DICP OpenIR
学科主题物理化学
Influence of particle sizes in the Au/ZrO2 catalysts for WGS reaction
Shen WJ(申文杰)
会议名称The 5th international conference on gold science, technology and its applications
会议日期2009-7-26
2009-07-26
会议地点德国
页码293/1
部门归属五室
主办者海德堡大学
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 play essential roles in determining the catalytic reactivity. By keeping the size of Au particle to be ~3 nm, the increase in the particle size of ZrO2 from ~7 nm to ~55 nm caused significant decrease in the reaction rate. When the particle size of ZrO2 was fixed at ~20 nm, the conversion of CO decreased greatly with increasing the size of gold particles from 2.9 nm 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 Au particle and H2O is activated on the surface of ZrO2 through the formation of formate species, acting as key reaction intermediates.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/113578
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)
推荐引用方式
GB/T 7714
Shen WJ. Influence of particle sizes in the Au/ZrO2 catalysts for WGS reaction[C],2009:293/1.
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