Supported molten-metal catalysts

Datta, Ravindra; Singh, Ajeet; Halasz, Istvan; Serban, Manuela

Title: Supported molten-metal catalysts

Full Record
Other Related Research

Abstract

An entirely new class of catalysts called supported molten-metal catalysts, SMMC, which can replace some of the existing precious metal catalysts used in the production of fuels, commodity chemicals, and fine chemicals, as well as in combating pollution. SMMC are based on supporting ultra-thin films or micro-droplets of the relatively low-melting (<600.degree. C.), inexpensive, and abundant metals and semimetals from groups 1, 12, 13, 14, 15 and 16, of the periodic table, or their alloys and intermetallic compounds, on porous refractory supports, much like supported microcrystallites of the traditional solid metal catalysts. It thus provides orders of magnitude higher surface area than is obtainable in conventional reactors containing molten metals in pool form and also avoids corrosion. These have so far been the chief stumbling blocks in the application of molten metal catalysts.

Inventors:

Datta, Ravindra ^[1]; Singh, Ajeet ^[1]; Halasz, Istvan ^[1]; Serban, Manuela ^[1]

Iowa City, IA

Issue Date:: 2001-01-01

Research Org.:: University of Iowa

OSTI Identifier:: 873673

Patent Number(s):: 6218326

Assignee:: University of Iowa Research Foundation (Iowa City, IA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

Show more

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D2255/1021 - Platinum
B01D53/9418 - {for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J23/42 - Platinum
B01J35/0013 - {Colloids}
B01J35/006 - {metal crystallite size}
B01J35/12 - Liquids or melts
B01J37/023 - {using molten compounds}

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C2521/04 - Alumina
C07C2521/06 - Silicon, titanium, zirconium or hafnium
C07C2521/08 - Silica
C07C2521/10 - Magnesium
C07C2523/02 - of the alkali- or alkaline earth metals or beryllium
C07C2523/06 - of zinc, cadmium or mercury
C07C2523/10 - of rare earths
C07C2523/12 - of actinides
C07C2523/22 - Vanadium
C07C2523/26 - Chromium
C07C2523/28 - Molybdenum
C07C2523/34 - Manganese
C07C2523/36 - Rhenium
C07C2523/42 - Platinum
C07C2523/46 - Ruthenium, rhodium, osmium or iridium
C07C2523/50 - Silver
C07C2523/72 - Copper
C07C2523/745 - Iron
C07C2523/75 - Cobalt
C07C2523/755 - Nickel
C07C5/367 - Formation of an aromatic six-membered ring from an existing six-membered ring, e.g. dehydrogenation of ethylcyclohexane to ethylbenzene

Show less

DOE Contract Number:: FG02-96ER12184

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: supported; molten-metal; catalysts; entirely; called; smmc; replace; existing; precious; metal; production; fuels; commodity; chemicals; fine; combating; pollution; based; supporting; ultra-thin; films; micro-droplets; low-melting; <600degree; inexpensive; abundant; metals; semimetals; 12; 13; 14; 15; 16; periodic; alloys; intermetallic; compounds; porous; refractory; supports; microcrystallites; traditional; solid; provides; magnitude; surface; obtainable; conventional; reactors; containing; molten; pool; form; avoids; corrosion; chief; stumbling; blocks; application; molten metal; intermetallic compound; /502/

Citation Formats


                    Datta, Ravindra, Singh, Ajeet, Halasz, Istvan, and Serban, Manuela. Supported molten-metal catalysts.  United States: N. p., 2001. 
        Web.

Copy to clipboard


                    Datta, Ravindra, Singh, Ajeet, Halasz, Istvan, & Serban, Manuela. Supported molten-metal catalysts.  United States.

Copy to clipboard


                    Datta, Ravindra, Singh, Ajeet, Halasz, Istvan, and Serban, Manuela. Mon .  
        "Supported molten-metal catalysts".  United States.  https://www.osti.gov/servlets/purl/873673.

Copy to clipboard


                    
@article{osti_873673,

  title        = {Supported molten-metal catalysts},

  author       = {Datta, Ravindra and Singh, Ajeet and Halasz, Istvan and Serban, Manuela},

  abstractNote = {An entirely new class of catalysts called supported molten-metal catalysts, SMMC, which can replace some of the existing precious metal catalysts used in the production of fuels, commodity chemicals, and fine chemicals, as well as in combating pollution. SMMC are based on supporting ultra-thin films or micro-droplets of the relatively low-melting (<600.degree. C.), inexpensive, and abundant metals and semimetals from groups 1, 12, 13, 14, 15 and 16, of the periodic table, or their alloys and intermetallic compounds, on porous refractory supports, much like supported microcrystallites of the traditional solid metal catalysts. It thus provides orders of magnitude higher surface area than is obtainable in conventional reactors containing molten metals in pool form and also avoids corrosion. These have so far been the chief stumbling blocks in the application of molten metal catalysts.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2001},

  month        = {1}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Low temperature oxidation using support molten salt catalysts

Patent Weimer, Alan W.; Czerpak, Peter J.; Hilbert, Patrick M.

Molten salt reactions are performed by supporting the molten salt on a particulate support and forming a fluidized bed of the supported salt particles. The method is particularly suitable for combusting hydrocarbon fuels at reduced temperatures, so that the formation NO.sub.x species is reduced. When certain preferred salts are used, such as alkali metal carbonates, sulfur and halide species can be captured by the molten salt, thereby reducing SO.sub.x and HCl emissions.
Full Text Available
Method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock in the presence of a molten metal halide catalyst

Patent Gorin, Everett [San Rafael, CA]

A method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock to produce lighter hydrocarbon fuels by contacting the feedstock with hydrogen in the presence of a molten metal halide catalyst, the method comprising: mixing the feedstock with a heavy naphtha fraction which has an initial boiling point from about 100.degree. to about 160.degree. C. with a boiling point difference between the initial boiling point and the final boiling point of no more than about 50.degree. C. to produce a mixture; thereafter contacting the mixture with partially spent molten metal halide and hydrogen under temperature and pressure conditions so that the temperaturemore » « less
Full Text Available
Method for producing hydrocarbon fuels and fuel gas from heavy polynuclear hydrocarbons by the use of molten metal halide catalysts

Patent Gorin, Everett [San Rafael, CA]

In a process for hydrocracking heavy polynuclear carbonaceous feedstocks to produce lighter hydrocarbon fuels by contacting the heavy feedstocks with hydrogen in the presence of a molten metal halide catalyst in a hydrocracking zone, thereafter separating at least a major portion of the lighter hydrocarbon fuels from the spent molten metal halide and thereafter regenerating the spent molten metal halide by incinerating the spent molten metal halide by combustion of carbon and sulfur compounds in the spent molten metal halide in an incineration zone, the improvement comprising: (a) contacting the heavy feedstocks and hydrogen in the presence of the moltenmore » « less
Full Text Available
Method for producing hydrocarbon fuels from heavy polynuclear hydrocarbons by use of molten metal halide catalyst

Patent Gorin, Everett [San Rafael, CA]

In a process for hydrocracking heavy polynuclear carbonaceous feedstocks to produce lighter hydrocarbon fuels by contacting the heavy feedstocks with hydrogen in the presence of a molten metal halide catalyst, thereafter separating at least a substantial portion of the carbonaceous material associated with the reaction mixture from the spent molten metal halide and thereafter regenerating the metal halide catalyst, an improvement comprising contacting the spent molten metal halide catalyst after removal of a major portion of the carbonaceous material therefrom with an additional quantity of hydrogen is disclosed.
Full Text Available
Method for preparation of nanoceria supported atomic noble metal catalysts and the application of platinum single atom catalysts for direct methane conversion

Patent Wang, Chao; Xie, Pengfei; Pu, Tiancheng

Described are methods for converting methane to olefins, aromatics, or a combination thereof using a single atom catalyst comprising CeO2 nanoparticles impregnated with individual atoms of noble metals including Pt, Pd, Rh, Ru, Ag, Au, Ir, or a combination thereof. These single atom catalysts of the present invention are heated with methane to form olefins and aromatics.
Full Text Available

Similar Records