Noble metal-free nickel catalyst formulations for hydrogen...

C - Chemistry – Metallurgy – 01 – B

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C01B 3/00 (2006.01) B01J 19/00 (2006.01) B01J 23/80 (2006.01) B01J 23/835 (2006.01) B01J 23/843 (2006.01) B01J 27/057 (2006.01) C01B 3/16 (2006.01)

Patent

CA 2511173

The invention relates to methods of using noble metal-free nickel catalysts to generate a hydrogen-rich gas from gas mixtures containing carbon monoxide and water, such as water-containing syngas mixtures, where the nickel may exist in either a supported or a bulk state. The noble metal-free water gas shift catalyst of the invention comprises Ni in either a supported or a bulk state and at least one of Ge, Cd, In, Sn, Sb, Te, Pb, their oxides and mixtures thereof. The invention is also directed toward noble metal-free nickel catalysts that exhibit both high activity and selectivity to hydrogen generation and carbon monoxide oxidation.

L'invention concerne des procédés d'utilisation de catalyseurs à base de nickel exempts de métaux nobles, destinés à générer un gaz riche en hydrogène à partir de mélanges de gaz contenant du monoxyde de carbone et de l'eau, par exemple, des mélanges de gaz synthétique contenant de l'eau, le nickel pouvant être déposé sur un support ou être en vrac. Le catalyseur à décalage de phase gazeuse contenant de l'eau, exempt de métaux nobles, comprend Ni sur un support ou en vrac, et au moins un des éléments Ge, Cd, In, Sn, Sb, Te, Pb, leurs oxydes et leurs mélanges. L'invention concerne aussi des catalyseurs à base de nickel exempts de métaux nobles qui ont une activité et une sélectivité élevées en matière de génération d'hydrogène et d'oxydation de monoxyde de carbone.

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