Organic reactions in excess water catalyzed by solid acids

被引：62

作者：

Okuhara, T ^{[1
]}

Kimura, M ^{[1
]}

Kawai, T ^{[1
]}

Xu, Z ^{[1
]}

Nakato, T ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 060, Japan

来源：

CATALYSIS TODAY | 1998年 / 45卷 / 1-4期

关键词：

acidic salts of heteropoly acid; water-tolerant catalyst; hydration; hydrolysis;

D O I：

10.1016/S0920-5861(98)00251-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A solid acid, Cs2.5H0.5PW12O40, efficiently catalyzed the reactions in which water participates such as hydrolysis of ester, hydration of alkene, and esterification, in excess water. This acidic salt was far superior in the activity to other oxide catalysts such as H-ZSM-5, Nb2O5, SO42-/ZrO2, and SiO2-Al2O3. When Cs2.5H0.5PW12O40 was separated from the reactant solution and reused five times for the hydrolysis of ethyl acetate repeatedly, the reaction rate was retained more than 90%. These results demonstrates that Cs2.5H0.5PW12O40 is an efficient water-tolerant solid acid. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：73 / 77

页数：5

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