Catalyst formulations for hydrogen generation

Details Catalyst formulations for hydrogen generation Catalyst formulations for hydrogen generation

C - Chemistry, Metallurgy

01

B

C01B 3/16 (2006.01) B01J 23/38 (2006.01) B01J 23/48 (2006.01) B01J 23/50 (2006.01) B01J 23/52 (2006.01) B01J 23/54 (2006.01) B01J 23/66 (2006.01) B01J 23/70 (2006.01) B01J 23/755 (2006.01) B01J 23/76 (2006.01) B01J 23/835 (2006.01) B01J 23/89 (2006.01)

Patent

CA 2511018

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; and c) 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.

L'invention concerne un procédé, un catalyseur et un appareil de traitement de carburant permettant de produire un gaz riche en hydrogène, tel que du gaz de synthèse riche en hydrogène. Selon le procédé, un gaz contenant CO, tel un gaz de synthèse, entre en contact avec un catalyseur de conversion catalytique, en présence d'eau, de préférence à une température inférieure à environ 450 ·C afin de produire un gaz riche en hydrogène, tel un gaz de synthèse riche en hydrogène. L'invention concerne aussi un catalyseur de conversion catalytique formulé à partir de : a) au moins élément parmi Rh, Ni, Pt, leurs oxydes et leurs mélanges ; b) au moins un élément parmi Cu, Ag, Au, leurs oxydes et leurs mélanges; et c) au moins un élément parmi 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, leurs oxydes et leurs mélanges. L'invention concerne aussi une autre formulation de catalyseur comprenant Rh, ses oxydes ou ses mélanges, Pt, ses oxydes ou ses mélanges et Ag, ses oxydes ou ses mélanges. Le catalyseur de conversion catalytique peut être soutenu par un support, tel n'importe quel élément parmi ou une combinaison de alumine, zircone, oxyde de titane, cérium, hydroxyde de magnésium, oxyde de lanthane, oxyde de niobium, zéolite, argile de silice, et oxyde de fer. L'invention porte aussi sur des processeurs de carburant contenant ce catalyseur de conversion catalytique.

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