Zero platinum group metal catalysts

B - Operations – Transporting – 01 – J

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B01J 23/72 (2006.01) B01D 53/94 (2006.01) B01J 35/04 (2006.01)

Patent

CA 2729235

The present invention pertains to catalyst systems for nitrogen oxide, carbon monoxide, hydrocarbon, and sulfur reactions that are free or substantially free of platinum group metals. The catalyst system of the present invention comprise a substrate and a washcoat, wherein the washcoat comprises at least one oxide solid, wherein the oxide solid comprises one or more selected from the group consisting of a carrier material oxide, a catalyst, and mixtures thereof. The catalyst system may optionally have an overcoat, wherein the overcoat comprises at least one oxide solid, wherein the oxide solid comprises one or more selected from the group consisting of a carrier material oxide, a catalyst, and mixtures thereof. The catalyst comprises one or more selected from the group consisting of a ZPGM transition metal catalyst, a mixed metal oxide catalyst, a zeolite catalysts, or mixtures thereof.

La présente invention concerne des systèmes catalytiques pour des réactions doxyde dazote, de monoxyde de carbone, dhydrocarbure et de soufre, qui sont exempts ou sensiblement exempts de métaux du groupe du platine. Le système catalytique de la présente invention comprend un substrat et un washcoat, ledit washcoat comprenant au moins un solide oxydé, le solide oxydé comprenant un ou plusieurs éléments choisis dans le groupe constitué dun matériau support oxydé, dun catalyseur et leurs mélanges. Le système catalytique peut éventuellement comprendre un revêtement, ledit revêtement comprenant au moins un solide oxydé, le solide oxydé comprenant un ou plusieurs éléments choisis dans le groupe constitué dun matériau support oxydé, dun catalyseur et leurs mélanges. Le catalyseur comprend un ou plusieurs éléments choisis dans le groupe constitué dun catalyseur à base de métaux de transition ZPGM, dun catalyseur à base doxydes métalliques mixtes, dun catalyseur à base de zéolithe ou leurs mélanges.

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