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题名: Preparation, characterization and performance of Pt/CeO2-ZrO2 water gas shift catalyst
作者: Liu, XY;  Wang, SD;  Yuan, ZS;  Zhou, J;  Liu, N;  Zhang, CX;  Fu, GZ
关键词: platinum ;  ceria ;  zirconia ;  composite oxide ;  water gas shift ;  onboard hydrogen production
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2004-02-01
卷: 25, 期:2, 页:91-95
收录类别: SCI
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: CeO2-ZrO2 composite oxide with different Ce/Zr ratios was prepared by co-precipitation and a series of Pt/CeO2-ZrO2 catalyst samples for water gas shift reaction (WGS) was prepared by impregnation of CeO2-ZrO2 with chloroplatinic acid solution. The activity of these catalyst samples was measured in simulated reforming gas. The parameters of preparation and operation of the catalyst were investigated by comparing CO conversion at different temperatures, space velocities and steam/gas ratios. The optimized composition of the catalyst was attained by adjusting the content of Zr and Pt. The catalyst samples were active in a wider temperature range than the traditional Cu-based tow temperature shift catalysts, but their activity was lower than that of Cu-based catalyst at lower temperature. The Pt/CeO2-ZrO2 may be a good candidate for the onboard hydrogen production because it is stable when exposed to air at high temperature. The CO conversion decreased with increasing space velocity, and increased with increasing steam/gas ratio. The Pt/Ce0.8Zr0.2O2 catalyst showed the highest activity among the catalyst samples. The activity of the catalyst increased with increasing Pt loading when w(Pt) < 0.6%. The XRD result indicated that the solid solution was formed in the CeO2-ZrO2 composite oxide. The activity of the catalyst can be improved by increasing the Pt atoms on the support surface.
关键词[WOS]: PD/CERIA ;  RH
语种: 英语
WOS记录号: WOS:000220194700004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139571
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 116023, Liaoning, Peoples R China

Recommended Citation:
Liu, XY,Wang, SD,Yuan, ZS,et al. Preparation, characterization and performance of Pt/CeO2-ZrO2 water gas shift catalyst[J]. CHINESE JOURNAL OF CATALYSIS,2004,25(2):91-95.
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