Chemistry of inorganic compounds – Hydrogen or compound thereof – Elemental hydrogen
Reexamination Certificate
2007-02-20
2007-02-20
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Hydrogen or compound thereof
Elemental hydrogen
C423S656000, C423S437200, C502S300000, C502S302000, C502S305000, C502S325000, C502S326000, C502S330000, C502S332000, C502S344000, C502S349000, C502S355000, C502S353000, C502S340000, C422S129000, C422S105000, C422S187000, C422S186220, C422S211000
Reexamination Certificate
active
10739519
ABSTRACT:
A method and catalysts and fuel processing apparatus for producing a hydrogen-rich gas, such as a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas, such as a syngas, contacts a water gas shift (“WGS”) catalyst, in the presence of water, preferably at a temperature of less than about 450° C. to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst formulated from:a) at least one of Rh, Ni, Pt, their oxides and mixtures thereof,b) at least one of Cu, Ag, Au, their oxides and mixtures thereof; andc) at least one of K, Cs, Sc, Y, Ti, Zr, V, Mo, Re, Fe, Ru, Co, Ir, Pd, Cd, In, Ge, Sn, Pb, Sb, Te, La, Ce, Pr, Nd, Sm, Eu, their oxides and mixtures thereof. Another disclosed catalyst formulation comprises Rh, its oxides or mixtures thereof, Pt, its oxides or mixtures thereof and Ag, its oxides or mixtures thereof. The WGS catalyst may be supported on a carrier, such as any one member or a combination of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, zeolite, pervoskite, silica clay, yttria and iron oxide. Fuel processors containing such water gas shift catalysts are also disclosed.
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Brooks Christopher James
Carhart Raymond E.
Grasselli Robert K.
Hagemeyer Alfred
Herrmann Michael
Duell Mark E.
Fitch Even Tabin & Flannery
Honda Giken Kogyo Kabushiki Kaisha
Krasnow Ronald A.
Silverman Stanley S.
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