文献类型：期刊文献

英文题名：Layered double hydroxide confined Au colloids: High performance catalysts for low temperature CO oxidation

作者：Li, Liang[1];Chen, Qian[1];Zhang, Qian[1];Shi, Jingjing[1];Li, Yongsheng[1];Zhao, Wenru[1];Shi, Jianlin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, 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：2012

卷号：26

起止页码：15

外文期刊名：CATALYSIS COMMUNICATIONS

收录：;EI(收录号：20122915248825);WOS:【SCI-EXPANDED(收录号:WOS:000308285100004)】；

基金：This study was supported by National Nature Science Foundation of China (grant no. 21073059), Program for Changjiang Scholars and Innovative Research Team in University (IRT0825) and the Fundamental Research Funds for the Central Universities (no. WK1013001).

语种：英文

外文关键词：CO oxidation; Noble metal; Layered double hydroxide

摘要：A LDH confined Au nano-catalyst has been successfully synthesized through a flocculation and in-situ reduction method. In this composite, Au nano-colloids were evenly dispersed in LDH gallery and its particle size was less than 1 nm. The highly dispersed gold nano-colloids in layered Mg-Al double hydroxide support were found to be a high performance catalyst for CO lower temperature oxidation. The catalytic experiments indicated that the CO oxidation reaction could be initiated at lower than -30 degrees C and almost a 100% conversion can be achieved at 0 degrees C. The catalyst stability studies show that after 12 h reaction at 0 degrees C; the CO conversion has not any apparent decrease. (C) 2012 Elsevier B.V. All rights reserved.