CPC C01B 3/047 (2013.01) [B01J 21/04 (2013.01); B01J 23/10 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 23/462 (2013.01); C01B 3/56 (2013.01); H01M 8/04022 (2013.01); H01M 8/0606 (2013.01); H01M 8/222 (2013.01); C01B 2203/042 (2013.01); C01B 2203/0465 (2013.01); C01B 2203/066 (2013.01)] | 48 Claims |
1. A method of ammonia decomposition comprising:
(a) providing a catalyst, comprising:
a support comprising alumina and a layer adjacent to the support, wherein the layer comprises the support doped with an oxide of at least one of an alkali metal and a rare earth metal;
wherein the layer comprises aluminum (Al), cerium (Ce), and lanthanum (La), wherein a molar ratio of La and Ce comprises at least about 50:50 and not more than about 90:10; and
one or more active metals adjacent to the layer, wherein the one or more active metals comprise Ru, Pt, or Pd;
wherein a concentration of the one or more active metals is at least about 0.1, and not more than about 15 wt %; and
(b) bringing the catalyst in contact with ammonia at a temperature of at least about 400° C. and not more than about 700° C. to generate a reformate stream comprising hydrogen and nitrogen at an ammonia conversion efficiency of at least about 70% and at most about 99.9%.
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