Catalytic oxidation of benzyl alcohol on Au or Au-Pd nanoparticles confined in mesoporous silica

被引：140
|
作者：
Ma, Chun Yan [1 ]
Dou, Bao Juan [1 ]
Li, Jin Jun [1 ]
Cheng, Jie [1 ]
Hu, Qin [1 ]
Hao, Zheng Ping [1 ]
Qiao, Shi Zhang [2 ,3 ]
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
[2] Univ Queensland, ARC, Ctr Excellence Funct Nanomat, Sch Engn, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 92卷 / 1-2期
基金：
国家高技术研究发展计划(863计划);
关键词：
Gold and palladium; Mesoporous SBA-15; Nanoparticles; Oxidation; Benzyl alcohol; SELECTIVE AEROBIC OXIDATION; GOLD; EFFICIENT; SBA-15; TEMPERATURE; ALDEHYDES; NANOCLUSTERS; COPOLYMER; TRIBLOCK; KETONES;
D O I：
10.1016/j.apcatb.2009.07.007
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：
In this paper, we report the synthesis of Au/SBA-15 and Au-Pd/SBA-15 materials by impregnation and grafting methods. It was found that the Au-Pd/SBA-15 sample prepared by the grafting method could highly disperse metal nanoparticles in mesoporous channels of SBA-15 and exhibit excellent catalytic performances for the selective oxidation of benzyl alcohol to benzaldehyde at mild reaction conditions (air atmosphere, 80 degrees C). The prevention of agglomeration and leaching of gold nanoparticles by restricting them inside the mesopores of SBA-15 leads to a high stability of Au-Pd/SBA-15. In both approaches. the addition of Pd to Au/SBA-15 catalysts can decrease the size of gold nanoparticles, which attributes to higher activity for the selective aerobic oxidation of benzyl alcohol. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：202 / 208
页数：7
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