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学科主题: 物理化学
题名: Ceria promoted Ni/Al2O3 catalysts for ammonia decomposition to COx-free hydrogen
作者: Zheng WQ(郑维庆) ;  Zhang J(张建) ;  Ge QJ(葛庆杰) ;  Xu HY(徐恒泳) ;  Li WZ(李文钊)
会议名称: 14th International Congress on Catalysis
会议日期: 2008-7-13
出版日期: 2008-07-13
会议地点: 韩国
通讯作者: Hengyong Xu
部门归属: 八室
主办者: 国际催化协会
摘要: Promotion of Ni/Al2O3 catalysts for NH3 decomposition with ceria was investigated by activity studies and BET adsorption, H2-chemisorption, XRD, H2-TPR and NH3-TPSR. CeO2 greatly improved the catalytic activity and stability of Ni/Al2O3 catalyst for ammonia decomposition to COx-free hydrogen. 98.3% NH3 conversion and 32.9 mmol/(min gcat) H2 formation rate were achieved over CeO2 promoted Ni/Al2O3 at 823 K and 30 000 ml/(h gcat) NH3 space velocity. The physico-chemical characterization indicated that the addition of CeO2 enlarged the catalyst pores, moderated the interaction between Ni and alumnia, suppressed Ni0 crystallites from sintering, and improved the recombinative desorption of N adatoms from Ni0 surface.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113440
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zheng WQ,Zhang J,Ge QJ,et al. Ceria promoted Ni/Al2O3 catalysts for ammonia decomposition to COx-free hydrogen[C]. 见:14th International Congress on Catalysis. 韩国. 2008-7-13.
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