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
KeywordPlatinum Ceria Zirconia Composite Oxide Water Gas Shift Onboard Hydrogen Production
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
AbstractCeO2-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.
WOS IDWOS:000220194700004
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Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
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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