Promoted calcium-aluminate supported catalysts for synthesis...

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B01J 23/00 (2006.01) B01J 20/00 (2006.01) B01J 21/04 (2006.01) B01J 23/02 (2006.01) B01J 23/06 (2006.01) B01J 23/08 (2006.01) B01J 23/40 (2006.01) B01J 23/42 (2006.01) B01J 23/44 (2006.01) B01J 23/56 (2006.01) B01J 23/58 (2006.01) B01J 23/70 (2006.01) B01J 23/74 (2006.01)

Patent

CA 2573106

A promoted calcium-alumina supported reforming catalyst that is particularly useful for reforming reactions where low H2/CO ratio synthesis gas, such as less than 2.3 is generated directly is disclosed. The catalyst comprises from about 25 wt% to about 98 wt % alumina, from about 0.5 wt% to about 35 wt% calcium oxide, from about 0.01 wt% to about 35 wt% of a promoter, and from about 0.05 wt% to about 30 wt% of an active metal. The promoter is selected from the group consisting of titanium, zirconium, yttrium, niobium, elements of the lanthanum-series, such as, without limitation, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, ytterbium, and combinations thereof. The active metal is selected from the group consisting of nickel, cobalt, rhodium, ruthenium, palladium, platinum, iridium and combinations thereof as active metal, wherein the calcium oxide is combined with the alumina to form aluminum-rich calcium aluminates.

L~invention porte sur un catalyseur de reformation assisté d~aluminate de calcium renforcé qui est particulièrement utile aux réactions de reformation, qui permet de générer directement un gaz de synthèse de faible rapport H2/CO, par exemple inférieur à 2,3. Le catalyseur comprend entre environ 25 % en poids et environ 98 % en poids d~alumine, entre environ 0,5 % en poids et environ 35 % en poids d~oxyde de calcium, entre environ 0,01 % en poids et environ 35 % en poids d~un promoteur, et entre environ 0,05 % en poids et environ 30 % en poids d~un métal actif. Le promoteur est sélectionné parmi le groupe consistant en titane, zirconium, yttrium, niobium, éléments de la série de lanthane, comme par exemple, mais sans s~y limiter, le lanthane, le cérium, le praséodyme, le néodyme, le prométhium, le samarium, l~europium, le gadolinium, l~ytterbium et les combinaisons de ceux-ci. Le métal actif est sélectionné parmi le groupe consistant en nickel, cobalt, rhodium, ruthénium, palladium, platine, iridium et les combinaisons de ceux-ci comme métal actif, où l~oxyde de calcium se combine à l~alumine pour constituer des aluminates de calcium riches en aluminium.

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