In recent years, ammonia has been widely considered as an attractive hydrogen carrier which can supply hydrogen to fuel cells by thermal decomposition. In this report, catalytic ammonia decomposition over Ni/BaCe
0.75Y
0.25O
3-δ (Ni/BCY) was systematically investigated. The BCY support was prepared by citric acid complex method, and Ni was loaded by impregnation. The effects of various parameters, including the calcination temperatures of the BCY support and catalyst, the Ni sources for Ni impregnation, and the reduction temperature of the prepared catalyst, on the catalytic activity of the catalysts was evaluated. The maximum of ammonia conversion rate at 550 ºC was
ca. 93% over the optimized Ni/BCY catalyst. Based on the experimental results, a mechanism for the high catalytic activity of Ni/BCY for ammonia decomposition was proposed.
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