Promotion effect of cerium and lanthanum oxides on Ni/SBA-15 catalyst for ammonia decomposition
作者： Hongchao Liu , Hua Wang , Jianghan Shen , Ying Sun , Zhongmin Liu
DOI: 10.1016/J.CATTOD.2007.10.048
关键词:
摘要: Abstract CeNi/SBA-15 and LaNi/SBA-15 catalysts were prepared by deposition–precipitation (DP) method characterized N2 physical adsorption, XRD, H2-TPR, H2-chemisorption TEM. Their catalytic performances in the ammonia decomposition reaction tested compared with Ni/SBA-15 catalyst. Addition of cerium lanthanum oxides to catalyst caused some decrease BET surface area pore volume catalysts, but led a promotion effect their activity which was closely related ratio Ce (La)/Ni. The highest conversion could be obtained when (La)/Ni around 0.3. is more evident on CeNi/SBA-15(0.3) than LaNi/SBA-15(0.3) under identical conditions. show smaller nickel particle size easier reducibility comparison catalysts.
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