Nanoscopic tin-oxygen linings on mesoporous silica as a novel catalyst for organic hydrogen transfer reaction

被引：22

作者：

Burch, R

Caps, V

Gleeson, D

Nishiyama, S

Tsang, SC

机构：

[1] Univ Reading, Dept Chem, Catalysis Res Ctr, Reading RG6 6AD, Berks, England

[2] Kobe Univ, Dept Sci & Chem Engn, Kobe, Hyogo 6578501, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2000年 / 194卷

基金：

英国工程与自然科学研究理事会;

关键词：

MCM-41; mesoporous silica; nanomaterials; tin oxide catalysts; hydrogen transfer reactions; crotonaldehyde selective hydrogenation;

D O I：

10.1016/S0926-860X(99)00376-2

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：

Deposition of tin-oxygen species on mesoporous silica (MCM-41) was achieved via chemical reaction of SnEt4 vapour with surface silanol groups followed by heat treatment in air. Evidence suggested that highly reactive tin-oxygen overlayers were formed on the internal surface of the MCM-41 silica, These tin-oxygen modified silicas, after H-2 pre-treatment, showed excellent activity in catalysing reduction of crotonaldehyde to crotyl alcohol using propan-2-ol as the hydrogen transfer agent (acetone was formed as the by-product). It was also found that the catalytic activity per gram of tin increased dramatically as the tin loading decreased, The increase in the specific activity with the decrease in tin loading was attributed to the improved dispersion of the tin-oxygen overlayers. (C) 2000 Elsevier Science B,V, All rights reserved.

引用

页码：297 / 307

页数：11

共 18 条

[1] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].