第 44 卷第 3 期 | | Vol. 44 No. 3 | 2014 年 6 月 | Jun 2014 |
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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 |
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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 |
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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)。
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收稿日期:2013-11-30
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