Epoxidation of alkenes catalyzed by heteropolyoxometalate as pillars in layered double hydroxides

被引：37

作者：

Watanabe, Y ^{[1
]}

Yamamoto, K ^{[1
]}

Tatsumi, T ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Grad Sch Engn, Tokyo 113, Japan

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1999年 / 145卷 / 1-2期

关键词：

layered double hydroxides; heteropolyoxometalate; alkene epoxidation;

D O I：

10.1016/S1381-1169(99)00012-6

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：

The epoxidation of alkenes with hydrogen peroxide or molecular oxygen, in the presence of aldehyde catalyzed by heteropolyoxometalate (HPOM) salts and layered double hydroxides (LDHs) containing HPOM anions as pillars, has been investigated. In the case of oxidation with hydrogen peroxide, a lacunary Keggin-ion, SiW11O398-, was more active than SiW12O404-. For this reaction system using hydrogen peroxide, intercalated SiW11O398- showed higher stability in structure and activity than free K8SiW11O39. For the oxidation using molecular oxygen and aldehyde, SiW12O404- showed higher activity than SiW11O398-. It was confirmed that SiW12O404- was intercalated between the brucite-type layers of the LDHs without change in structure. Ni-containing LDHs without any interstitial polyoxometalate showed high activity for the oxidation of cyclohexene with the combination of O-2 and aldehyde. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：281 / 289

页数：9

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