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Effects of CeO2 addition on Ni/Al2O3 catalysts for the reaction of ammonia decomposition to hydrogen
Zheng, Weiqing; Zhang, Jian; Ge, Qingjie; Xu, Hengyong; Li, Wenzhao; Xu HY(徐恒泳); Xu HY(徐恒泳)
关键词Ni-based Catalyst Ceo2 Promotion Hydrogen Production Ammonia Decomposition
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2008-04-15
DOI10.1016/j.apcatb.2007.11.008
80期:1-2页:98-105
收录类别SCI
文章类型Article
部门归属8
项目归属801
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]FUEL-CELL APPLICATIONS ; NH3 DECOMPOSITION ; SUPPORT ; GENERATION ; PROMOTER ; NICKEL
英文摘要Effects of CeO2 addition on the catalytic performance of Ni/Al2O3 catalysts for ammonia decomposition to hydrogen were investigated by activity studies and some physico-chemical methods like N-2-adsorption/-desorption, H-2-Chemisorption, X-ray diffraction (XRD), H-2 temperature-programmed reduction (H-2-TPR) and NH3 temperature-programmed surface reduction (NH3-TPSR). The results showed that the addition of CeO2 greatly improved the catalytic activity and stability of Ni/Al2O3 catalysts for ammonia decomposition to COx-free hydrogen. 98.3% NH3 conversion and 32.9 mmol/(min g(cat)) H-2 formation rate were achieved over CeO2 promoted Ni/Al2O3 catalyst at 823 K and 30 000 ml/(h g(cat)) NH3 space velocity. The characterization results indicate that the addition of CeO2 enlarged the catalyst pores, moderated the interaction between Ni and alumnia, suppressed Ni-0 crystallites from sintering, and improved the recombinative desorption of N adatoms from the Ni-0 surface. (C) 2007 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000255673300011
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被引频次:82[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/100569
专题中国科学院大连化学物理研究所
通讯作者Xu HY(徐恒泳); Xu HY(徐恒泳)
作者单位Chinese Acad Sci, Appl Catalysis Lab, Dalian Inst Chem Phys, Grad Sch, Dalian 116023, Peoples R China
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Zheng, Weiqing,Zhang, Jian,Ge, Qingjie,et al. Effects of CeO2 addition on Ni/Al2O3 catalysts for the reaction of ammonia decomposition to hydrogen[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2008,80(1-2):98-105.
APA Zheng, Weiqing.,Zhang, Jian.,Ge, Qingjie.,Xu, Hengyong.,Li, Wenzhao.,...&徐恒泳.(2008).Effects of CeO2 addition on Ni/Al2O3 catalysts for the reaction of ammonia decomposition to hydrogen.APPLIED CATALYSIS B-ENVIRONMENTAL,80(1-2),98-105.
MLA Zheng, Weiqing,et al."Effects of CeO2 addition on Ni/Al2O3 catalysts for the reaction of ammonia decomposition to hydrogen".APPLIED CATALYSIS B-ENVIRONMENTAL 80.1-2(2008):98-105.
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