Cs-substituted tungstophosphoric acid salt supported on smesoporous silica

被引：90

作者：

Choi, SM ^{[1
]}

Wang, Y ^{[1
]}

Nie, ZM ^{[1
]}

Liu, J ^{[1
]}

Peden, CHF ^{[1
]}

机构：

[1] Pacific NW Lab, Richland, WA 99352 USA

来源：

CATALYSIS TODAY | 2000年 / 55卷 / 1-2期

关键词：

tungstophosphoric acid (TPA); heteropoly acid (HPA); mesoporous silica; Cs-TPA;

D O I：

10.1016/S0920-5861(99)00231-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this paper, we describe the characterization and catalytic properties of mesoporous silica supported Cs-substituted tungstophosphoric acid salt (Cs-TPA/MS) with improved dispersion of the active clusters compared to materials described previously in the literature. In particular, transmission electron micrographs and the activity results for a model alkylation reaction are presented as evidence for the enhanced dispersion and performance. In addition, we demonstrate improvements in the physical and thermal stability of these materials with Cs-substitution using various characterization techniques. (C)2000 Elsevier Science B.V. All rights reserved.

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收藏

页码：117 / 124

页数：8

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