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

被引：16

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

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 26卷

关键词：

CO oxidation; Noble metal; Layered double hydroxide; GOLD CATALYSTS; HYDROTALCITE; SUPPORT; AU/TIO2;

D O I：

10.1016/j.catcom.2012.04.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：15 / 18

页数：4

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