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学科主题: 物理化学
题名: Preparation of Ce-modified Raney Ni Catalysts and Their Application in Aqueous-Phase Reforming of Cellulose
作者: Wen, Guodong1;  Xu, Yunpeng1;  Liu, Qianhe1, 2;  Wang, Congxin1, 2;  Liu, Hao1, 2;  Tian, Zhijian1, 3
通讯作者: 温国栋
关键词: Aqueous-phase reforming ;  Cellulose ;  Hydrogen ;  Raney Ni catalyst ;  Ce
刊名: CATALYSIS LETTERS
发表日期: 2011-12-01
DOI: 10.1007/s10562-011-0712-1
卷: 141, 期:12, 页:1851-1858
收录类别: SCI
文章类型: Article
部门归属: DNL08
项目归属: DNL0802
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A series of Ce-modified Raney Ni (RNi) catalysts were successfully prepared by a simple wet chemical route and employed in aqueous-phase reforming of cellulose. Remarkable enhancement in hydrogen selectivity and yield after the Ce introduction was observed. At 533 K and autogenous pressure, a highest hydrogen yield of 17.8 mmol/g(cellulose), which was comparable with that of 5 wt% Pt/AC, could be obtained over Ce-modified catalyst at a Ce:Ni ratio of 0.054. The catalysts were characterized by N-2 adsorption/desorption, XRD, SEM, XPS and H-2-TPD. It was found that cerium existed at the surface of the catalyst as Ce(OH)(3), and more defects were generated during Ce modification. Based on the characterization and catalytic performance, it was suggested that the deposited Ce(OH)(3) may transform into reducible CeO2 under the reaction conditions, thus promoting the desired water-gas shift reaction, leading to more H-2. On the other hand, the active sites for undesired methanation reaction may be effectively poisoned by Ce modification, thus leading to less undesired methane.
关键词[WOS]: BIOMASS-DERIVED HYDROCARBONS ;  ETHYLENE-GLYCOL ;  HYDROGEN-PRODUCTION ;  XPS ;  SURFACES ;  GLUCOSE ;  METAL ;  WATER ;  CO ;  REDUCTION
语种: 英语
WOS记录号: WOS:000299919300017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118537
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, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wen, Guodong,Xu, Yunpeng,Liu, Qianhe,et al. Preparation of Ce-modified Raney Ni Catalysts and Their Application in Aqueous-Phase Reforming of Cellulose[J]. CATALYSIS LETTERS,2011,141(12):1851-1858.
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