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Au/ZrO2 catalysts for low-temperature water gas shift reaction: Influence of particle sizes
Li, Juan; Ta, Na; Song, Wei; Zhan, Ensheng; Shen, Wenjie; Shen WJ(申文杰)
关键词Au/zro2 Particle Size Contact Boundary Water Gas Shift Low-temperature
刊名GOLD BULLETIN
2009
42期:1页:48-60
收录类别SCI
文章类型Article
部门归属5
项目归属501
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Inorganic & Nuclear ; Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Materials Science
关键词[WOS]CO OXIDATION ; GOLD CATALYSTS ; AU/CEO2 CATALYSTS ; PRETREATMENT CONDITIONS ; AU-CEO2 CATALYSTS ; SUPPORTED AU ; ZIRCONIA ; HYDROGEN ; AU/TIO2 ; CERIA
英文摘要The size effects of Au and ZrO2 particles on the structural property and the catalytic performance of Au/ZrO2 catalysts for the water gas shift reaction were extensively investigated. It was found that the Au-ZrO2 contact boundaries played essential roles in determining the catalytic reactivity. By keeping the size of Au particle to be similar to 3 nm, the increase in the particle size of ZrO2 from similar to 7 nm to similar to 55 nm caused significant decrease in the reaction rate. When the particle size of ZrO2 was fixed at similar to 20 nm, the conversion of CO decreased greatly with increasing the size of gold particle from 2.9 to 6.2 nm. IR spectroscopy and kinetic study revealed that the water gas shift reaction occurred at the Au-ZrO2 contact boundaries, where CO is adsorbed on the Au species and H2O is activated on the surface of ZrO2 through the formation of formate species, acting as key reaction intermediates.
语种英语
原文出处查看原文
WOS记录号WOS:000265079200007
引用统计
被引频次:30[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/321008/101623
专题中国科学院大连化学物理研究所
通讯作者Shen WJ(申文杰)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Li, Juan,Ta, Na,Song, Wei,et al. Au/ZrO2 catalysts for low-temperature water gas shift reaction: Influence of particle sizes[J]. GOLD BULLETIN,2009,42(1):48-60.
APA Li, Juan,Ta, Na,Song, Wei,Zhan, Ensheng,Shen, Wenjie,&申文杰.(2009).Au/ZrO2 catalysts for low-temperature water gas shift reaction: Influence of particle sizes.GOLD BULLETIN,42(1),48-60.
MLA Li, Juan,et al."Au/ZrO2 catalysts for low-temperature water gas shift reaction: Influence of particle sizes".GOLD BULLETIN 42.1(2009):48-60.
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