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题名: Rh/MgO/Ce0.5Zr0.5O2 supported catalyst for autothermal reforming of methane: The effects of ceria-zirconia doping
作者: Yuan, Zhongshan1;  Ni, Changjun1;  Zhang, Chunxi1;  Gao, Diannan1;  Wang, Shudong1;  Xie, Yuming2;  Okada, Akira2
关键词: Methane autothermal reforming ;  Supported Rh/MgO/Ce0.5Zr0.5O2 catalyst ;  Ceria-zirconia
刊名: CATALYSIS TODAY
发表日期: 2009-08-15
DOI: 10.1016/j.cattod.2009.02.032
卷: 146, 期:1-2, 页:124-131
收录类别: SCI ;  ISTP
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The supported Rh/MgO/Ce0.5Zr0.5O2 catalysts were developed for autothermal reforming of methane. The effects of ceria-zirconia addition on the Rh catalyst were characterized with BET, XRD, SAED, HREM and TPR. The catalytic performance was evaluated on a flow through reactor. Results showed that the addition of ceria-zirconia enhanced the catalyst stability due to the interactions between ceria-zirconia, mgo promoter and the active component Rh. Meanwhile, the selectivity towards hydrogen in reformate was also boosted because of the increased water gas shift activity by the mixed oxides. The results also showed that the structural properties, the textural properties and the redox properties of ceria-zirconia had great influences on the catalyst performance, especially on the catalyst stability. Formations of single phase solid solution, larger pore size as well as Ce/Zr ratio at 1/1 were more desirable for ceria-zirconia dopant. As a result, one of the optimized honeycomb catalysts with the composition of 0.3% Rh/2.5% MgO/43.2% Ce(0.5)Zr(0.5)O2/54.0% cordierite (wt.%) has been continually operated at 800 degrees C up to 2000 h without deactivation. (C) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: OXYGEN STORAGE CAPACITY ;  PARTIAL OXIDATION ;  LOW-TEMPERATURE ;  NATURAL-GAS ;  HYDROGEN-PRODUCTION ;  MIXED OXIDES ;  SMALL-SCALE ;  FUEL-CELLS ;  GASOLINE ;  HYDROCARBONS
语种: 英语
WOS记录号: WOS:000269659000020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141539
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, Lab Adv Chem Engn, Dalian 116023, Peoples R China
2.Corning Inc, Sci & Technol, Corning, NY 14831 USA

Recommended Citation:
Yuan, Zhongshan,Ni, Changjun,Zhang, Chunxi,et al. Rh/MgO/Ce0.5Zr0.5O2 supported catalyst for autothermal reforming of methane: The effects of ceria-zirconia doping[J]. CATALYSIS TODAY,2009,146(1-2):124-131.
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