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题名: Effects of CeO2 addition on Ni/Al2O3 catalysts for the reaction of ammonia decomposition to hydrogen
作者: Zheng, Weiqing1;  Zhang, Jian1;  Ge, Qingjie1;  Xu, Hengyong1;  Li, Wenzhao1
通讯作者: 徐恒泳
关键词: Ni-based catalyst ;  CeO2 promotion ;  hydrogen production ;  ammonia decomposition
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2008-04-15
DOI: 10.1016/j.apcatb.2007.11.008
卷: 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
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.
关键词[WOS]: FUEL-CELL APPLICATIONS ;  NH3 DECOMPOSITION ;  SUPPORT ;  GENERATION ;  PROMOTER ;  NICKEL
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000255673300011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100569
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Appl Catalysis Lab, Dalian Inst Chem Phys, Grad Sch, Dalian 116023, Peoples R China

Recommended Citation:
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.
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