Getter materials for cracking ammonia

Details Getter materials for cracking ammonia Getter materials for cracking ammonia

C - Chemistry, Metallurgy

01

B

C01B 3/04 (2006.01) F02B 43/10 (2006.01) F02B 75/12 (2006.01) H01M 8/06 (2006.01) H01M 8/18 (2006.01)

Patent

CA 2283152

A method is provided for cracking ammonia to produce hydrogen. The method includes the steps of passing ammonia over an ammonia-cracking catalyst which is an alloy including (1) alloys having general formula Zr1-xTixM1M2, wherein M1 and M2 are selected independently from the group consisting of Cr, Mn, Fe, Co, and Ni, and x is between about 0.0 and about 1.0 inclusive; and (2) between about 20 % and about 50 % Al by weight. In another aspect, the method of the invention is used to provide methods for operating hydrogen-fueled internal combustion engines and hydrogen fuel cells. In still another aspect, the present invention provides a hydrogen-fueled internal combustion engine and a hydrogen fuel cell including the above-described ammonia-cracking catalyst.

La présente invention concerne un procédé de craquage d'ammoniac destiné à produire de l'hydrogène. Ce procédé consiste à faire passer l'ammoniac sur un catalyseur de craquage d'ammoniac constitué par un alliage comprenant (1) des alliages de la formule générale Zr¿1-x?Ti¿x?M¿1?M¿2?, dans laquelle M¿1? et M¿2? sont choisis indépendamment dans le groupe composé de Cr, Mn, Fe, Co et Ni, et x est compris entre 0,0 et 1,0 inclus; et (2) entre environ 20 % et environ 50 % en poids d'Al. Selon un autre aspect, la présente invention est utilisée dans des procédés permettant d'assurer le fonctionnement de moteurs à combustion interne à hydrogène et de piles à hydrogène. Selon encore un autre aspect, la présente invention concerne un moteur à combustion interne à hydrogène et une pile à hydrogène faisant appel au catalyseur de craquage d'ammoniac précité.

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