Transition metal substituted tungstophosphoric compound catalyzed oxidation of hexanol to hexanal with hydrogen peroxide

被引：5
|
作者：
Zhou, GD
Xu, ZL
Guo, XH
Zhuang, H
Li, YN
Lü, XJ
Cheng, TX [1 ]
Li, WX
Zhen, KJ
机构：
[1] Jilin Univ, Coll Chem, Changchun 130021, Peoples R China
[2] Jilin Normal Univ, Coll Chem, Siping 136000, Peoples R China
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2005年 / 85卷 / 01期
关键词：
tungstophosphoric compound; hexanol; hexanal; hydrogen peroxide;
D O I：
10.1007/s11144-005-0243-0
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 oxidation of hexanol in the presence of the Keggin-type heteropoly compounds (HPCs) H3PMonW12-nO40 (denoted as PMonWI2-n, n=0.1) and Na(5)PW(11)ZO(39) (denoted as PW(11)Z, Z = Mn, Fe, Co, Ni, Cu and Zn) was carried out to produce hexanal and hexanoic acid. The reaction was conducted in tert-butanol (t-BuOH), using cetylpyridinium bromide (CPB) salts of HPA and 15% aqueous H2O2 as oxidant under mild conditions. The PMoW11 catalyst showed higher hexanol conversion of 25%, the lowest selectivity to hexanal of 64.4% and an efficient utilization of H2O2 of 34%. Over the transition metal substituted PW(11)Z catalysts decomposition of H2O2 was rapid. For these PW(11)Z catalysts, the efficient utilization of H2O2 decreased to 9% or even lower. By means of IR, UV-visible and GC-MS techniques the catalysts were characterized.an efficient utilization of H
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页码：57 / 64
页数：8
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