 7 Institutes of Health grant GM40553. Abbreviations: GA, gibberellin; PMC(s), pollen mother cell to a certain point, but then normal development ceases and flower buds eventually abort. Nester and Zeevaart

Jacobsen, Steve

255

Monodisperse SiC/vinyl ester nanocomposites: Dispersant formulation, synthesis, and characterization  

E-Print Network [OSTI]

and composites with epoxy resins: Topography, fractographyreinforced polypropylene and epoxy resin composites. Compos.filled polypropylene and epoxy resin com- posites, 22 carbon

Yong, Virginia; Hahn, H. Thomas

2011-01-01T23:59:59.000Z

256

Localized Plasticity in the Streamlined Genomes of Vinyl Chloride Respiring Dehalococcoides  

E-Print Network [OSTI]

2005) Genome sequence of the PCE-dechlorinating bacteriumlevels and pseudo-steady-state PCE respiration rates inreductive dehalogenases in a PCE-dechlorinating flow column.

McMurdie, Paul J.

2010-01-01T23:59:59.000Z

257

Rate-dependent deformation behavior of poss-filled and plasticized poly(vinyl chloride)  

E-Print Network [OSTI]

Polymers are known to exhibit strong time-dependent mechanical behavior. In different temperatures or frequency regimes, the rate sensitivities of polymers change as various primary and secondary molecular mobility mechanisms ...

Soong, Sharon Yu-Wen

2007-01-01T23:59:59.000Z

258

The impact of improved materials in poly(vinyl chloride)-based endotracheal tubes  

E-Print Network [OSTI]

Endotracheal tubes (ETs) are used to aid artificial ventilation in millions of medical patients every year and are known to invoke the proliferative phase in the cell linings. The technical objective of this work was to ...

Domike, Kristin Rebecca, 1981-

2004-01-01T23:59:59.000Z

259

Synthetic Approaches to Skeletally Diverse Sultams Using Vinyl- and ?-Halo Benzenesulfonamides  

E-Print Network [OSTI]

ranging from chiral auxiliaries in asymmetric synthesis,2 , 3 artificial sweeteners (saccharin) in the food industry,4 and ionic liquids serving as novel reaction media,5 to a growing number of medicinal agents. To date, there are several sultam..., in 2004, reported an innovative approach for secondary amine synthesis using the pKa properties nitrobenzenesulfonamides.10 This method has been widely utilized in both industry and academia. S NH MeOO Calculations NH MeO-0.58 -0.62+1.26-0.30 +0...

Jeon, KyuOk

2012-08-31T23:59:59.000Z

260

Poly(vinyl alcohol)-based buffering membranes for isoelectric trapping separations  

E-Print Network [OSTI]

Isoelectric trapping (IET) in multicompartment electrolyzers (MCE) has been widely used for the electrophoretic separation of ampholytic compounds such as proteins. In IET, the separation occurs in the buffering membranes that form a step-wise p...

Craver, Helen C.

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

aerobic vinyl chloride-assimilating: Topics by E-print Network  

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

organic sulfides,6 and perfluorinated polyesters,7,8 have been used to create release coatings Chaudhury, Manoj K. 425 1283J. Blumel, F. H. Kohler Metallated...

262

Localized Plasticity in the Streamlined Genomes of Vinyl Chloride Respiring Dehalococcoides  

E-Print Network [OSTI]

Conceived and designed the experiments: PJM SFB FEL AMS.Performed the experiments: PJM SFB KMR.Analyzed the data: PJM SFB JAM JG KMR RW EG AL SH FEL AMS.

McMurdie, Paul J.

2010-01-01T23:59:59.000Z

263

Tetrahedron: Asymmetry report number 86 a-Vinylic amino acids: occurrence, asymmetric synthesis,  

E-Print Network [OSTI]

-Substituted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871 2.3. c-Substituted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871 2.3.1. MVG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871 2.3.2. AVG

Berkowitz, David

264

Vinyl Ester Resin: Rheological Behaviors, Curing Kinetics, Thermomechanical, and Tensile Properties  

E-Print Network [OSTI]

, Integrated Composites Laboratory (ICL), Lamar University, Beaumont, TX 77710 Xi Zhang and Suying Wei Dept. of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710 Henry A. Colorado Dept. of Mechanical

Guo, John Zhanhu

265

Energetics of Homogeneous Intermolecular Vinyl and Allyl Carbon-Hydrogen Bond Activation by the  

E-Print Network [OSTI]

oxidation of methane, the primary component of natural gas, to methanol.1 This challenge may be generalized, but loss of olefin is observed at 22 °C in benzene solution to generate TpRh(CNneo)(Ph)H (t1/2 ) 16.6 h alkyl amido species. Despite the disparate nature of these systems, a common theme in their respective

Jones, William D.

266

Localized Plasticity in the Streamlined Genomes of Vinyl Chloride Respiring Dehalococcoides  

E-Print Network [OSTI]

dehalogenation of chlorinated dioxins by an anaerobic14], phenols [15], dibenzo-p-dioxins [16], dibenzofurans,

McMurdie, Paul J.

2010-01-01T23:59:59.000Z

267

Effect of pulse intensity distributions on fragment internal energy in the infrared multiphoton dissociation of vinyl  

E-Print Network [OSTI]

Effect of pulse intensity distributions on fragment internal energy in the infrared multiphoton of laser intensity on the production of fragment energy distribu- tions. Laser induced fluorescence (LIF pumping is pro- portional to the light intensity, the final energy of the parent molecule

Zare, Richard N.

268

Anodic polymerization of vinyl ethylene carbonate in Li-Ion battery electrolyte  

E-Print Network [OSTI]

Ethylene Carbonate in Li-Ion Battery Electrolyte Guoyingof a commercial Li-ion battery electrolyte containing 2 %are an important part of Li-ion battery technology yet their

Chen, Guoying; Zhuang, Guorong V.; Richardson, Thomas J.; Gao, Liu; Ross Jr., Philip N.

2005-01-01T23:59:59.000Z

269

Poly (vinyl alcohol)/3-(trimethylammonium) propyl-functionalized silica hybrid membranes for alkaline  

E-Print Network [OSTI]

oxidation and oxygen reduction reactions. As a result, the overall cost of the fuel cell system can for alkaline direct ethanol fuel cells E.D. Wang, T.S. Zhao*, W.W. Yang Department of Mechanical Engineering Accepted 29 December 2009 Available online 8 January 2010 Keywords: Fuel cell Direct ethanol fuel cell

Zhao, Tianshou

270

Poly(vinyl alcohol) (PVA)/sulfonated polyhedral oligosilsesquioxane (sPOSS) hybrid membranes  

E-Print Network [OSTI]

minimal resources, and are cost and energy efficient. Direct methanol fuel cells (DMFCs), in particular for direct methanol fuel cell applications Young-Wook Chang1*, Erdong Wang1y , Geumsig Shin1 , Jung-Eun Han1 exchange membranes in direct methanel fuel cell (DMFC) applications. Fourier transform infrared (FT

Mather, Patrick T.

271

Beam Damage of Poly(Vinyl Chloride) [PVC] Film as Observed by X-ray  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien, I. Ben-Zvi, P. Study

272

Beam damage of poly(vinyl chloride) [PVC] as observed by x-ray  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien, I. Ben-Zvi, P. StudyBeam Historyby

273

Electron Beam Damage in Poly(Vinyl Chloride) and Poly(Acrylonitrile) as  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing Zirconia Nanoparticles as Selective Sorbents . |of ZnOdensityVerticalObserved by

274

Energy Efficiency Improvement and Cost Saving Opportunities for the Petrochemical Industry - An ENERGY STAR(R) Guide for Energy and Plant Managers  

E-Print Network [OSTI]

930F) to produce vinyl chloride monomer. VCM is convertedDichloride / Vinyl Chloride Monomer Optimize recycle loopsEthylene dichloride and vinyl chloride monomer. A number of

Neelis, Maarten

2008-01-01T23:59:59.000Z

275

HOSPITAL VENTILATION STANDARDS AND ENERGY CONSERVATION: A SUMMARY OF THE LITERATURE WITH CONCLUSIONS AND RECOMMENDATIONS, FY 78 FINAL REPORT  

E-Print Network [OSTI]

TLV (EEm) ACGIH Vinyl Chloride (Monomer) 5 mg/m ACGIH NPPainters - Solvent Vinyl Chloride (Monomer) Engineering -IUPAC Naming System Vinyl Chloride (monomer) Route of Entry:

DeRoos, R.L.

2011-01-01T23:59:59.000Z

276

A BRIEF HISTORY OF INDUSTRIAL CATALYSIS  

E-Print Network [OSTI]

HYDROGENATIONS VINYL CHLORIDE MONOMER ( OXYCHLORINA'I'ION)and other monomers, such as vinyl- chloride, which cannot be

Heinemann, Heinz

2013-01-01T23:59:59.000Z

277

E-Print Network 3.0 - acetylenes Sample Search Results  

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

Collection: Materials Science 2 Acetylene Inhibition of Trichloroethene and Vinyl Chloride Summary: Acetylene Inhibition of Trichloroethene and Vinyl Chloride Reductive...

278

E-Print Network 3.0 - acetylene Sample Search Results  

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

Collection: Materials Science 2 Acetylene Inhibition of Trichloroethene and Vinyl Chloride Summary: Acetylene Inhibition of Trichloroethene and Vinyl Chloride Reductive...

279

An investigation in the hygrothermal degradation of an E- glass/vinyl-ester composite in humid and immersion environments  

E-Print Network [OSTI]

Water transport in epoxy resins. Progress in PolymerWater transport in epoxy resins. Prog. Polym. Sci. Vol.Diffusion Studies in an Epoxy Resin System. J. of Polymer

Svetlik, Stephanie Laura

2008-01-01T23:59:59.000Z

280

Model Predictive Control of a Nonlinear Large-Scale Process Network Used in the Production of Vinyl Acetate  

E-Print Network [OSTI]

columns. Industrial & Engineering Chemistry, 20:11961200,process. Industrial & Engineering Chemistry Research, 42:process. Industrial & Engineering Chemistry Research, 50:

Tu, TungSheng

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Photoredox Vinylation of Amino Acids and NAryl Amines Adam Noble and David W. C. MacMillan*  

E-Print Network [OSTI]

-tert- butoxycarbonyl (N-Boc) -amino acids,7,8 a CO2-extrusion mechanism that has implications for the use of biomass feedstocks in conjugate additions and organometallic couplings. Allylic amines have long been attractive

MacMillan, David W. C.

282

Ambipolar Behavior in All-Carbon-Nanotube Field-Effect Transistors by Poly(Vinyl Alcohol) Coating  

E-Print Network [OSTI]

parameter analyzer (Agilent 4156C) at room temperature under ambient conditions. Fig. 1 Schematic of device including SWNT diameter distribution, capacitances of PVA film, and I-V characteristics when coating. Wang, M. Shim, K. Roy, M. A. Alam and J. A. Rogers, Nature 454, 495 (2008). 2. D. M. Sun, M. Y

Maruyama, Shigeo

283

An investigation in the hygrothermal degradation of an E- glass/vinyl-ester composite in humid and immersion environments  

E-Print Network [OSTI]

known to accelerate UV degradation of polymer materials [with increased UV exposure [13], the degradation of materialthe UV spectrum has been observed to result in degradation

Svetlik, Stephanie Laura

2008-01-01T23:59:59.000Z

284

Model Predictive Control of a Nonlinear Large-Scale Process Network Used in the Production of Vinyl Acetate  

E-Print Network [OSTI]

both dynamic economic optimization and process control isand R. Amrit. Optimizing process economic performance usingOptimizing chemical processes from an economic perspective

Tu, TungSheng

2013-01-01T23:59:59.000Z

285

Control technology of vinyl chloride in EDC-VCM and PVC plants at main source points and fugitive emissions  

E-Print Network [OSTI]

in a boiler and the combustion gases scrubbed with water or a caustic solution to remove the hydrogen chloride to form hydrochloric acid or sodium chloride. According to the Trane Thermal Company, thermal incineration is a basic proven process... and fugitive emissions, (b) collection of data by using a questionaire ? survey from industries located in the United States, and (c) a statistical analysis of the data. It was found that thermal incineration is considered the best approach to control...

Parra, Dario Antonio

1983-01-01T23:59:59.000Z

286

Model Predictive Control of a Nonlinear Large-Scale Process Network Used in the Production of Vinyl Acetate  

E-Print Network [OSTI]

kcal/kg ? C a i Liquid heat capacity/enthalpy coefficientkg ? C 2 b i Liquid heat capacity/enthalpy coefficient fori kmol/m 3 c ? i Liquid heat capacity of species i kcal/

Tu, TungSheng

2013-01-01T23:59:59.000Z

287

Responsive copolymers for enhanced petroleum recovery. Quarterly technical progress report, June 23--September 21, 1994  

SciTech Connect (OSTI)

Summaries are given on the technical progress on three tasks of this project. Monomer and polymer synthesis discusses the preparation of 1(7-aminoheptyloxymethyl)naphthalene and poly(maleic anhydride-alt-ethyl vinyl ether). Task 2, Characterization of molecular structure, discusses terpolymer solution preparation, UV analysis, fluorescence analysis, low angle laser light scattering, and viscometry. The paper discusses the effects of hydrophobic groups, the effect of pH, the effect of electrolyte addition, and photophysical studies. Task 3, Solution properties, describes the factorial experimental design for characterizing polymer solutions by light scattering, the light scattering test model, orthogonal factorial test design, linear regression in coded space, confidence level for coded space test mode coefficients, coefficients of the real space test model, and surface analysis of the model equations.

McCormick, C.; Hester, R.

1994-12-31T23:59:59.000Z

288

Cleaning Products and Air Fresheners: Emissions and Resulting Concentrations of Glycol Ethers and Terpenoids  

E-Print Network [OSTI]

with realistic air-exchange and product usage rates, theand total rate of air freshener product volatilization (26, 589-597. Cleaning Product and Air Freshener Emissions (

Singer, Brett C.; Destaillat, Hugo; Hodgson, Alfred T.; Nazaroff, William W.

2005-01-01T23:59:59.000Z

289

Chlorine resistant desalination membranes based on directly sulfonated poly(arylene ether sulfone) copolymers  

DOE Patents [OSTI]

The present invention provides a membrane, kit, and method of making a hydrophilic-hydrophobic random copolymer membrane. The hydrophilic-hydrophobic random copolymer membrane includes a hydrophilic-hydrophobic random copolymer. The hydrophilic-hydrophobic random copolymer includes one or more hydrophilic monomers having a sulfonated polyarylsulfone monomer and a second monomer and one or more hydrophobic monomers having a non-sulfonated third monomer and a fourth monomer. The sulfonated polyarylsulfone monomer introduces a sulfonate into the hydrophilic-hydrophobic random copolymer prior to polymerization.

McGrath, James E. (Blacksburg, VA); Park, Ho Bum (Austin, TX); Freeman, Benny D. (Austin, TX)

2011-10-04T23:59:59.000Z

290

Cesium and strontium extraction using a mixed extractant solvent including crown ether and calixarene extractants  

DOE Patents [OSTI]

A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 ("BOBCalixC6"), 4',4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 ("DtBu18C6"), and at least one modifier dissolved in a diluent. The mixed extractant solvent may be used to remove cesium and strontium from an acidic solution. The DtBu18C6 may be present from approximately 0.01 M to approximately 0.4M, such as from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol ("Cs-7SB") and may be present from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The mixed extractant solvent may form an organic phase in an extraction system that also includes an aqueous phase. Methods of extracting cesium and strontium as well as strontium alone are also disclosed.

Meikrantz, David H. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Riddle, Catherine L. (Idaho Falls, ID); Law, Jack D. (Pocatello, ID); Peterman, Dean R. (Idaho Falls, ID); Mincher, Bruce J. (Idaho Falls, ID); McGrath, Christopher A. (Blackfoot, ID); Baker, John D. (Blackfoot, ID)

2007-11-06T23:59:59.000Z

291

Composition and Digestibility of the Ether Extract of Hays and Fodders.  

E-Print Network [OSTI]

, and saponify by boiling in a 500 cc erlenmeyer flask with a reflux condenser, for at least an hour, shaking gently from time to time, and being very careful to see that the caustic comes in contact with all the fat which may be present in the flask. Add 0... 4552 4554 4555 4556 4557 4559 4560 4561 Cowpea Hay __________ Excrement Sheep No. 2 Excrement Sheep No. 3. Sorghum Hay__________ Excrement Sheep No. 1. Excrement Sheep No. 2. Excrement Sheep No. 3. A lfa lfa Hay ___________ Excrement...

Fraps, G. S.; Rather, J. B.

1912-01-01T23:59:59.000Z

292

Treatment of Methyl tert-Butyl Ether Vapors in Biotrickling Filters. 1.  

E-Print Network [OSTI]

because of its low cost and blending characteristics. Depending on the season, reformulated gasoline of reactor per hour, a value comparable to other gasoline constituents. Such high performance could enhancer in gasoline. The use of MTBE increased rapidly after the 1990 Clean Air Act Amendments required

293

a-fluorinated ethers thioethers: Topics by E-print Network  

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

Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A Montarnal, Nancy D. Eisenmenger, Sung-Yu Ku, Michael L....

294

MC-CAM Publications "Allyl Glycidyl Ether-Based Polymer Electrolytes for Room Temperature Lithium Batteries"  

E-Print Network [OSTI]

­Acceptor Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A

Bigelow, Stephen

295

Structural Requirements and Reaction Pathways in Dimethyl Ether Combustion Catalyzed by Supported Pt Clusters  

E-Print Network [OSTI]

as a convenient energy carrier for distributed power generation, space heating, and diesel replace- ment combustion of DME because of its potential use in power generation and radiant heating devices and its

Iglesia, Enrique

296

MECHANISTIC STUDIES OF ARYL-OXYGEN BOND ACTIVATION IN A NICKEL(0) DIPHOSPHINE-ETHER COMPLEX  

E-Print Network [OSTI]

with nickel precursors was studied. A series of nickel(0) complexes containing nickel-arene interactions.1).1a,1b Quenching of the lithium species with an electrophilic species leads to the functionalization

Winfree, Erik

297

Synthesis of the C29-C37 Bicyclic Ether Core of (+)-Sorangicin A  

E-Print Network [OSTI]

's asymmetric allylation protocol (>95:5 dr).7 Diol 11 was protected as its p-methoxyphenyl acetal 12 would effect hydrolysis of the acetal to form diol 3 as well as catalyze the opening of the epoxide metathesis reaction with ethyl acrylate (Table 1). The cyclic acetal was chosen as the diol protecting group

298

Polybrominated diphenyl ethers in relation to autism and developmental delay: A case-control study  

E-Print Network [OSTI]

212:109-134. 5. Rose M, Bennett DH, Bergman A, Fangstrom B,Robin Hansen 4 , Deborah H Bennett 1 Abstract Background:

2011-01-01T23:59:59.000Z

299

Biodegradation of methyl tertiary butyl ether (MTBE) using a granular activated carbon trickling filter  

SciTech Connect (OSTI)

A pilot scale trickling filter was constructed using granular activated carbon (GAC) as the packing medium and inoculated with a microbial culture known to degrade MTBE. The packing dimensions were 0.076 m in diameter and 0.22 m deep. The unit operated with recycling flow for two months before a biofilm was observed on the GAC. After two additional months the biofilm had visibly spread throughout the packing. A few pieces of GAC were placed in a sealed bottle with MTBE-contaminated water and nutrients. Headspace analysis performed over 14 days confirmed that MTBE degradation was occurring. The trickling filter was converted to continuous flow and operated for one month at a nominal flow rate of 0.1 L/min and a hydraulic loading rate of 32 m{sup 3}/m{sup 2}-d. Samples were collected for analysis at the spray nozzle and at the bottom of the trickling filter. Fractional removal varied with influent MTBE concentration, temperature and liquid flow rate. Percent MTBE removal was as high as 85%. A mechanical failure resulted in the trickling filter bed drying and percent removal dropping to less than 1 percent. However, the system recovered within five days.

Converse, B.M.; Schroeder, E.D.; Chang, D.P.Y.

1999-07-01T23:59:59.000Z

300

Base-Mediated Cascade Rearrangements of Aryl-Substituted Diallyl Ethers  

E-Print Network [OSTI]

? 7.26 ppm and 77.2 ppm respectively. Infrared spectra were recorded as a thin film on KBr discs. High- resolution mass spectra were obtained on mass spectrometers using electrospray ionization (ESI) or electron impact ionization at 70 eV and TOF... alcohol (1 equiv.) in a dry, argon purged 10 mL round-bottomed flask at room temperature. The flask was fitted with a condenser and heated to 60 oC and allowed to stir overnight. The reaction mixture slowly turned deep brown after addition of the KHMDS...

Reid, Jolene P.; McAdam, Catherine A.; Johnston, Adam J. S.; Grayson, Matthew N.; Goodman, Jonathan M.; Cook, Matthew J.

2014-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

A mechanistic and experimental study on the diethyl ether oxidation S. Di Tommaso1-2  

E-Print Network [OSTI]

-00976232,version1-9Apr2014 Author manuscript, published in "AIChE Spring Meeting 2012 & 8. Global Congress] and theoretically [7], since it has a relevant role, due to its good ignition properties, in the domain of biofuels

Boyer, Edmond

302

Measurements of flatflame velocities of diethyl ether in air Fiona Gillespiea,b  

E-Print Network [OSTI]

biofuels are important in today's world due to a decline in oil and fossil fuels and an increase in CO2

Boyer, Edmond

303

The processing of alcohols, hydrocarbons and ethers to produce hydrogen for a PEMFC for transportation applications  

SciTech Connect (OSTI)

Wellman CJB Limited is involved in a number of projects to develop fuel processors to provide a hydrogen-rich fuel in Proton Exchange Membrane Fuel Cells (PEMFC) systems for transportation applications. This work started in 1990 which resulted in the demonstration of 10kW PEMFC system incorporating a methanol reformer and catalytic gas clean-up system. Current projects include: The development of a compact fast response methanol reformer and gas clean-up system for a motor vehicle; Reforming of infrastructure fuels including gasoline, diesel, reformulated fuel gas and LPG to produce a hydrogen rich gas for PEMFC; Investigating the potential of dimethylether (DME) as source of hydrogen rich gas for PEMFCs; The use of thin film palladium diffusers to produce a pure hydrogen stream from the hydrogen rich gas from a reformer; and Processing of naval logistic fuels to produce a hydrogen rich gas stream for PEMFC power system to replace diesel generators in surface ships. This paper outlines the background to these projects and reports their current status.

Dams, R.A.J.; Hayter, P.R.; Moore, S.C. [Wellman CJB Limited, Portsmouth (United Kingdom)

1997-12-31T23:59:59.000Z

304

Emission Characteristics of Jatropha- Dimethyl Ether Fuel Blends on A DI Diesel Engine  

E-Print Network [OSTI]

loads at the maximum torque.The engine speed was maintained at 1500 rpm. Here the jatropha oil is used

M. Loganathan; A. Anbarasu; A. Velmurugan

305

Crown Ethers Flatten in Graphene for Strong, Specific Binding | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User GroupInformationE-GovNaturalInstituteCrosscutting

306

The Copolymerization of CO_(2) and Cyclic Ethers and Their Degradation Pathways  

E-Print Network [OSTI]

alternating copolymerization of styrene oxide, epichlorohydrin, propylene oxide, cyclohexene oxide, indene oxide, and cyclopentene oxide with carbon dioxide have been investigated. Various reaction pathways can be found under different reaction conditions...

Wei, Sheng-Hsuan

2013-07-24T23:59:59.000Z

307

Tribology of Confined Fomblin-Z Perfluoropolyalkyl Ethers: Role of Chain-End Chemical Functionality  

E-Print Network [OSTI]

, polysiloxanes,1-4 polybutadiene,1,5 or perfluorinated perfluoropolyethers6-8) in which the chain end

Granick, Steve

308

Development of a Dimethyl Ether (DME)-Fueled Shuttle Bus | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct, Parent CompanyaUSAMP AMDHeavy Duty TrucksDevelopment of

309

The Total Fatty Acids and Other Ether-Soluable Constituents of Feedstuffs.  

E-Print Network [OSTI]

, BRAZOS COUNTY, TEXAS VON BOECKMANN-JONES CO., PRINTERS, AUSTIN, TEXAS 1914 AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS C h a r l e s P u r y e a r , President P ro Tem . TEXAS AGRICULTURAL EXPERIMENT STATION BOARD OF DIRECTORS Ch ah rles...Pehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Atin t??Pite ???? Ah Ch a ? H H ? t , ??i?PuhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhAtin t??Pite ???? ?h ?h ? P ? ? P ? n e , ??i...

Rather, J. B. (James Burness)

1914-01-01T23:59:59.000Z

310

E-Print Network 3.0 - archaeal isoprenoid ether Sample Search...  

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

6 79. Jordens, I., Marsman, M., Kuijl, C. & Neefjes, J. Rab proteins, connecting transport and vesicle fusion. Summary: to a glycerol moiety, whereas archaeal lipids typically...

311

Responses of the L51781Y tk/sup +//tk/sup -/ mouse lymphoma cell forward mutation assay: III. 72 coded chemicals  

SciTech Connect (OSTI)

Seventy-two chemicals were tested for their mutagenic potential in the L51781Y tk/sup +///sup -/ mouse lymphoma cell forward mutation assay, using procedures based upon those described previously. Cultures were exposed to the chemicals for 4 hr, then cultured for 2 days before planting in soft agar with or without trifluorothymidine (TFT), 3 ..mu..g/ml. The chemicals were tested at least twice. Significant responses were obtained with allyl isothiocyanate, p-benzoquinone dioxime, benzyl acetate, 2-biphenylamine HCl, bis(2-chloro-1-methylethyl)ether, cadmium chloride, chlordane, chlorobenzene, chlorobenzilate, 2-chloroethanol, chlorothalonil, cytarabine x HCl, p,p'-DDE, diazinon, 2,6-dichloro-p-phenylenediamine, N,N-diethylthiourea, diglycidylresorcinol ether, 2,4-dimethoxy aniline x HCl, disperse yellow 3, endosulfan, 1,2-epoxyhexadecane, ethyl acrylate, ethyl benzene, ethylene thiourea, F D and C yellow Number 6, furan, heptachlor, isophorone, mercuric chloride, 4,4'-methylenedianiline x 2 HCl, methyl viologen, nickel sulfate x 6H/sub 2/O, 4,4'-oxydianiline, pentachloroethane, piperonyl butoxide, propyl gallate, quinoline, rotenone, 2,4,5,6-tetrachloro-4-nitro-anisole, 1,1,1,2-tetrachloroethane, trichlorfon, 2,4,6-trichlorophenol, 2,4,5-trimethoxybenzaldehyde, 1,1,3-trimethyl-2-thiourea, 1-vinyl-3-cyclopetene dioxide, vinyl toluene, and ziram. The assay was incapable of providing a clear indication of whether some chemicals were mutagens; these benzyl alcohol, 1,4-dichlorobenzene, phenol, succinic acid-2,2-dimethyl hydrazide, and toluene.

McGregor, D.B.; Brown, A.; Cattanach, P.; Edwards, I.; McBride, D.; Riach, C.; Caspary, W.J.

1988-01-01T23:59:59.000Z

312

Influence of relaxation transitions on radiation-initiated cationic graft polymerization. [Gamma radiation  

SciTech Connect (OSTI)

Radiation grafting of vinyl n-butyl ether (VBE) to polyvinyl chloride (PVC) over a broad temperature range was investigated. The relaxation transitions in the PVC/VBE system were also determined. Grafting of vinyl alkyl ethers proceeds entirely by a cationic mechanism in a reaction medium that has been dried to a water concentration no greater than 0.1-1.0 ppm. In this connection, the diffusion properties of water in the temperature region were studied. Commercial films of unplasticized PVC (thickness 200 M); were subjected to swelling in two systems: in a 50% solution of VBE in benzene at 25/sup 0/C, and in the pure monomer at 40/sup 0/C. The reaction mixtures were first dried over metallic sodium in a deaerated atmosphere. The specimens were irradiated in a Co gamma-radiation unit to a dose of 10 kGy at a dose rate of 3 Gy/sec. The first reaction mixture was investigated over a range of temperatures from -60/sup 0/ to +70/sup 0/C, and the second from -15/sup 0/ to +50/sup 0/C. The degree of grafting was determined from the increase in weight of the original ungrafted film. The temperature was held to within +/-1/sup 0/C. The relaxation transitions in the swollen polymer systems were determined by two methods, thermostimulated current (TSC) and thermomechanics (TM). It was found that in the region of the glass transition of a swollen PVC-VBE system, radiation-initiated cationic graft polymerization proceeds at a maximal rate, and there are changes in state of the water molecules (the agents of breaking the ion reaction chain) and in their diffusion properties within the matrix.

Kudryavtsev, V.N.; Kabanov, V.Ya.; Chalykh, A.E.; Spitsyn, V.I.

1982-05-01T23:59:59.000Z

313

Polymer Preprints 2004, 45(2), CHARGE DENSITY EFFECTS IN SALT -FREE  

E-Print Network [OSTI]

-methyl-2-vinyl pyridinium chloride (PMVP-Cl) with various charge density and uncharged neutral parent poly of the random copolymers of 2-vinyl pyridine and N- methyl-2-vinyl pyridinium chloride. First, the parent dry P2 by serial dilution. Polymer concentration is reported in moles of monomers (vinyl pyridine or vinyl

Colby, Ralph H.

314

The synthesis of symmetrical bis-1,2,5-thiadiazole ligandsq Dean M. Philipp,a  

E-Print Network [OSTI]

for coordination catalysts for the copolymerization of polar monomers (such as vinyl chloride and vinyl acetate there have been no reliable reports of the coordination polymerization of vinyl acetate or vinyl chloride-hydroxy thia- diazole; Vinyl chloride. q Supplementary data associated with this article can be found

Goddard III, William A.

315

Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and  

E-Print Network [OSTI]

performed on stationary vinyl chloride monomer droplets and has provided values of effective reaction orders into the vinyl chloride monomer (VCM). As a c, ThierryOnline Monitoring of Vinyl Chloride Polymerization in a Microreactor Using Raman Spectroscopy

Paris-Sud XI, Université de

316

Polymer Reactor Design, Optimization and Control in Latex Production Technology.  

E-Print Network [OSTI]

?? During continuous emulsion polymerization of many monomers (e.g. vinyl acetate, vinyl chloride), sustained oscillations (limit cycles) occur in conversion and all the latex and (more)

Penlidis, Alexander

1986-01-01T23:59:59.000Z

317

E-Print Network 3.0 - agent-loaded polymeric nanocapsules Sample...  

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

Collection: Chemistry ; Engineering 63 New Aspects of the Suspension Polymerization of Vinyl Chloride in Relation to the Low Thermal Stability of Poly(Vinyl Chloride) Summary: New...

318

E-Print Network 3.0 - acid monomer induced Sample Search Results  

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

of Vinyl Chloride in Relation to the Low Thermal Stability of Poly(Vinyl Chloride) Summary: to be immediately attached to a monomer molecule, initiating new chain...

319

23/11/2009 S&I meeting 2009 1 NanoparticleNanoparticle--polymerpolymer  

E-Print Network [OSTI]

Divinyl ether-based polymer: HTP3 HTP3 components: 1,4-cyclohexyldimethanol divinyl ether (CHDV) monomer

Strathclyde, University of

320

E-Print Network 3.0 - aza podands communication Sample Search...  

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

metal complexing agents. The vaporization... ethers; Podands; Vaporization enthalpies; Sublimation enthalpies 1. Introduction Podands and crown ethers... enthalpies of the...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

DOI: 10.1002/chem.200902350 Rigid-Strut-Containing Crown Ethers and [2]Catenanes for Incorporation  

E-Print Network [OSTI]

as templates in the construction of me- chanically interlocked molecules (MIMs), such as catenanes (BPP34C10DA), and dicarboxylic acid 1,5-naphthoparaphenylene[36]crown-10 (NPP36C10DA). These novel10DA was determined by X- ray crystallography. The NPP36C10DA-based [2]catenane (H2NPP36C10DC-CAT·4PF

Yaghi, Omar M.

322

Gold(I)-catalyzed formation of furans by a Claisen-type rearrangement of ynenyl allyl ethers  

E-Print Network [OSTI]

June 2011 This article is part of the Thematic Series "Gold catalysis for organic synthesis". Guest in this field which have led to the development of a new procedure for the synthesis of polysubstituted furans of furans. Scheme 2: Synthetic approach to functionalized furans. ized pyrroles 3 (X = NTs) in the presence

Paris-Sud XI, Universit de

323

Investigation of HCCI Combustion of Diethyl Ether and Ethanol Mixtures Using Carbon 14 Tracing and Numerical Simulations  

E-Print Network [OSTI]

Ryan III, and J.S. Souder, "HCCI Operation of a Dual-FuelJ. Girard, and R. Dibble, "HCCI in a CFR Engine: Experimentsthe DOE University HCCI Program, and LLNL Laboratory

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W

2004-01-01T23:59:59.000Z

324

Alkaline-Side Extraction of Cesium from Savannah River Tank Waste Using a Calixarene-Crown Ether Extractant  

SciTech Connect (OSTI)

Results are presented supporting the viability of the alkaline-side CSEX process as a potential replacement for the In-Tank Precipitation process for removal of cesium from aqueous high-level waste (HLW) at the Savannah River Site (SRS). Under funding from the USDOE Efficient Separations and Crosscutting program, a flowsheet was suggested in early June of 1998, and in the following four months, this flowsheet underwent extensive testing, both in batch tests at ORNL and ANL and in two centrifugal-contactor tests at ANL. To carry out these tests, the initial ESP funding was augmented by direct funds from Westinghouse Savannah River Corporation. The flowsheet employed a solvent containing a calixarene-crown hybrid compound called BoBCalixC6 that was invented at ORNL and can now be obtained commercially for government use from IBC Advanced Technologies. This special extractant is so powerful and selective that it can be used at only 0.01 M, compensating for its expense, but a modifier is required for use in an aliphatic diluent, primarily to increase the cesium distribution ratio D{sub Cs} in extraction. The modifier selected is a relatively economical fluorinated alcohol called Cs3, invented at ORNL and so far available. only from ORNL. For the flowsheet, the modifier is used at 0.2 M in the branched aliphatic kerosene Isopar{reg_sign} L. Testing at ORNL and ANL involved simulants of the SRS HLW. After extraction of the Cs from the waste simulant, the solvent is scrubbed with 0.05 M HNO{sub 3} and stripped with a solution comprised of 0.0005 M HNO{sub 3} and 0.0001 M CsNO{sub 3}. The selection of these conditions is justified in this report, both on the basis of experimental data and underlying theory.

Bonnesen, P.V.; Delmau, L.H.; Haverlock, T.J.; Moyer, B.A.

1998-12-01T23:59:59.000Z

325

Development and Utilization of Camelid VHH Antibodies from Alpaca for 2,2,4,4-Tetrabrominated Diphenyl Ether Detection  

E-Print Network [OSTI]

chemicals list for the California Biomonitoring Program and are targets for the Centers for Disease Control and Prevention's National Report on Human Exposure to Environmental Chemicals. PBDEs have been found extensively States ABSTRACT: An antibody-based analytical method for the detection of a chemical flame retardant

Hammock, Bruce D.

326

Methyl tertiary butyl ether (MtBE) contamination of the City of Santa Monica drinking water supply  

SciTech Connect (OSTI)

In the summer of 1996, the City of Santa Monica ceased pumping groundwater from two Well Fields (Charnock and Arcadia) used for public drinking water supply due to persistent and increasing concentrations of MtBE in all seven municipal water supply wells. This lost production accounted for 50% of the City`s total drinking water supply. In late 1996, the City, in cooperation with State and Federal agencies, initiated an investigation of MtBE contamination at the two well fields. The objectives of the investigation were as follows: (1) Review available data on the production, use, chemical characteristics, fate and transport, toxicology, and remediation of MtBE; (2) Identify locations of potential sources of MtBE groundwater contamination at the well fields; (3) Develop an understanding of the hydrologic pathways from the potential sources to the drinking water wells; and (4) Evaluate alternative treatment technologies for the removal of MtBE from drinking water. In addition to a review of available information about MtBE, the investigation included an extensive review of literature and available data relevant to the well fields, including well field production histories, site and regional hydrogeology, all well logs and production in the groundwater basins, general groundwater quality, and the record of MtBE detection. Based upon the review of background information, conceptual hydrogeologic models were developed. A detailed review of agency files for over 45 potential source sites was conducted. The information from this review was summarized, and source site screening and ranking criteria were developed. A field program was conducted at the major well field (Charnock), including soil gas surveys, CPTs, soil borings and well installations, geophysics, and aquifer testing. The field program provided site data which allowed the conceptual hydrogeologic model to be refitted to actual site conditions.

Brown, A.; Farrow, J.R.C. [Komex H2O Science, Huntington Beach, CA (United States); Rodriguez, R.A. [City of Santa Monica, CA (United States)] [and others

1997-12-31T23:59:59.000Z

327

Whole-Genome Analysis of Methyl tert-Butyl Ether-Degrading Beta-Proteobacterium Methylibium petroleiphilum PM1  

E-Print Network [OSTI]

D. J. Slomczynski. 2003. BTEX/MTBE bioremediation: BionetsScow, and L. Alvarez-Cohen. MTBE and benzene biodegradationinteractions in BTEX and MTBE mixtures by an MTBE-degrading

2007-01-01T23:59:59.000Z

328

Review of potential technologies for the treatment of Methyl tertiary butyl Ether (MtBE) in drinking water  

SciTech Connect (OSTI)

At present, the state of knowledge on effective treatment technologies for MtBE in drinking water, and groundwater in general, is limited. Research by others is focusing on the remediation of MtBE close to the point of release. The City of Santa Monica, MWD, Komex and USC are currently conducting research into different technologies that could be used to remove MtBE from drinking water supplies. The objectives of the research are to evaluate different treatment technologies to identify cost-effective and technically feasible alternatives for the removal of MtBE from drinking water. The evaluation is considering moderate to high water flow rates (100 to 2,000+ gpm) and low to moderate MtBE concentrations (<2,000 {mu}g/l). The research program includes four phases: (1) Literature Review; (2) Bench Scale Study; (3) Field Scale Pre-pilot Study; and (4) Summary Evaluation. This paper presents some preliminary information and findings from the first phase of this research - the literature review. The review discusses the chemical properties of MtBE and how they affect remediation and thus, an evaluation of alternative treatment technologies. The review of available literature, and the applicability and limitations of the following technologies are presented in detail.

Brown, A.; Browne, T.E. [Komex H2O Science, Huntington Beach, CA (United States); Devinny, J.S. [Univ. of Southern California, Los Angeles, CA (United States)] [and others

1997-12-31T23:59:59.000Z

329

Development of air and dust sampling methods for quantitative measurements of polybromated diphenyl ethers (PBDEs) in offices  

E-Print Network [OSTI]

, published in "10. International Conference Healthy Buildings (HB2012), Brisbane : Australia (2012)" #12

Paris-Sud XI, Université de

330

Process Design, Simulation and Integration of Dimethyl Ether (DME) Production from Shale Gas by Direct and Indirect Methods  

E-Print Network [OSTI]

The reaction of partial oxidation is exothermic and the residence time is very short (? = 3.6-72 ms). The overall reaction between CH4 and O2 is; CH 4 + 0.5O 2 ? CO + 2H 2 ?H o 298K = ?36 kJ/mol (3... sufficient cooling of reactor to continue healthy reactor conditions because the reactions that occur in reactor are highly exothermic [32]. Type of reactor has significant effect on the final products in reactor. Multitubular fixed-bed reactors...

Karagoz, Secgin

2014-08-11T23:59:59.000Z

331

Synthesis of Methanol and Dimethyl Ether from Syngas over Pd/ZnO/Al2O3  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign Object Damage 3 B.Catalysts. | EMSL Methanol and

332

Palladium-Catalyzed Asymmetric Alkylation in the Synthesis of Cyclopentanoid and Cycloheptanoid Core Structures Bearing All-  

E-Print Network [OSTI]

, iodoethane, acrylonitrile, methyl vinyl ketone, and acrolein were distilled prior to use. Purified water

Stoltz, Brian M.

333

Chemico-Biological Interactions 166 (2007) 301316 Mortality patterns among industrial workers exposed to  

E-Print Network [OSTI]

of industrial workers exposed to chloroprene (CD) and other substances, including vinyl chloride monomer (VC

Illinois at Chicago, University of

334

Engineering and Health Impact Methods in Green Design Student projects PH 290 Sec 07  

E-Print Network [OSTI]

materials; process chemistry in producing vinyl chloride monomer; choices of antibacterial agents; need

Iglesia, Enrique

335

Charge Density Effects in Salt-Free Polyelectrolyte Solution Rheology  

E-Print Network [OSTI]

of 2-vinyl pyridine and N-methyl-2-vinyl pyridinium chloride random copolymers in ethylene glycol of 2-vinyl pyridine and N- methyl-2-vinyl pyridinium chloride (PMVP-Cl) of any charge density was studied over wide ranges of con- centration and effective charge. The fraction of quaternized monomers

Colby, Ralph H.

336

Intersections: SOURCE Symposium & Poster Session 2007 Winners  

E-Print Network [OSTI]

Weight in Poly(vinyl Alcohol) Clay Aerogel Composites." Mentor: Professor David Schiraldi, Macromolecular

Rollins, Andrew M.

337

European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3.25 MODELLING THE CURING DYNAMICS OF ETHYLENE-VINYL ACETATE  

E-Print Network [OSTI]

25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3. Alshuth2 , M. Köntges1 and R. Brendel1,3 1 Institute for Solar Energy Research Hamelin (ISFH), Am Ohrberg 1, D-31860 Emmerthal, Germany 2 German Institute of Rubber Technology, Eupener Stra?e 33, D-30519

338

168 JOURNAL OF VINYL & ADDITIVE TECHNOLOGY, DECEMBER 2004, Vol. 10, No. 4 Thirty-Year Durability of a 20-Mil PVC Geomembrane  

E-Print Network [OSTI]

of a 20-Mil PVC Geomembrane E. J. NEWMAN and T. D. STARK* Department of Civil & Environmental Engineering, Michigan. The 30.5-m-diameter re- search ponds were lined using a 0.51-mm-thick fish-grade PVC geomembrane behavior of the nearly 30-year-old PVC geomembrane is within current specifications for new 0.51-mm

339

Poly(vinyl alcohol) based hydrogen-bonded multilayers : from pH-controlled multi-stage dissolution to zwitter-wettable surfaces  

E-Print Network [OSTI]

Understanding the mechanisms that govern the structure and function of synthetic polymer thin films is of fundamental and practical significance for developing a diverse range of functional surfaces including antifogging ...

Lee, Hyomin, Ph. D. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

340

[Transition metal mediated transformations of small molecules  

SciTech Connect (OSTI)

Work on organotransition metal chemistry, homogeneous and heterogeneous catalysis is summarized. Several cationic palladium(II) complexes with bulky phosphine or pyridine ligands were discovered that are highly selective catalysts for linear dimerization of vinyl monomers and linear polymerization of p-divinylbenzene, the reactions proceeding through a carbocationic mechanism. Our studies were continued on alternating olefin-carbon monoxide copolymers. The copolymerization reaction and reactivity of copolymers were examined. New catalytic systems for alternating copolymerization of [alpha]-olefins with CO were discovered. In the case of styrene derivatives, tactic copolymers were obtained. Poly(ethylenepyrrolediyl) derivatives were synthesized from alternating ethylene-carbon monoxide copolymer and become electronic conductors when doped with iodine. A catalytic system for direct synthesis of polyureas and polyoxamides from and diamines was also discovered. Pt metal catalyzed the oxidation of ethers, esters, and amines to carboxylic acids and the oxidation of olefins to 1,2-diols. Anaerobic and aerobic decomposition of molybdenum(VI)-oxoalkyl compounds were studied for heterogeneous oxidation of alkanes and olefins on Mo(VI)-oxide surfaces. Synthesis of polymer-trapped metal, metal oxide, and metal sulfide nanoclusters (size <1--10 nm) was studied.

Sen, A.

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

[Transition metal mediated transformations of small molecules]. Progress report  

SciTech Connect (OSTI)

Work on organotransition metal chemistry, homogeneous and heterogeneous catalysis is summarized. Several cationic palladium(II) complexes with bulky phosphine or pyridine ligands were discovered that are highly selective catalysts for linear dimerization of vinyl monomers and linear polymerization of p-divinylbenzene, the reactions proceeding through a carbocationic mechanism. Our studies were continued on alternating olefin-carbon monoxide copolymers. The copolymerization reaction and reactivity of copolymers were examined. New catalytic systems for alternating copolymerization of {alpha}-olefins with CO were discovered. In the case of styrene derivatives, tactic copolymers were obtained. Poly(ethylenepyrrolediyl) derivatives were synthesized from alternating ethylene-carbon monoxide copolymer and become electronic conductors when doped with iodine. A catalytic system for direct synthesis of polyureas and polyoxamides from and diamines was also discovered. Pt metal catalyzed the oxidation of ethers, esters, and amines to carboxylic acids and the oxidation of olefins to 1,2-diols. Anaerobic and aerobic decomposition of molybdenum(VI)-oxoalkyl compounds were studied for heterogeneous oxidation of alkanes and olefins on Mo(VI)-oxide surfaces. Synthesis of polymer-trapped metal, metal oxide, and metal sulfide nanoclusters (size <1--10 nm) was studied.

Sen, A.

1992-10-01T23:59:59.000Z

342

Understanding Molecular Interactions within Chemically Selective Layered Polymer Assemblies  

SciTech Connect (OSTI)

This work focuses on two broad issues. These are (1) the molecular origin of the chemical selectivity achieved with ultrathin polymer multilayers, and (2) how the viscoelastic properties of the polymer layers are affected by exposure to solvent and analytes. These issues are inter-related, and to understand them we need to design experiments that probe both the energetic and kinetic aspects of interfacial adsorption processes. This project focuses on controling the chemical structure, thickness, morphology and sequential ordering of polymer layers bound to interfaces using maleimide-vinyl ether and closely related alternating copolymerization chemistry and efficient covalent cross-linking reactions that allow for layer-by-layer polymer deposition. This chemistry has been developed during the funding cycle of this Grant. We have measure the equilibrium constants for interactions between specific layers within the polymer interfaces and size-controlled, surface-functionalized gold nanoparticles. The ability to control both size and functionality of gold nanoparticle model analytes allows us to evaluate the average pore size that characterizes our polymer films. We have measured the bulk viscosity and shear modulus of the ultrathin polymer films as a function of solvent overlayer identity using quartz crystal microbalance complex impedance measurements. We have measured microscopic viscosity at specific locations within the layered polymer interfaces with time-resolved fluorescence lifetime and depolarization techniques. We combine polymer, cross-linking and nanoparticle synthetic expertise with a host of characterization techniques, including QCM gravimetry and complex impedance analysis, steady state and time-resolved spectroscopies.

Gary J. Blanchard

2009-06-30T23:59:59.000Z

343

Synthesis of new high performance lubricants and solid lubricants. Progress report, April 1992--March 1993  

SciTech Connect (OSTI)

Synthesis and testing was begun on a number of new classes of lubricants: perfluoropolyethers (branching effects), perfluoromethylene oxide ethers, chlorine-substituted fluorocarbon polyethers, fluorine-containing branched ether lubricants, glycerine- based perfluoropolyesters, perfluoro epoxy ether chains, etc.

Lagow, R.J.

1993-04-01T23:59:59.000Z

344

Synthesis of new high performance lubricants and solid lubricants  

SciTech Connect (OSTI)

Synthesis and testing was begun on a number of new classes of lubricants: perfluoropolyethers (branching effects), perfluoromethylene oxide ethers, chlorine-substituted fluorocarbon polyethers, fluorine-containing branched ether lubricants, glycerine- based perfluoropolyesters, perfluoro epoxy ether chains, etc.

Lagow, R.J.

1993-04-01T23:59:59.000Z

345

E-Print Network 3.0 - aryl bisdiazeniumdiolates potent Sample...  

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

of Hindered Alkyl-Aryl Ethers Thomas F. Woiwode... synthesis.2 Our retrosynthetic analysis of phomopsin A targeted the chiral tertiary alkyl-aryl ether... substitution (SNAr)...

346

E-Print Network 3.0 - acyl-coa esters antagonize Sample Search...  

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

B. Magnetic properties a b s t r a c t FeVinyl ester... surfactant or coupling agent. Vinyl ester monomer serves as a coupling agent with one side covalently bound Source: Guo,...

347

Gold catalysts for the hydrochlorination of acetylene.  

E-Print Network [OSTI]

??The direct, gas-phase hydrochlorination of acetylene is a method by which vinyl chloride monomer (VCM) is produced industrially. VCM is polymerised to produce poly-vinyl chloride (more)

Davies, Catherine

2013-01-01T23:59:59.000Z

348

E-Print Network 3.0 - acetate bia 2-093 Sample Search Results  

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

of PdAu(001) Bimetallic Surfaces toward Vinyl Acetate... to elucidate the mechanism of vinyl acetate (VA) synthesis on PdAu(001). Atomic geometries, activation... and acetate; -H...

349

Method of recovering uranium from aqueous solution  

SciTech Connect (OSTI)

Anion exchange resin derived from insoluble crosslinked polymers of vinyl benzyl chloride which are prepared by polymerizing vinyl benzyl chloride and a crosslinking monomer are particularly suitable in the treatment of uranium bearing leach liquors.

Albright, R.L.

1980-01-22T23:59:59.000Z

350

activity-dependent polyadenylation site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 37 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

351

alpine site jungfraujoch: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 166 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

352

allosteric site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 69 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

353

affect redd site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 62 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

354

allosteric citalopram-binding site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 69 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

355

agnostic splice site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 279 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

356

adenine dinucleotide-binding site: Topics by E-print Network  

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

commercial setting. Contaminants: Contaminants: Vinyl Chloride 43 Clinical Research Site Management Engineering Websites Summary: Clinical Research Site Management Dan...

357

Model Estimates of the Contributions of Environmental Tobacco Smoke to Volatile Organic Compound Exposures in Office Buildings  

E-Print Network [OSTI]

vinyl ketone 2,3-Butadione Acrolein Limonene 1,3-Butadieneconcentrations for for acrolein, acetaldehyde and 1,3-

Daisey, J.M.

2008-01-01T23:59:59.000Z

358

E-Print Network 3.0 - acetate phthalate film Sample Search Results  

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

insecticides... acetate, tetrahydrofuran, cyclohexanone, organic tin compounds, and vinyl chloride TeflonTM nothing... polypropylene and polyethylene plasticizers and...

359

Prototyping Process and Tools An abbreviated overview of lifecycle  

E-Print Network [OSTI]

Woomoo) · Physical objects ­ cardboard, clay, vinyl, etc. ­ 3D-printed Realistic Interaction · More

Golub, Evan

360

Chemico-Biological Interactions 166 (2007) 264276 Chemical process-based reconstruction of exposures for an  

E-Print Network [OSTI]

, the chloroprene (CD) and vinyl chloride monomer (VCM) exposures were modeled for plant specific job title classes to chloroprene (CD) and vinyl chloride monomer (VCM), the historical exposure levels were reconstructed of exposures for an epidemiological study Part II. Estimated exposures to chloroprene and vinyl chloride Nurtan

Illinois at Chicago, University of

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Environmentally-friendly organochlorine waste processing and recycling  

E-Print Network [OSTI]

vinyl chloride monomer production more efficient, and on possible ways of industrial organochlorine, and vinyl chloride monomer. Polymerization and copolymeriza- tion of typical waste with and without the C5e and polymers. ? 2013 Elsevier Ltd. All rights reserved. 1. Introduction Vinyl chloride monomer (VCM) is one

Volinsky, Alex A.

362

Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and  

E-Print Network [OSTI]

. Real-time non-invasive Raman measurement has been performed on stationary vinyl chloride monomer of vinyl chloride (S-PVC) by a free-radical mechanism consists in dispersing liquid monomer under its-decomposition of the organic initiator into the vinyl chloride monomer (VCM). As a consequence, the reaction proceeds

Mailhes, Corinne

363

IN VITRO SUSCEPTIBILITY OF CHLAMYDIA TRACHOMATIS TO LPS-BINDING POLYAMINES AND CELLULOSE ETHER POLYMERS: TOWARDS THE DEVELOPMENT OF A MICROBICIDE AGAINST CHLAMYDIA INFECTION  

E-Print Network [OSTI]

shock protein 60 (hsp60), inclusion membrane proteins such as various Inc proteins, and effector proteins of the type III secretion system (T3SS) that are secreted into host cytosol. Vaginal Microbicide Although immunization would be an ideal strategy...-negative infection can lead to septic shock [139]. LPS is also recognized for the essential roles it plays in the pathogenesis and survival of Gram-negative bacteria. LPS contributes greatly to the structural integrity and stability of the outer membrane...

Osaka, Ichie

2013-12-31T23:59:59.000Z

364

Bisphenol A Diglycidyl Ether Induces Adipogenic Differentiation of Multipotent Stromal Stem Cells through a Peroxisome Proliferator-Activated Receptor Gamma-Independent Mechanism  

E-Print Network [OSTI]

Food contamination from epoxy resins and organosols used asG. 1981. Metabolism of the epoxy resin component 2,2-bis[4-(in the manufacture of epoxy resins, paints, and as a coating

2012-01-01T23:59:59.000Z

365

Sulfobutyl Ether b-Cyclodextrin (SBE-b-CD) in Eyedrops Improves the Tolerability of a Topically Applied Pilocarpine Prodrug in Rabbits  

E-Print Network [OSTI]

,O'-dipropionyl-(1,4-xylylene) bispilocarpate, in albino rabbits were studied. Compared to the commercial pilocarpine eyedrop solution (163 mM, equivalent to 3.4% pilocarpine), 12 - 24 mM pilocarpine prodrug solutions (equivalent to 0.5 - 1.0% pilocarpine...

Stella, Valentino J.; Jä rvinen, Tomi; Jä rvinen, Kristina; Thompson, Diame; Urtti, Arto

1995-01-01T23:59:59.000Z

366

The Effect of the Di-Tertiary Butyl Peroxide (DTBP) additive on HCCI Combustion of Fuel Blends of Ethanol and Diethyl Ether  

E-Print Network [OSTI]

Charge Compression Ignition (HCCI) Engines: Key Research andJ. Girard, and R. Dibble, "HCCI in a CFR Engine: ExperimentsRyan III, and J.S. Souder, "HCCI Operation of a Dual-Fuel

Mack, John Hunter; Buchholz, Bruce A; Flowers, Daniel L; Dibble, Robert W

2005-01-01T23:59:59.000Z

367

Impacts of Ethanol on Anaerobic Production of Tert-Butyl Alcohol (TBA) from Methyl Tert-Butyl Ether (MTBE) in Groundwater  

E-Print Network [OSTI]

Project title: Impacts of Ethanol on Anaerobic Production oftert-butanol (TBA). As ethanol is being promoted as ainvestigate the effect of ethanol release on existing MTBE

Scow, K M; MacKay, Douglas

2008-01-01T23:59:59.000Z

368

Analysis of dissolved benzene plumes and methyl tertiary butyl ether (MTBE) plumes in ground water at leaking underground fuel tank (LUFT) sites  

SciTech Connect (OSTI)

The 1990 Clean Air Act Amendments mandate the addition of oxygenates to gasoline products to abate air pollution. Currently, many areas of the country utilize oxygenated or reformulated fuel containing 15- percent and I I-percent MTBE by volume, respectively. This increased use of MTBE in gasoline products has resulted in accidental point source releases of MTBE containing gasoline products to ground water. Recent studies have shown MTBE to be frequently detected in samples of shallow ground water from urban areas throughout the United States (Squillace et al., 1995). Knowledge of the subsurface fate and transport of MTBE in ground water at leaking underground fuel tank (LUFT) sites and the spatial extent of MTBE plumes is needed to address these releases. The goal of this research is to utilize data from a large number of LUFT sites to gain insights into the fate, transport, and spatial extent of MTBE plumes. Specific goals include defining the spatial configuration of dissolved MTBE plumes, evaluating plume stability or degradation over time, evaluating the impact of point source releases of MTBE to ground water, and attempting to identify the controlling factors influencing the magnitude and extent of the MTBE plumes. We are examining the relationships between dissolved TPH, BTEX, and MTBE plumes at LUFT sites using parallel approaches of best professional judgment and a computer-aided plume model fitting procedure to determine plume parameters. Here we present our initial results comparing dissolved benzene and MTBE plumes lengths, the statistical significance of these results, and configuration of benzene and MTBE plumes at individual LUFT sites.

Happel, A.M.; Rice, D. [Lawrence Livermore National Lab., CA (United States); Beckenbach, E. [California Univ., Berkeley, CA (United States); Savalin, L.; Temko, H.; Rempel, R. [California State Water Resources Control Board, Sacramento, CA (United States); Dooher, B. [California Univ., Los Angeles, CA (United States)

1996-11-01T23:59:59.000Z

369

RELATIONS BETWEEN THE DETECTION OF METHYL TERT-BUTYL ETHER (MTBE) IN SURFACE AND GROUND WATER AND ITS CONTENT IN GASOLINE  

E-Print Network [OSTI]

AND ITS CONTENT IN GASOLINE By Michael J. Moran, Mike J. Halde, Rick M. Clawges and John S. Zogorski U in the United States as an octane enhancer and oxygenate in gasoline. Octane enhancement began in the late 1970's with the phase-out of tetraethyl lead from gasoline. The use of oxygenates was expanded

370

Modeling and Optimization of Next Generation Feedstock Development for Chemical Process  

E-Print Network [OSTI]

-Glutamic acid Anaerobic digestion mass Cellulose Biogas Bio oil Gasoline Diesel Butanol Dimethyl ether

Grossmann, Ignacio E.

371

Thermoset epoxy polymers from renewable resources  

DOE Patents [OSTI]

Novel thermoset epoxy polymers using the bisglycidyl ethers of anhydrosugars, such as isosorbide, isomannide, and isoidide, are disclosed. The bisglycidyl ethers are useful as substitutes for bisphenol A in the manufacture of thermoset epoxy ethers. The anhydrosugars are derived from renewable sources and the bisglycidyl ethers are not xenoestrogenic and the thermoset curing agents are likewise derived form renewable resources.

East, Anthony (Madison, NJ); Jaffe, Michael (Maplewood, NJ); Zhang, Yi (Harrison, NJ); Catalani, Luiz H (Carapicuiba, BR)

2009-11-17T23:59:59.000Z

372

A Low-Carbon Fuel Standard for California Part 1: Technical Analysis  

E-Print Network [OSTI]

Catalysis Dimethyl Ether Flash Pyrolysis Fischer Tropschpure hydrogen fuel product. Flash pyrolysis Pyrolysis is the

2007-01-01T23:59:59.000Z

373

A Low-Carbon Fuel Standard for California, Part 1: Technical Analysis  

E-Print Network [OSTI]

Catalysis Dimethyl Ether Flash Pyrolysis Fischer Tropschpure hydrogen fuel product. Flash pyrolysis Pyrolysis is the

Farrell, Alexander; Sperling, Daniel

2007-01-01T23:59:59.000Z

374

Biofuel Boundaries: Estimating the Medium-Term Supply Potential of Domestic Biofuels  

E-Print Network [OSTI]

Catalysis Dimethyl Ether Flash Pyrolysis Fischer Tropschpure hydrogen fuel product. Flash Pyrolysis Pyrolysis is the

Jones, Andrew; O'Hare, Michael; Farrell, Alexander

2007-01-01T23:59:59.000Z

375

he U.S. Geological Survey's (USGS) National Water-Quality Assess-  

E-Print Network [OSTI]

of the wells included methyl tert-butyl ether (MTBE), tetrachloroethene (PCE), dichlorodifluoromethane, 1

376

Responsive copolymers for enhanced petroleum recovery. Second annual report  

SciTech Connect (OSTI)

The authors describe second year efforts in synthesis, characterization, and rheology to develop polymers with significantly improved efficiency in mobility control and conformance. These advanced polymer systems would maintain high viscosities or behave as virtual gels under low shear conditions and at elevated electrolyte concentrations. At high fluid shear rates, associates would deaggregate yielding low viscosity solutions, reducing problems of shear degradation or face plugging during injection. Polymeric surfactants were also developed with potential for use in higher salt, higher temperature reservoirs for mobilization of entrapped oil. Chapters include: Ampholytic terpolymers of acrylamide with sodium 3-acrylamido-3-methylbutanoate and 2-acrylamido-2-methylpropanetrimethylammonium chloride; Hydrophilic sulfobetaine copolymers of acrylamide and 3-(2-acrylamido-methylpropane-dimethylammonio)-1-propanesulfonate; Copolymerization of maleic anhydride and N-vinylformamide; Reactivity ratio of N-vinylformamide with acrylamide, sodium acrylate, and n-butyl acrylate; Effect of the distribution of the hydrophobic cationic monomer dimethyldodecyl(2-acrylamidoethyl)ammonium bromide on the solution behavior of associating acrylamide copolymers; Effect of surfactants on the solution properties of amphipathic copolymers of acrylamide and N,N-dimethyl-N-dodecyl-N-(2-acrylamidoethyl)ammonium bromide; Associative interactions and photophysical behavior of amphiphilic terpolymers prepared by modification of maleic anhydride/ethyl vinyl ether copolymers; Copolymer compositions of high-molecular-weight functional acrylamido water-soluble polymers using direct-polarization magic-angle spinning {sup 13}C NMR; Use of factorial experimental design in static and dynamic light scattering characterization of water soluble polymers; and Porous medium elongational rheometer studies of NaAMB/AM copolymer solutions.

McCormick, C.; Hester, R.

1995-05-01T23:59:59.000Z

377

Validation of a personal sampling method for 2-ethylhexyl acrylate  

E-Print Network [OSTI]

in copolymer applications. Copolymers with low priced, hard monomers such as vinyl acetat, e, vinyl chloride, methyl methacrylate, and acrylonitrile are used to produce commercial paint latexes, paper and paper board coatings, nonwoven fabric adhesives... present a significant toxicological hazard. The chemical and physi- cal properties of EHA are presented in Table l. Uses of EHA The acrylic monomer esters are versatile raw materials. They 5 have both vinyl and ester functionality and are useful...

Albert, David Lynn

2012-06-07T23:59:59.000Z

378

Sustainable syntrophic growth of Dehalococcoides ethenogenes strain 195 with Desulfovibrio vulgaris Hildenborough and Methanobacterium congolense: Global transcriptomic and proteomic analyses  

E-Print Network [OSTI]

2005). Genome sequence of the PCE-dechlorinating bacteriumHong Kong. chloroethene (PCE) and trichloroethene (TCE) toexperimental co-culture, PCE was dechlorinated to vinyl

Men, Y.

2012-01-01T23:59:59.000Z

379

JOURNAL OF BACTERIOLOGY, Aug. 2009, p. 52245231 Vol. 191, No. 16 0021-9193/09/$08.00 0 doi:10.1128/JB.00085-09  

E-Print Network [OSTI]

in Clostridium kluyveri. Chlorinated organic compounds, such as tetrachloroethene (PCE) and trichloroethene (TCE reductively dechlorinate PCE, TCE, and their daughter compounds di- chloroethene (DCE) and vinyl chloride (VC

Alvarez-Cohen, Lisa

380

The Dalhousie Employee Guide to Materials Management on Campus Look for the 4 system bins around campus designated for recyclables, paper/cardboard, organics and garbage.  

E-Print Network [OSTI]

cans Tetra juice packs & mini sips All plastic bags and containers, except Styrofoam Clean aluminum Clean & painted wood Drywall & ceiling tiles Vinyl Plastic Glass Insulation Styro Tar Gravel

Brownstone, Rob

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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
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381

Techniques and Technologies for Field Detection of Asbestos Containing Materials  

Broader source: Energy.gov [DOE]

Asbestos has been used in numerous applications at DOE sites including sprayed-on fireproofing, asphalt and vinyl floor tile, and asbestos-cement(transite) siding.

382

E-Print Network 3.0 - a-007 topical gel Sample Search Results  

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

and poly(vinyl alcohol) (PVA) gel Switching... , copoly(AamvdMG) gel and electrochromic polymer, ProDOT-(CH3) Development of Durable Coating Systems Source: Taya,...

383

High temperature, optically transparent plastics from biomass  

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

temperature, optically transparent plastics from biomass At a Glance Rapid, selective catalytic system to produce vinyl plastics from renewable biomass Stereoregular...

384

E-Print Network 3.0 - asymmetric hetero-diels-alder reactions...  

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

Correction Paper No. b927076k Summary: . The classic hetero-Diels Alder reaction of acrolein with methyl vinyl ketone (Scheme 3) was examined in great... is unsymmetrically...

385

acetal benzoic acids: Topics by E-print Network  

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

blend. Inthe present investigation, densities and viscosities have been measured in 4 % solution of polyAcrylic Acid and Poly vinyl Acetate in DMSO using calculated and reduced...

386

Novel mixed organoboranes for the reductive alkylation of p-benzoquinone  

E-Print Network [OSTI]

with methyl vinyl ketone or acrolein 20 was found to beWhen this is reacted with acrolein, 15% of the product is 4-

Hincapi, Gloria

2011-01-01T23:59:59.000Z

387

Modeling an EDC Cracker using Computational Fluid Dynamics (CFD).  

E-Print Network [OSTI]

?? The process used by the Norwegian company Hydro for making Vinyl Chloride Monomer (VCM) from natural gas and sodium chloride has been studied. A (more)

Kaggerud, Torbjrn Herder

2007-01-01T23:59:59.000Z

388

E-Print Network 3.0 - acid derivatives sorbtsionnye Sample Search...  

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

Aliphatic Tertiary Amines. Summary: , 6 due to increased demands for derivatives like vinyl acetate monomer (VAM). Currently, acetic acid... CHAPTER 6 Acetic Acid Recovery from...

389

E-Print Network 3.0 - anionic linear-globular dendrimer-cis-platinum...  

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

Science 47 Computational Study of 10-X-2 Ate Complexes Derived from Vinyllithiums and Vinyl Halides Summary: complexes, and removal of the formally cationic lithium from the...

390

E-Print Network 3.0 - acrylic acid synthesized Sample Search...  

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

peracetic acid in an overnight... % trifluoroacetic acid (TFA) solution in methylene chloride, allowing for high conversion to the final vinyl product Source: Harth, Eva M. -...

391

E-Print Network 3.0 - aspect ratio domains Sample Search Results  

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

University of California, Irvine Collection: Mathematics 73 Weld line strength of poly(vinyl chloride)polyethylene blends , J.W. Summersb Summary: Image Analysis System. The...

392

E-Print Network 3.0 - anions Sample Search Results  

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

Science 45 Computational Study of 10-X-2 Ate Complexes Derived from Vinyllithiums and Vinyl Halides Summary: complexes, and removal of the formally cationic lithium from the...

393

E-Print Network 3.0 - acid bilayers observed Sample Search Results  

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

of Docosahexaenoic Acid-Containing Phospholipid Bilayers as Studied by 2H NMR... of vinyl perdeuterated arachidonic acid chains in bilayers of 1-palmitoyl-2-vinylperdeuterioara...

394

E-Print Network 3.0 - anacardic acid derivatives Sample Search...  

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

Aliphatic Tertiary Amines. Summary: , 6 due to increased demands for derivatives like vinyl acetate monomer (VAM). Currently, acetic acid... CHAPTER 6 Acetic Acid Recovery from...

395

E-Print Network 3.0 - active polymeric functional Sample Search...  

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

Collection: Biology and Medicine ; Environmental Sciences and Ecology 39 Poly(vinyl chloride) (PVC) is one of the most successful modern synthetic materials. Because of its...

396

E-Print Network 3.0 - acid derivative hs-1200-induced Sample...  

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

Aliphatic Tertiary Amines. Summary: , 6 due to increased demands for derivatives like vinyl acetate monomer (VAM). Currently, acetic acid... CHAPTER 6 Acetic Acid Recovery from...

397

E-Print Network 3.0 - aqueous sodium dodecyl Sample Search Results  

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

of Sodium Dodecyl Sulfate and Sodium Dodecyl Benzenesulfonate on Poly(Vinyl Chloride) Latexes Summary: 1 Adsorption of Sodium Dodecyl Sulfate and Sodium Dodecyl...

398

E-Print Network 3.0 - aqueous ki hio3 Sample Search Results  

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

Biology and Medicine 86 Utilization of Fluoroethene as a Surrogate for Aerobic Vinyl Chloride Summary: ) is a stable molecule in aqueous solution and its aerobic...

399

E-Print Network 3.0 - acrylic acid moieties Sample Search Results  

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

at Austin Collection: Biology and Medicine ; Materials Science 7 Poly(acrylic acid)Poly(vinyl alcohol) Copolymers with Superabsorbent Properties Summary: Poly(acrylic...

400

E-Print Network 3.0 - alternating romp aromp Sample Search Results  

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

introduced enough variation in the meth- ylene sequence length that model... (vinyl chloride) (PVC); ethylene copolymers; ROMP INTRODUCTION The development of metallocene and...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

E-Print Network 3.0 - acid dehalogenase enzyme Sample Search...  

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

of halorespi- ration in Desulfitobacterium dehalogenans. J. Biol. Chem... of vinyl chloride (VC) to ethene. Degenerate primers targeting conserved regions in reductive...

402

E-Print Network 3.0 - acid-based supramolecular structure Sample...  

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

Supramolecular Thin Films as a Nanotemplate... of Structural Defects in Poly(vinyl chloride) Jindra Purmova, Kim F. D. Pauwels, Wendy van Zoelen, ... Source: Groningen,...

403

E-Print Network 3.0 - anions organic acids Sample Search Results  

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

is determined by the acidity of the reaction intermediate, vinyldiazomethane. Thus, the vinyl- diazomethyl anion... Structure of the Vinyldiazomethyl Anion and Energetic Comparison...

404

E-Print Network 3.0 - aqueous solutions gels Sample Search Results  

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

Group Collection: Physics 47 Mechanistic analysis of protein delivery from porous poly(vinyl alcohol) systems Summary: by freezing and thawing of aqueous PVA solutions, while...

405

E-Print Network 3.0 - anomalous bcd mrk Sample Search Results  

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

of peracetylated b-Cyclodextrin (perBCD) on the suspension... polymerization of vinyl chloride was studied. Addition of perBCD resulted in larger particles with broader......

406

E-Print Network 3.0 - alkyl benzenesulfonates Sample Search Results  

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

7 Adsorption of Sodium Dodecyl Sulfate and Sodium Dodecyl Benzenesulfonate on Poly(Vinyl Chloride) Latexes Summary: 1 Adsorption of Sodium Dodecyl Sulfate and Sodium Dodecyl...

407

E-Print Network 3.0 - acetate allyl alcohol Sample Search Results  

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

of the acetate protecting group afforded alcohol 17, which... , a stereoselective vinyl addition remained elusive. The allylic ... Source: Crimmins, Michael T.- Department of...

408

Specimen-Specific Method for Quantifying Glenohumeral Joint Kinematics  

E-Print Network [OSTI]

poly- vinyl chloride (PVC) cylinder using screws and plasteraxial center line of the PVC pipe was matched to thewas determined with two PVC cylinder circumferences formed

Lee, Yeon Soo; Lee, Thay Q.

2010-01-01T23:59:59.000Z

409

aldosterone modulates cell: Topics by E-print Network  

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

Renewable Energy Websites Summary: the benefit of using optically superior silicone encapsulant materials over the incumbent ethylene vinyl in the UV region of the solar...

410

() Trichloromethane ()1,1,2,2-1,1,2,2-Tetrachloroethane  

E-Print Network [OSTI]

acetate () Ethylene glycol monobutyl ether () Ethylene glycol monomethy ether ()- O-dichlorobenzene ( ) Xylenes(o-,m-,p- isomers) () Cresol - 19 - #12;() Chlorobenzene () Amyl acetate () Isoamyl acetate () Isobutyl acetate () Isopropyl acetate () Ethyl acetate () Propyl acetate () Butyl acetate () Methyl acetate

Huang, Haimei

411

PREPRINT  

Office of Scientific and Technical Information (OSTI)

dried before using by dissolving in a minimum amount of ether, drying over anhydrous magnesium sulfate, and removing the ether under vacuum. This material is >95% pure and may be...

412

The Scientific Basis for the Regulation of Nanoparticles: Challenging Paracelsus and Pare  

E-Print Network [OSTI]

NANOTECHNOILOGY 402 (2007). 20. MTBE unquestionably causesTertiary-Butyl Ether (MTBE)-a Gasoline Additive-CausesMethyl Tertiary-butyl Ether (MTBE) in CD-I Mice and F-344

Goldstein, Bernard D.

2010-01-01T23:59:59.000Z

413

Pyrolysis of Organic Molecules Relevant to Combustion as Monitored by Photoionization Time-of-Flight Mass Spectrometry  

E-Print Network [OSTI]

is observed, which is similar to MTBE in this system whichisobutene formed from MTBE, is found to occur. REFERENCES [methyl tert-butyl ether (MTBE) and tert-amyl methyl ether (

Weber, Kevin Howard

2010-01-01T23:59:59.000Z

414

QUANTIFYING NON-POINT SOURCES OF VOLATILE ORGANIC COMPOUNDS IN STORMWATER FROM A PARKING LOT  

E-Print Network [OSTI]

-butyl ether (MTBE) on urban particles indicates a site- specific interaction between MTBE and a particulate is a possible source only for the gasoline oxygenate methyl tert-butyl ether (MTBE). Lopes and Bender (1998

415

Life-cycle Environmental Inventory of Passenger Transportation in the United States  

E-Print Network [OSTI]

Methyltert?ButylEther(MTBE);http://www.atsdr.cdc.gov/MethylTertiaryButyl Ether (MTBE), which was easilyaccountingwasnotperformedonMTBEandtheresult of

Chester, Mikhail V

2008-01-01T23:59:59.000Z

416

Characterization of trace gases measured over Alberta oil sands mining operations: 76 speciated C2-C10volatile organic compounds (VOCs), CO2, CH4, CO, NO, NO2, NOy, O3and SO2  

E-Print Network [OSTI]

K. : Atmospheric chemistry of gasoline-related emissions:chemistry. Methyl tert-butyl ether is a solvent and gasoline

2010-01-01T23:59:59.000Z

417

Performance and Emissions of a Second Generation Biofuel -DME  

E-Print Network [OSTI]

, and end use GHG emissions. KEY: DME dimethyl ether; MeOH methanol; CNG compressed natural gas; RME

Minnesota, University of

418

Dispersed Polyphosphate in Fungal Vacuoles in Eucalyptus pilularis/Pisolithus tinctorius  

E-Print Network [OSTI]

. Stained sections of ether­acrolein freeze-substituted mycorrhizas also showed only dis- persed material

Vesk, Peter

419

MTBE Production Economics (Released in the STEO April 2001)  

Reports and Publications (EIA)

The purpose of this analysis is to evaluate the causes of methyl tertiary butyl ether (MTBE) price increases in 2000.

2001-01-01T23:59:59.000Z

420

Handbook of Applied Cryptography  

E-Print Network [OSTI]

more and more on our ability to let such ethereal carrier pigeons mediate at a distance what we used to

Alfred J. Menezes; Paul C. Van Oorschot; Scott A. Vanstone; R. L. Rivest

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Vol. 83, No. 2, 2006 121 Analysis of Heat Transfer Fouling by Dry-Grind Maize Thin Stillage  

E-Print Network [OSTI]

-tertiary butyl ether (MTBE), a petroleum derivative, and ethanol. In recent years, MTBE has been phased out due

422

Effect of Carcass Grades and Fatness on Tenderness of Meat from Steers of Known History.  

E-Print Network [OSTI]

percent separ- ? fat (Figure 19) and higher ether extract I -!nure 20). But some animals with less I, ~blil~g (as low as 3.8 percent ether extract) -1- Ire as tender as the one with the most marbling 1 '1.4 percent ether extract). -' The tati...

King, G. T.; Butler, O. D.; Cover, Sylvia

1958-01-01T23:59:59.000Z

423

Effects of oxygenate concentration on species mole fractions in premixed n-heptane flames  

E-Print Network [OSTI]

-heptane/oxygenate mixtures were 2.7 and 3.4. Three different fuel oxygenates (i.e. MTBE, methanol, and ethanol) were tested tertiary-butyl ether (MTBE), ethyl tertiary-butyl ether (ETBE), and tertiary amyl methyl ether (TAME)) were considered as possible fuel oxygenates. MTBE and ethanol are the most common oxygenates currently used

Senkan, Selim M.

424

Health risks associated with exposure to gasoline additives-methyl tertiary butyl ether [MTBE]. Hearing before a Subcommittee of the Committee on Appropriations, United States Senate, One Hundred Third Congress, First Session, Special Hearing  

SciTech Connect (OSTI)

This hearing focuses on an Alaskan study by the Centers for Disease Control which examines possible health risks associated with exposure to gasoline additive know as MTBE. Testimony is given by Dr. William Roper, Director, CDC.

Not Available

1993-01-01T23:59:59.000Z

425

Epoxy Resin-Photopolymer Composites for Volume Timothy J. Trentler, Joel E. Boyd, and Vicki L. Colvin*  

E-Print Network [OSTI]

Epoxy Resin-Photopolymer Composites for Volume Holography Timothy J. Trentler, Joel E. Boyd by mixing photopo- lymerizable vinyl monomers with a liquid epoxy resin and an amine hardener. A solid matrix is formed in situ as the epoxy cures at room temperature. The unreacted vinyl monomers

426

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 0099-2240/98/$04.00 0  

E-Print Network [OSTI]

Acceptors for Anaerobic Microbial Oxidation of Vinyl Chloride and Dichloroethene PAUL M. BRADLEY,1 * FRANCIS Received 24 March 1998/Accepted 4 June 1998 Anaerobic oxidation of [1,2-14 C]vinyl chloride and [1,2-14 C. The chlorinated solvents tetrachloroethene (PCE) and tri- chloroethene (TCE) are common groundwater contaminants

Lovley, Derek

427

AIAA-2000-0057 This work was supported by Sandia National Laboratories under  

E-Print Network [OSTI]

ABSTRACT The DOE/MSU Fatigue Database has been expanded Delamination is a dominant failure mode purpose polyesters, vinyl esters, and epoxies) used in characteristics (all materials were prepared unsaturated delamination resistance of most blade materials is polyesters, vinyl esters, epoxies

428

Appendix A: The Names of Polymers and Polymeric  

E-Print Network [OSTI]

or methylpentene polymethylpentene vinyl chloride poly(vinyl chloride) co-aminocaproic poly(co-aminocaproic acid MATERIALS For homopolymers Monomer name Polymer name X polyX XY poiy(XY) for example ethylene polyethylene acid) [nylon 6] Where the monomer name consists of two words, it should be bracketed in the polymer

Hall, Christopher

429

Graphene Quantum Dots Embedded in a Polymer Film S. Ushiba1,2, X. He2, E. Haroz2, J. Peng3, P. M. Ajayan3 and J. Kono2  

E-Print Network [OSTI]

-polymer composite film by drying a mixture solution of GQD and poly-vinyl alcohol (PVA). GQDs were homogeneously-polymer composite. Here we demonstrate the composite film by drying a mixture solution of GQD and poly-vinyl alcohol Photoluminescence of GQDs Daylight UV light GQDs in water The absorbance peak at 310 nm is a feature of GQDs due

Mellor-Crummey, John

430

Composition and process for separating cesium ions from an acidic aqueous solution also containing other ions  

DOE Patents [OSTI]

A crown ether cesium ion extractant is disclosed as is its synthesis. The crown ether cesium ion extractant is useful for the selective purification of cesium ions from aqueous acidic media, and more particularly useful for the isolation of radioactive cesium-137 from nuclear waste streams. Processes for isolating cesium ions from aqueous acidic media using the crown ether cesium extractant are disclosed as are processes for recycling the crown ether cesium extractant and processes for recovering cesium from a crown ether cesium extractant solution.

Dietz, Mark L. (Elmhurst, IL); Horwitz, E. Philip (Naperville, IL); Bartsch, Richard A. (Lubbock, TX); Barrans, Jr., Richard E. (Downers Grove, IL); Rausch, David (Naperville, IL)

1999-01-01T23:59:59.000Z

431

Composition and process for separating cesium ions from an acidic aqueous solution also containing other ions  

DOE Patents [OSTI]

A crown ether cesium ion extractant is disclosed as is its synthesis. The crown ether cesium ion extractant is useful for the selective purification of cesium ions from aqueous acidic media, and more particularly useful for the isolation of radioactive cesium-137 from nuclear waste streams. Processes for isolating cesium ions from aqueous acidic media using the crown ether cesium extractant are disclosed as are processes for recycling the crown ether cesium extractant and processes for recovering cesium from a crown ether cesium extractant solution. 4 figs.

Dietz, M.L.; Horwitz, E.P.; Bartsch, R.A.; Barrans, R.E. Jr.; Rausch, D.

1999-03-30T23:59:59.000Z

432

Characterization of Arsenic Contamination on Rust from Ton Containers  

SciTech Connect (OSTI)

The speciation and spatial distribution of arsenic on rusted steel surfaces affects both measurement and removal approaches. The chemistry of arsenic residing in the rust of ton containers that held the chemical warfare agents bis(2-chloroethyl)sulfide (sulfur mustard) and 2-chlorovinyldichloroarsine (Lewisite) is of particular interest, because while the agents have been decontaminated, residual arsenic could pose a health or environmental risk. The chemistry and distribution of arsenic in rust samples was probed using imaging secondary ion mass spectrometry (SIMS), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy, and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX). Arsenic in the +3 and or +5 oxidation state is homogeneously distributed at the very top-most layer of the rust samples, and is intimately associated with iron. Sputter depth profiling followed by SIMS and XPS shows As at a depth of several nm, in some cases in a reduced form. The SEM/EDX experiments show that As is present at a depth of several microns, but is inhomogeneously distributed; most locations contained oxidized As at concentrations of a few percent, however several locations showed very high As in a metallic form. These results indicate that the rust material must be removed if the steel containers are to be cleared of arsenic.

Gary S. Groenewold; Recep Avci; Robert V. Fox; Muhammedin Deliorman; Jayson Suo; Laura Kellerman

2013-01-01T23:59:59.000Z

433

Effect in the KHT sarcoma of CCNU and MISO on cell cycle progression evaluated by flow-cytometry  

SciTech Connect (OSTI)

Previous studies using the KHT sarcoma have shown that misonidazole (MISO) enhances the cytotoxicity of 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) by as much as a factor of 2.0. In the present study flow cytometry was used to monitor the changing DNA distributions of cells dissociated from solid tumors at successive times following treatment with CCNU, applied either alone or in combination with 0.5 mg/g MISO. The proportion of cells in late S and the G/sub 2/M phases of the cell cycle increased gradually after CCNU treatment. MISO did not significantly change this block in cell progression, which persisted for at least 48 hr after treatment in all cases. CCNU shows marked carbamoylating activity, which has been associated with inhibition of RNA processing and with the degree of chemopotentiation achieved with MISO. By 24 hr after treatment, CCNU clearly altered the distribution of RNA, but no significant differences could be detected between results obtained from drug and drug plus sensitizer treated groups. These studies demonstrate the effect of CCNU on cell cycle progression in vivo. The addition of MISO did not result in further perturbation of the total tumor population, suggesting that cell cycle redistribution does not play a major role in chemopotentiation by MISO.

Hill, S.A.; Bauer, K.D.; Keng, P.C.; Siemann, D.W.

1984-09-01T23:59:59.000Z

434

Survival in subpopulations of cells derived from solid KHT sarcomas by centrifugal elutriation following treatment with CCNU and MISO  

SciTech Connect (OSTI)

Misonidazole (MISO) has been shown to enhance the cytotoxicity of 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) in a number of different animal tumor systems. The authors have investigated the response to therapy of the various subpopulations of cells comprising the KHT sarcoma, to determine whether chemopotentiation occurred as a preferential enhancement of killing in one subpopulation of cells. Twenty-four hr after drug treatment, cells dissociated from solid tumors were separated into homogeneous populations based on cell size by the technique of centrifugal elutriation. Clonogenic cell survival was measured for each elutriated fraction. In vivo treatment with MISO produced no measurable cell-kill across the cell cycle. Those cells in late G/sub 1/ and S phase 24 hr after treatment were most sensitive to CCNU alone. The enhancement of CCNU cytotoxicity by MISO occurred primarily in the early G/sub 1/ and S fractions. These data suggest that chemopotentiation does not occur equally in all tumor cell subpopulations and that some specificity of enhanced cell killing exists.

Hill, S.A.; Keng, P.C.; Siemann, D.W.

1984-09-01T23:59:59.000Z

435

Enhanced tumor responses through therapies combining CCNU, MISO and radiation  

SciTech Connect (OSTI)

Studies were performed to determine whether the radiation sensitizer misonidazole (MISO) could enhance the tumor control probability in a treatment strategy combining radiation and the nitrosourea 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU). In initial experiments KHT sarcoma-bearing mice were injected with 1.0 mg/g of MISO simultaneously with a 20 mg/kg dose of CCNU 30-40 min prior to irradiation (1500 rad). With this treatment protocol approximately 60% of the mice were found to be tumor-free 100 days post treatment. By comparison all 2 agent combinations led to 0% cures. To evaluate the relative importance of chemopotentiation versus radiosensitization in the 3 agent protocol, tumors were treated with MISO plus one anti-tumor agent (either radiation of CCNU) and then at times ranging from 0 to 24 hr later exposed to the other agent. When the time between treatments was 0 to 6 hr, a 60 to 80% tumor control rate was achieved for both MISO plus radiation followed by CCNU and MISO plus CCNU followed by radiation. However if the time interval was increased to 18 or 24 hr, the cure rate in the former treatment regimen dropped to 10% while that of the latter remained high at 40%. The data therefore indicate that (1) improved tumor responses may be achieved when MISO is added to a radiation-chemotherapy combination and (2) MISO may be more effective in such a protocol when utilized as a chemopotentiator.

Siemann, D.W.; Hill, S.A.

1984-09-01T23:59:59.000Z

436

Next Generation Non-particulate Dry Nonwoven Pad for Chemical Warfare Agent Decontamination  

SciTech Connect (OSTI)

New, non-particulate decontamination materials promise to reduce both military and civilian casualties by enabling individuals to decontaminate themselves and their equipment within minutes of exposure to chemical warfare agents or other toxic materials. One of the most promising new materials has been developed using a needlepunching nonwoven process to construct a novel and non-particulate composite fabric of multiple layers, including an inner layer of activated carbon fabric, which is well-suited for the decontamination of both personnel and equipment. This paper describes the development of a composite nonwoven pad and compares efficacy test results for this pad with results from testing other decontamination systems. The efficacy of the dry nonwoven fabric pad was demonstrated specifically for decontamination of the chemical warfare blister agent bis(2-chloroethyl)sulfide (H or sulfur mustard). GC/MS results indicate that the composite fabric was capable of significantly reducing the vapor hazard from mustard liquid absorbed into the nonwoven dry fabric pad. The mustard adsorption efficiency of the nonwoven pad was significantly higher than particulate activated carbon (p=0.041) and was similar to the currently fielded US military M291 kit (p=0.952). The nonwoven pad has several advantages over other materials, especially its non-particulate, yet flexible, construction. This composite fabric was also shown to be chemically compatible with potential toxic and hazardous liquids, which span a range of hydrophilic and hydrophobic chemicals, including a concentrated acid, an organic solvent and a mild oxidant, bleach.

Ramkumar, S S; Love, A; Sata, U R; Koester, C J; Smith, W J; Keating, G A; Hobbs, L; Cox, S B; Lagna, W M; Kendall, R J

2008-05-01T23:59:59.000Z

437

Race to license new MTBE and TAME routes heats up  

SciTech Connect (OSTI)

With refineries and petrochemical manufacturers continuing to gear up production of oxygenates for use in reformulated fuels, new routes to methyl tert-butyl ether (MTBE) and tert-amyl methyl ether (TAME) are clearly hot items in the licensing market. And probably nowhere has the competition become as intense as in offerings for skeletal isomerization technologies to boost ethers production from fluid catalytic cracking and steam cracking.

Rotman, D.

1993-01-06T23:59:59.000Z

438

The Composition and Utilization of Texas Feeding Stuffs.  

E-Print Network [OSTI]

referred to as fats and oils, and this is substantially correct for concentrated feeding stuffs, such as cottonseed meal, corn, rice bran, etc. Although some other substances are present, the ether extract in these feeds is composed mainly of fats... and oils. The ether extracts of hays and fodders, however, contain large proportions of waxes, coloring matters, and other substances (23, 24), so that it is not strictly correct to apply the names fats and oils to the ether extract of these roughages...

Fraps, G. S. (George Stronach)

1932-01-01T23:59:59.000Z

439

Aza compounds as anion receptors  

DOE Patents [OSTI]

A family of aza-ether based compounds including linear, multi-branched and aza-crown ethers is provided. When added to non-aqueous battery electrolytes, the family of aza-ether based compounds acts as neutral receptors to complex the anion moiety of the electrolyte salt thereby increasing the conductivity and the transference number of Li{sup +} ion in alkali metal batteries. 3 figs.

Lee, H.S.; Yang, X.Q.; McBreen, J.

1998-01-06T23:59:59.000Z

440

Water Quality  

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

which can lead to public health problems. * MtBE (Methyl tert Butyl Ether), a gasoline additive, has begun to contaminate ground water supplies. * Similarly, perchlorate has...

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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 - asymmetric dimethyl arginine-dimethylarginine...  

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

methyl acetate is selectively produced by reaction of dimethyl ether with carbon monoxide... .; "Superacid-Catalyzed Carbonylation of Methane, Methyl Halides, Methyl Alcohol,...

442

E-Print Network 3.0 - acoustic wave vapor Sample Search Results  

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

(6). While previous systems have demonstrated success in chemical... striking visual identification of a range of ligating vapors (including alcohols, amines, ethers... ,...

443

E-Print Network 3.0 - allyl methacrylate styrene Sample Search...  

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

Tetrachloroethylene () Cyclohexanol () Cyclohexanone ()1- 1-Butyl alcohol ()2... ;() Acrolein () Acrylic acid () Allyl zlcohol () Allyl chloride () Allyl glycidyl ether(AGE) ()2-...

444

E-Print Network 3.0 - asymmetric dimethylarginine adma Sample...  

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

with ethene. The substrates used in this study include AEE (Allyl Ethyl Ether), ADMA (Acrolein... which mechanism is operative in this case. 3.4. Functional monomer - allyl...

445

Observation of green emission from Ce3+ doped gadolinium oxide...  

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

freshly-prepared Gd2O3 undoped nanoparticles which is attributed to the stabilizer, polyethylene glycol biscarboxymethyl ether. Upon aging, the undoped particles show similar...

446

Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation  

E-Print Network [OSTI]

comparative analysis of biodiesel and FT diesel. Energy and5.9 Schematic flow diagram for biodiesel production fromGas (LPG), ethanol, biodiesel, hydrogen, Dimethyl Ether (

Lu, Xiaoming

2012-01-01T23:59:59.000Z

447

Functionalization of metal-organic frameworks with metalloligands and postsynthetic modification  

E-Print Network [OSTI]

spectrometry ix Et 2 O Diethyl ether EtOH Ethanol ee Enantiomeric excess FT-IR Fourier transform infrared spectroscopy Gamma

Garibay, Sergio J.

2011-01-01T23:59:59.000Z

448

Peroxisome proliferator-activated receptor gamma modulation and lipogenic response in adipocytes of small-for-gestational age offspring  

E-Print Network [OSTI]

gamma; BADGE: Bisphenol-A diglycidyl ether; TZD: Thiazolidinedione; ORO: Oil Red O; GC/MS: Gas chromatography/mass spectrometry;

2012-01-01T23:59:59.000Z

449

E-Print Network 3.0 - acrylonitrile stanniciv tungstate Sample...  

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

Collection: Materials Science 33 Section B -5 UNO WASTE REQUIRING SPECIAL PROCESSING Summary: Acrylamide Acrylic Acid Acrylonitrile Allyl ethyl ether Allyl phenyl...

450

The enantioselective total synthesis of (+)-Symbioimine  

E-Print Network [OSTI]

producing ethyl sulfide 45, followed by CSA-catalyzed silyl-ether methanolysis and acetal formation, and PPTS-catalyzed condensation/elimination of methanol

Born, Stephen Christopher

2009-01-01T23:59:59.000Z

451

E-Print Network 3.0 - archaeon sulfolobus acidocaldarius Sample...  

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

The archaeon Pyrococcus furiosus Summary: fused with liposomes made from tetra-ether lipids isolated from Sulfolobus acidocaldarius. Unfortunately... Chapter 6 1 Summary and...

452

DOE/LX/07-0289&D1 Secondary Document DMSA C-335-05 Solid Waste...  

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

discovered RCRA regulated hazardous waste formerly stored included two 1-inch incandescent light bulbs and an aerosol can of starter fluid (ether). Newly generated RCRA...

453

Multiple Objective Stormwater Management For the Coliseum Complex  

E-Print Network [OSTI]

methyl tertiary butyl ether (MTBE) remain in the soil around5.2 ppb xylenes, and 160 ppb MTBE remain in the groundwater

Jones, Jesse; Kraai, Rachel

2009-01-01T23:59:59.000Z

454

Stratospheric ozone, global warming, and the principle of unintended consequences - an ongoing science and policy story  

E-Print Network [OSTI]

as methyl-tert-butyl ether (MTBE), lubricating oil and itsthe environment. Use of the MTBE additive in gasoline wasof gasoline laced with MTBE into groundwater resulted in

2013-01-01T23:59:59.000Z

455

The Drinking Water Security and Safety Amendments of 2002: Is America's Drinking Water Infrastructure Safer Four Years Later?  

E-Print Network [OSTI]

355 tertiary butyl ether ("MTBE"). 43 8 Amazingly, even "[c]Water: Study Estimates Cost of MTBE Remedia- tion At Up to $

Shermer, Steven D.

2006-01-01T23:59:59.000Z

456

Oxygenates du`jour...MTBE? Ethanol? ETBE?  

SciTech Connect (OSTI)

There are many different liquids that contain oxygen which could be blended into gasoline. The ones that have been tried and make the most sense are in the alcohol (R-OH) and ether (R-O-R) chemical family. The alcohols considered are: methanol (MeOH), ethanol (EtOH), tertiary butyl alcohol (TBA). The ethers are: methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME), tertiary amyl ethyl ether (TAEE), di-isopropyl ether (DIPE). Of the eight oxygenates listed above, the author describes the five that are still waiting for widespread marketing acceptance (methanol, TBA, TAME, TAEE, and DIPE). He then discusses the two most widely used oxygenates in the US, MTBE and ethanol, along with the up-and-coming ethanol ether, ETBE. Selected physical properties for all of these oxygenates can be found in Table 2 at the end of this paper. A figure shows a simplified alcohol/ether production flow chart for the oxygenates listed above and how they are interrelated.

Wolfe, R.

1995-12-31T23:59:59.000Z

457

Agricultural and Resource Economics Update  

E-Print Network [OSTI]

tertiary butyl ether (MTBE), a natural-gas derivative, werebattle between advocates for ethanol and those for MTBE.MTBE became the dominant additive because it was less

Smith, Aaron; Zilberman, David; Saitone, Tina; Sexton, Richard J.

2012-01-01T23:59:59.000Z

458

Comparison of SPME headspace analysis to U.S. EPA method5030/8260B for MTBE monitoring  

SciTech Connect (OSTI)

A novel method for analysis of methyl tert-butyl ether andtert-butyl alcohol using solid phase microextraction is described andcompared to a standard method.

Stringfellow, William T.; Oh, Kuen-Chan

2005-02-01T23:59:59.000Z

459

Biomass burning and urban air pollution over the Central Mexican Plateau  

E-Print Network [OSTI]

the urban tracers (e.g. C 2 H 2 , MTBE, toluene) are highlymethyl tert-butyl ether (MTBE) because their shorter atmo-

2009-01-01T23:59:59.000Z

460

Effects of water chemistry on NF/RO membrane structure and performance  

E-Print Network [OSTI]

methyl tert-butyl ether (MTBE), benzene, ethylbenzene,TCE** Industrial C 2 HCl 3 MTBE** [48] Industrial C 5 H 12 O

Mo, Yibing

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

Energy Efficiency Improvement and Cost Saving Opportunities for the Petrochemical Industry - An ENERGY STAR(R) Guide for Energy and Plant Managers  

E-Print Network [OSTI]

Ethylene dichloride 1 MTBE 2 Vinylchloride 3 Ethylbenzene 1Methyl- Tertiary-Butyl-Ether (MTBE) or Ethyl-Tertiary-Butyl-Styrene Vinylchloride MTBE Benzene, Toluene, Xylene Acetone

Neelis, Maarten

2008-01-01T23:59:59.000Z

462

Cometabolic bioremediation  

E-Print Network [OSTI]

Intrinsic bioremediation of MTBE-contaminated groundwater atcontaminants, e.g. PCE, TCE, MTBE, TNT, dioxane, atrazine,Methyl tert-butyl ether (MTBE) has also been remediated

Hazen, Terry C.

2010-01-01T23:59:59.000Z

463

First Annual U.S. Department of Energy Office of Science Joint Genome Institute User Meeting  

E-Print Network [OSTI]

Genome Analysis of MTBE-Degrading Beta- Proteobacteriummethyl tert- butyl ether (MTBE). Strain PM1 can alsooften co-contaminants with MTBE in groundwater, including

Various

2006-01-01T23:59:59.000Z

464

Polyol-Based Rigid Urethane Foam Systems Kansas City Division  

Office of Scientific and Technical Information (OSTI)

of the ester and ether linkages in the polyols is presented. A discussion of test results a s they relate to the presence MATERIALS DESCRIPTION Polymeric Components The...

465

The Action of Certain Acid Reagents on the Substituted Ureas  

E-Print Network [OSTI]

aniline and methyl phenyl urea chloride with pyridine - 6 Di-phenyl ethyl thio urea and phosgene with pyridine 7 Para mono brom di-phenyl thio urea and methyl phenyl urea chloride - 8 Di-phenyl thio urea and chlor formic ethyl ester with pyridine 9... Methyl ether of di-phenyl thio urea and methyl phenyl urea chloride with pyridine - - 10 Ethyl ether of ortho di-tolyl thio urea and methyl phenyl urea chloride 13 Ethyl ether of ortho di-tolyl thio urea and di-phenyl urea chloride 14 Methyl ether...

Brewster, Ray Q.

1915-01-01T23:59:59.000Z

466

Mohamed, Tarek Said. Fabrication and Behavior of Three-Dimensionally Woven Glass Fiber Reinforced Polymeric Bridge Deck. (Under the direction  

E-Print Network [OSTI]

deck. The use of epoxy resin versus vinyl ester resin in the fabrication process was examined a textile machine and resin infusion process. The research investigated the mechanical properties of 3-D

467

ambipolar nanotube field: Topics by E-print Network  

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

in All-Carbon-Nanotube Field-Effect Transistors by Poly(Vinyl Alcohol) Coating Materials Science Websites Summary: Ambipolar Behavior in All-Carbon-Nanotube Field-Effect...

468

GENERAL SUPPLIES Required Optional  

E-Print Network [OSTI]

HB H F 2H 3H Vinyl Gloves Other CHEMISTRY Stealth Safety Goggles MUSIC Col-erase Pencil (specifyNumber Professor EstimatedEnrollment DateSignature Specialized Course Materials Adoption Form FAX: (905) 572

Thompson, Michael

469

Comparison of QM-Only and QM/MM Models for the Mechanism of Tungsten-Dependent Acetylene Hydratase  

E-Print Network [OSTI]

Comparison of QM-Only and QM/MM Models for the Mechanism of Tungsten-Dependent Acetylene Hydratase study on the formation of vinyl alcohol in the catalytic cycle of tungsten-dependent acetylene hydratase

Liao, Rongzhen

470

The development of palladium-catalysts for organic synthesis  

E-Print Network [OSTI]

Chapter 1. Suzuki-Miyaura coupling reactions of aryl and heteroaryl halides with aryl-, heteroaryl and vinyl boronic acids proceed in very good to excellent yield with the use of 2-(2',6'-dimethoxybiphenyl)-dicyclohexylphosphine, ...

Martinelli, Joseph R

2007-01-01T23:59:59.000Z

471

affect dielectric membrane: Topics by E-print Network  

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

how relaxation dynamics of a poly-vinyl-acetate ultra-thin film is influenced by inorganic nano-inclusions of a layered silicate (montmorillonite). Dielectric loss spectra are...

472

Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@inp-toulouse.fr  

E-Print Network [OSTI]

Toulouse, France 3 INEOS - Socit Artsienne de Vinyle, Chemin des soldats 62670 Mazingarbe, France Tel.: +33 3 21 72 83 17, E-mail: Thierry.lasuye@ineos.com Abstract: A one-dimensional steady-state model

Mailhes, Corinne

473

The effect of moisture on a glass/epoxy composite  

E-Print Network [OSTI]

Research was done to determine the effect of moisture on the transverse tensile strength and the interfacial shear strength of a glass/epoxy composite. Specimens with two different fiber sizings, one epoxy compatible and one vinyl-ester compatible...

Chatawanich, Candy Suda

2012-06-07T23:59:59.000Z

474

E-Print Network 3.0 - acid crosslinked polyelectrolyte Sample...  

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

For a crosslinking ratio of X 0.01, 0.2 ml sulfuric acid, 0.4 ml methanol, 0.6 ml... (vinyl alcohol) and poly(acrylic acid) Nicholas A. Peppas*, Shelia L. Wright Purdue...

475

E-Print Network 3.0 - aromatic siloxane segments Sample Search...  

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

and lactones.15 The ability to mono-cap poly(3-hexylthiophene) (PHT) with allyl or vinyl Source: McCullough, Richard D. - Department of Chemistry, Carnegie Mellon University...

476

Chemico-Biological Interactions 166 (2007) 277284 Chemical process based reconstruction of exposures  

E-Print Network [OSTI]

the chemical structure is similar to that of vinyl chloride, a known human carcinogen, a concern arose. Introduction -Chloroprene (2-chloro-1,3-butadiene) ( -CD) is a monomer used exclusively for the production

Illinois at Chicago, University of

477

Subscriber access provided by University Libraries | University of Notre Dame Organic Letters is published by the American Chemical Society. 1155 Sixteenth  

E-Print Network [OSTI]

primarily for use as a precursor monomer for poly(vinyl chloride).5 More reactive chloroalkanes are em NH residues which greatly accelerate N-alkylation by activating the chloride leaving group

Smith, Bradley D.

478

Cathodic disbondment resistance with reactive ethylene terpolymer blends and composite coatings  

E-Print Network [OSTI]

EPDM EVA ethylene vinyl acetate FBE fusion-bonded epoxy GMACoating Thickness on FBE . Figure 7.13: NormalizedWhen XANES was applied to FBE-coated iron, the cathodically

Love, Corey T.

2008-01-01T23:59:59.000Z

479

Design and synthesis of novel isoelectric buffers  

E-Print Network [OSTI]

Hydrolytically stable, low- and high-pI isoelectric hydrogel membranes were prepared from poly(vinyl alcohol) (PVA) as alternatives to polyacrylamide-based isoelectric membranes that hydrolyze in acidic and basic solutions. Low-pI membranes were...

Lalwani, Sanjiv Kumar Shankerdass

2006-04-12T23:59:59.000Z

480

Zinc oxide nanoparticle-polymeric thin films for dynamic strain sensing  

E-Print Network [OSTI]

onto poly(vinyl chloride) PVC Type I plates (McMaster- Carr)cm wide, and 0.3-cm thick PVC plate. It should be noted thatduring free vibration of the PVC cantilevered beam the CN-Y

Loh, Kenneth J.; Chang, Donghee

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2-chloroethyl vinyl ether" 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

INHIBITION EFFECTS ON EXTINCTION OF POLYMER BURNING  

E-Print Network [OSTI]

and poly(vinyl chloride) (PVC) in N /0 2 mixtures . Thesein comparison to Cl being added to the fuel side of PVC .Impurities in this commercial PVC and PE may have had an

Pitz, W.J.

2011-01-01T23:59:59.000Z

482

An analysis of residential window waterproofing systems  

E-Print Network [OSTI]

The prevalence of vinyl nail-on windows in the North American new home construction market has prompted ASTM International to write ASTM E2112-01 "Standard Practice for Installation of Exterior Windows, Doors and Skylights". ...

Parsons, Austin, 1959-

2004-01-01T23:59:59.000Z

483

Enhanced phytoremediation of volatile environmental pollutants with transgenic trees  

E-Print Network [OSTI]

trichloroethylene, vinyl chloride, carbon tetrachloride, benzene, and chloroform, are com- mon environmental conventional techniques. CYP2E1 P450 poplar trichloroethylene carbon tetrachloride Phytoremediation is the use greater public approval. Phytoremediation also yields other benefits including carbon sequestration, soil

484

Catalytic studies of supported Pd-Au catalysts  

E-Print Network [OSTI]

reaction conditions is the ultimate goal. This thesis is mainly focused on the application of Pd-Au supported catalysts for vinyl acetate synthesis and CO oxidation reactions using highsurface area catalysts. We have attempted to improve the conventional Pd...

Boopalachandran, Praveenkumar

2006-08-16T23:59:59.000Z

485

BEESE ET AL. VOL. 7 ' NO. 4 ' 34343446 ' 2013 www.acsnano.org  

E-Print Network [OSTI]

, spinning from CNT aerogel, and twisting or rolling of CNT films, as summarized in a recent review article coating on the surface of the DWNT bundles interacts strongly with poly(vinyl alcohol) (PVA) through

Espinosa, Horacio D.

486

Direct synthesis of pyridine and pyrimidine derivatives  

E-Print Network [OSTI]

I. Synthesis of Substituted Pyridine Derivatives via the Ruthenium-Catalyzed Cycloisomerization of 3-Azadienynes. The two-step conversion of various N-vinyl and N-aryl amides to the corresponding substituted pyridines and ...

Hill, Matthew D. (Matthew Dennis)

2008-01-01T23:59:59.000Z

487

Green chemistry : dense carbon dioxide and water as environmentally benign reaction media  

E-Print Network [OSTI]

(cont.) was investigated in scCO?, and the cycloaddition between cyclopentadiene and methyl vinyl ketone (MVK) was studied in an scCO?/liquid water environment. Nitrogen chemistry, specifically the synthesis of nitrogen ...

Allen, Andrew J. (Andrew John), 1978-

2004-01-01T23:59:59.000Z

488

Expensive Moisture/Insulation System Problems at Several Central Florida and South Texas Nursing Homes  

E-Print Network [OSTI]

. There was mold and mildew everywhere including on lamp shades, on beds and behind the vinyl wall covering. There were low cost thru - the -wall air conditionexs that removed minimal humidity. There were also 70 tempomy portable dehumidifiers in one... building! The walls were stucco over polystyrene foam (commonly called E.I.F.S.). The caulk in construction joints left much to be desired (it was terrible - holes everywhere). There was no vapor banier in the ceilings. There was vinyl wall covering...

Lotz, W. A.

2000-01-01T23:59:59.000Z

489

Nonaqueous composition for slip casting or cold forming refractory material into solid shapes  

SciTech Connect (OSTI)

A composition is described for slip casting or cold forming non-oxide refractory material(s) into solid shape comprising finely divided solid refractory materials selected from the group consisting of metal boride, refractory carbide, nitride, silicide and a refractory metal of tungsten, molybdenum, tantalum and chromium suspended in a nonaqueous liquid slip composition consisting essentially of a deflocculent composed of a vinyl chloride-vinyl acetate resin dissolved in an organic solvent.

Montgomery, L.C.

1993-08-24T23:59:59.000Z

490

Indentation and Recovery Tests of Common Resilient Floor Coverings.  

E-Print Network [OSTI]

the total indentation character- istics of rubber, vinyl-asbestos and cork tile. The total indentation was smaller under the heavy and medium loads for the thinner materials. Little effect was noted under the light load. Differences in residual... indentation of materials due to material thickness was significant for cork and vinyl-asbestos tile. Tests indicated that residual indentation was greater for the thicker samples. The thinner gage of rubber tile tended to retain more residual indentation...

Stewart, B. R.; Kunze, O. R.; Hobgood, Price

1960-01-01T23:59:59.000Z

491

Hindawi Publishing Corporation Evidence-Based Complementary and Alternative Medicine  

E-Print Network [OSTI]

lines. For MCF-7 cancer cells, the chittagonga (Pet-Ether and CH2Cl2) and rohituka (Pet-Ether) extracts, dichloromethane, and ethanol, were explored for their anticancer potential against two breast cancer (MCF-7 rohituka and chittagonga on Breast and Pancreatic Cancer Cells Leo L. Chan,1 Sherine George,2 Irfan Ahmad,3

Cunningham, Brian

492

High energy electron beam curing of epoxy resin systems incorporating cationic photoinitiators  

DOE Patents [OSTI]

A mixture of epoxy resins such as a semi-solid triglycidyl ether of tris (hydroxyphenyl) methane and a low viscosity bisphenol A glycidyl ether and a cationic photoinitiator such as a diaryliodonium salt is cured by irradiating with a dosage of electron beams from about 50 to about 150 kGy, forming a cross-linked epoxy resin polymer.

Janke, C.J.; Lopata, V.J.; Havens, S.J.; Dorsey, G.F.; Moulton, R.J.

1999-03-02T23:59:59.000Z

493

Modeling simple amphiphilic solutes in a Jagla solvent Zhiqiang Su, Sergey V. Buldyrev, Pablo G. Debenedetti, Peter J. Rossky, and H. Eugene Stanley  

E-Print Network [OSTI]

of phase equilibria and structure for dimethyl ether + sulfur dioxide and dimethyl ether + carbon dioxide J. Chem. Phys. 136, 044514 (2012) Reorientation dynamics of nanoconfined water: Power-law decay, hydrogen; published online 25 January 2012) Methanol is an amphiphilic solute whose aqueous solutions exhibit

Stanley, H. Eugene

494

United States Department of the Interior, J. A. Krug, Secretary Fish and Wildlife Service, Albert r~:. Day, Director  

E-Print Network [OSTI]

of the use of the formula~ suppose that 3.00 g. of crayfish liver is shaken vlith 100. ml. of petroleum ether of the livers, but the use of R large ' volume of petroleum ether and B small sample renders the error, aweighed sample of the liver is shaken with a measured quantity of petroleum Elther; an aliquot

495

Dynamics of Solvent Exchange in Organolithium Reagents. Lithium as a Center of Chirality1  

E-Print Network [OSTI]

Dynamics of Solvent Exchange in Organolithium Reagents. Lithium as a Center of Chirality1 Hans J slow enough for direct NMR observation.3,4 However, the detailed nature of interactions with ethers advance was the recent report by Lucht and Collum that individual ether solvates of a lithium amide can

Reich, Hans J.

496

What's in a name? Noncovalent ArCl?(HAr9)n interactions and terminology based on structure and nature of the bonding{  

E-Print Network [OSTI]

by four ether molecules and there are four lithium cationether bonds. The overall interaction of Li+ What's in a name? Noncovalent ArCl?(HAr9)n interactions and terminology based on structure Interactions are named based on the interacting moieties and on the mechanism of their interaction

Glaser, Rainer

497

Water-soluble polymers and compositions thereof  

DOE Patents [OSTI]

Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.

Smith, B.F.; Robison, T.W.; Gohdes, J.W.

1999-04-06T23:59:59.000Z

498

Published Ahead of Print 1 July 2011. 2011, 193(17):4549. DOI: 10.1128/JB.00415-11.J. Bacteriol.  

E-Print Network [OSTI]

Laboratory, Joint Genome Institute, Biosciences Division Genome Science B6, Los Alamos, New Mexico 875454 ; U and energy source (9, 10, 11, 14). This strain can also grow on other ethers (e.g., 2-methyl-1,3- dioxolane and butyl methyl ether), alcohols, and benzene as the sole carbon and energy source, and it can grow

Alvarez-Cohen, Lisa

499

10.1021/ol202573s r 2011 American Chemical Society Published on Web 10/13/2011  

E-Print Network [OSTI]

auxiliary- assisted diastereoselective allylation of N-acyliminium ions3,4 prepared from N,O-acetal TMS Vol. 13, No. 21 5920­5923 Expedient Synthesis of Chiral Homoallylamines via N,O-Acetal TMS Ethers recently reported a new approach to the synthesis of the N-acyliminium ion from N,O-acetal TMS ether, which

Suh, Young-Ger

500

Cement and Concrete Research, 2010, 40(2), 242-252, doi:10.1016/j.cemconres.2009.10.008 SSSooommmeee aaassspppeeeccctttsss ooofff ccceeelllllluuulllooossseee eeettthhheeerrrsss iiinnnfffllluuueeennnccceee ooonnn wwwaaattteeerrr tttrrraaannnssspppooorrrttt  

E-Print Network [OSTI]

: This paper evaluates and compares the impact of cellulose ethers (CE) on water transport and porous structure and porous structure evolution. KKeeyywwoorrddss:: Cellulose ethers; Porous structure; Water transport with regard to water transport and porous structure is not elucidated. These organo-mineral interactions

Paris-Sud XI, Université de