Abstract: A cathode for use in an electrochemical cell comprising a lithiated isopolyvanadate or heteropolyvanadate wherein the isopolyvanadate or heteropolyvanate has a cage structure, and an electrochemical battery comprising an alkali metal anode, an ionically conductive electrolyte and a cathode which comprises a lithiated isopolyvanadate or heteropolyvanadate having a cage structure, are described.
Type:
Grant
Filed:
May 26, 1998
Date of Patent:
April 18, 2000
Assignee:
Rentech, Inc.
Inventors:
Dale R. Shackle, Benjamin Chaloner-Gill
Abstract: A method for lithiating a metal compound with lithium metal in the presence of a catalyst, wherein the lithiated metal compound is useful as a cathode in an electrochemical battery, is described.
Type:
Grant
Filed:
May 26, 1998
Date of Patent:
November 9, 1999
Assignee:
Rentech, Inc.
Inventors:
Dale R. Shackle, Benjamin Chaloner-Gill
Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed and the hydrocarbon products are separated by distillation and a normally gaseous portion of the separated products are further reacted in another Fischer-Tropsch synthesis reactor to produce additional liquid hydrocarbon product.
Type:
Grant
Filed:
April 10, 1997
Date of Patent:
June 9, 1998
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
Type:
Grant
Filed:
September 16, 1994
Date of Patent:
July 8, 1997
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
April 15, 1997
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: A process of converting a feed of hydrocarbon-containing gases into liquid hydrocarbon products including a first reaction of converting the feed into one to 2.5 parts of hydrogen to one part carbon monoxide in the presence of carbon dioxide and then secondly reacting the hydrogen and carbon monoxide in a Fischer-Tropsch synthesis reactor using a promoted iron oxide catalyst slurry to form liquid hydrocarbon products, wherein the carbon dioxide from the first and second reactions is separated from the product streams and at least a portion of the separated carbon dioxide is recycled into the first reaction feed.
Type:
Grant
Filed:
April 24, 1995
Date of Patent:
April 15, 1997
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
August 6, 1996
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
April 9, 1996
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversion efficiencies and optimum chain growth are characteristics of the processes.
Type:
Grant
Filed:
March 14, 1994
Date of Patent:
April 2, 1996
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: Several Fischer-Tropsch reaction schemes using a promoted iron catalyst in a slurry reactor produce oxygenated naphtha and diesel fractions on distillation that reduce particulate emissions in diesel engines. High carbon conversions efficiencies and optimum chain growth are characteristics of the processes.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
March 19, 1996
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson
Abstract: An oxygen-containing diesel fuel additive for reducing particulate airborne emissions which additive is produced in a Fischer-Tropsch synthesis reaction using a promoted iron-based catalyst. The additive contains alcohols having at least five carbon atoms, and is employed in diesel fuel in an amount sufficient to provide an oxygen content in the diesel fuel of up to about 2% by weight while maintaining diesel fuel specification limits for viscosity.
Type:
Grant
Filed:
April 13, 1992
Date of Patent:
June 28, 1994
Assignee:
Rentech, Inc.
Inventors:
Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson