Structure and reactivity of sol-gel sulphonic acid silicas

被引：195

作者：

Wilson, K ^{[1
]}

Lee, AF ^{[1
]}

Macquarrie, DJ ^{[1
]}

Clark, JH ^{[1
]}

机构：

[1] Univ York, Dept Chem, Green Chem Grp, York YO10 5DD, N Yorkshire, England

来源：

APPLIED CATALYSIS A-GENERAL | 2002年 / 228卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

solid acid catalysts; organically modified silica; clean technology; green chemistry; sulphonic acid; mesoporous silica;

D O I：

10.1016/S0926-860X(01)00956-5

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 range of mesoporous solid sulphonic acid catalysts have been prepared from a mercaptopropyl-trimethoxysilane (MPTS) precursor by sol-gel synthesis. The creation of surface sulphonic acid functionality via thiol oxidation has been followed by XPS and Raman spectroscopy. It is possible to continuously vary the sulphonic acid loading from 1 to 12 wt.% while maintaining pore volume and mesostructure. The resulting materials exhibit high thermal stability and acid strength across the composition range and show good activity and selectivity in esterification and condensation reactions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：127 / 133

页数：7