文献类型：期刊文献

英文题名：Highly efficient mesoporous Pd/CeO2 catalyst for low temperature CO oxidation especially under moisture condition

作者：Li, Gengnan[1];Li, Liang[1];Yuan, Yuan[1];Shi, Jingjing[1];Yuan, Yinyin[1];Li, Yongsheng[1];Zhao, Wenru[1];Shi, Jianlin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2014

卷号：158

起止页码：341

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20142117752474);WOS:【SCI-EXPANDED(收录号:WOS:000339133500041)】；

基金：This study was supported by National Basic Research Program of China 2013CB933201.

语种：英文

外文关键词：Mesoporous catalyst; Heterogeneous catalysis; CO oxidation; Cerium oxide

摘要：The Pd/CeO2 catalyst was successfully prepared by an improved impregnation protocol. The resulting materials possessed relatively high specific surface area and highly dispersed Pd nanoparticles. For low temperature CO oxidation reaction, 2.5 wt% Pd loaded catalyst showed the much higher reaction activity. The total conversion temperature was as low as 40 degrees C under dry condition, much lower than that synthesized by other method. More importantly, the material also showed excellent catalytic activity and stability under moisture condition. When 2.5 vol% H2O was introduced into the feed gas, the catalytic activity showed significantly enhancement, the CO total conversion temperature decreased from 40 degrees C to 30 degrees C. The catalytic mechanism and reaction kinetic study were also discussed in detail. (C) 2014 Elsevier B.V. All rights reserved.