Gas: heating and illuminating – Processes – Manufacture from methane
Reexamination Certificate
2003-07-10
2010-11-02
Neckel, Alexa D. (Department: 1795)
Gas: heating and illuminating
Processes
Manufacture from methane
C048S127500, C048S127500, C048S128000, C048S1970FM, C048S198700, C048S21400A, C048S21400A, C048S061000, C423S247000, C423S656000, C423S437200, C423S655000, C423S246000, C429S010000, C429S010000, C422S177000, C422S198000, C422S198000, C252S373000, C252S376000, C502S439000
Reexamination Certificate
active
07824455
ABSTRACT:
A method of reducing the amount of carbon monoxide in process fuel gas in a feed stream for a fuel cell. The method includes introducing a hydrocarbon feed stream into a primary reactor and reacting the hydrocarbon feed stream in effective contact with a reforming catalyst forming primary reactor products containing hydrogen, carbon monoxide, carbon dioxide, and methane; placing a high activity water gas shift catalyst system into a water gas shift converter, introducing the primary reactor products into the water gas shift converter in effective contact with the high activity water gas shift catalyst system, and reacting the carbon monoxide and water to form carbon dioxide and hydrogen using a water gas shift reaction forming the feed stream for the fuel cell; and introducing the feed stream into the fuel cell. The high water gas shift catalyst system includes a noble metal, a support comprising a mixed metal oxide of cerium oxide and at least one of zirconium oxide or lanthanum oxide. A promoter of yttrium, an alkali metal, or alkaline earth metal can be included. A support dopant can also be included.
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Great Britain Search Report dated Jan. 12, 2005 for corresponding Great Britain application GB0415342.5.
Andersen Paul Joseph
Faur-Ghenciu Anca
Feaviour Mark Robert
Reinkingh Jessica Grace
Shady Phillip
Dinsmore & Shohl LLP
General Motors Corporation
Handal Kaity V.
Neckel Alexa D.
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