Clay-based SiO2 as active support of gold nanoparticles for CO oxidation catalyst: Pivotal role of residual Al

被引：11
作者：
Zhang, Yu [1 ,2 ]
Zhaorigetu, Bao [2 ]
Jia, Meilin [2 ]
Chen, Chuncheng [1 ]
Zhao, Jincai [1 ]
机构：
[1] Chinese Acad Sci, Lab Photochem, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
[2] Inner Mongolia Normal Univ, Coll Chem & Environm Sci, Inner Mongolia Key Lab Phys & Chem Funct Mat, Hohhot 010022, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2013年 / 35卷
关键词：
Gold catalyst; Clay minerals; CO oxidation; CP method; TITANIA;
D O I：
10.1016/j.catcom.2013.02.006
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：
SiO2 is generally regarded as an "inert" support of gold catalysts for CO oxidation. We find that silica obtained from a natural clay mineral can be used as excellent gold-support for efficient CO oxidation at relatively low temperature. Fine Au particles are found to locate around the Al sites, rather than on pure SiO2 area. Accordingly, high Au loading and catalytic activity for the clay-based SiO2 supports are ascribed to the residual aluminum originally from the clay. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 75
页数：4
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