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Preparation, characterization and performance of Pt/CeO2-ZrO2 water gas shift catalyst
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
2004-02-01
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
关键词[WOS]PD/CERIA ; RH
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.
语种英语
WOS记录号WOS:000220194700004
引用统计
被引频次:14[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/321008/139571
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
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GB/T 7714
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.
APA Liu, XY.,Wang, SD.,Yuan, ZS.,Zhou, J.,Liu, N.,...&Fu, GZ.(2004).Preparation, characterization and performance of Pt/CeO2-ZrO2 water gas shift catalyst.CHINESE JOURNAL OF CATALYSIS,25(2),91-95.
MLA Liu, XY,et al."Preparation, characterization and performance of Pt/CeO2-ZrO2 water gas shift catalyst".CHINESE JOURNAL OF CATALYSIS 25.2(2004):91-95.
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