第 44 卷第 3 期Vol. 44 No. 3
2014 年 6 月Jun 2014

所属栏目:农药及中间体

磷钨酸季铵盐催化合成环氧环己烷
屈铠甲,钟 宏 (中南大学 化学化工学院, 湖南 长沙 410083)
摘 要:以钨酸、磷酸、双氧水和氯化十六烷基吡啶为原料,合成了具有(C16H33C6H5N)3PO4(WO3)4结构的磷钨杂多酸季铵盐相转移催化剂,采用红外光谱和元素分析对所制得的催化剂进行表征。将该催化剂用于催化环己烯合成环氧环己烷的反应,结果表明,在催化剂用量2%、n(环己烯)∶n(双氧水)=2∶1、反应温度50℃、反应时间180 min的条件下,环氧环己烷的选择性达到98.86%,双氧水利用率达95.76%。
关键词:环氧环己烷;磷钨杂多酸季铵盐;双氧水;环己烯
中图分类号:TQ231.1+4  文献标识码:A  文章编号:1009-9212(2014)03-0021-02
Synthesis of Cyclohexene Oxide Catalyzed by Heteropolyphosphatotungstate
QU Kai-jia, ZHONG Hong (School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China)
Abstract:A heteropolyphosphatotungstate catalyst(C16H33C6H5N)3PO4(WO3)4 was synthesized from sodium tungstate, phosphate, hydrogen peroxide and cetylpyridinium chloride monohydrate, and the structure was characterized by means of FT-IR and elemental analysis. The catalyst was used for the epoxidation of cyclohexene by hydrogen peroxide to afford cyclohexene oxide in selectivity of 98.86% and the utilization of hydrogen peroxide of 95.76%.
Key words:cyclohexene oxide; heteropoly phosphatotungstate; hydrogen peroxide; cyclohexene
作者简介:屈铠甲(1978-),男,湖南永州人,工程师,硕士,主要从事精细化工合成方面的研究(E-mail:qkj78@sina.com)。
收稿日期:2013-11-30