环己烯催化环氧化合成环氧环己烷的的优化实验研究  

Optimizaton of Epoxycyclohexane Synthesis by Catalytic Epoxidation of Cyclohexene

作　　者：徐燏[1] 

机构地区：[1]濮阳职业技术学院石油化工系,河南濮阳457000

出　　处：《化工时刊》2013年第5期22-26,共5页Chemical Industry Times

基　　金：河南省杰出人才创新基金资助项目(0121001900)

摘　　要：实验选用绿色环保且原子经济性高的分子氧或H2O2为氧化剂,以自制的固载型过氧化磷钨杂多酸季铵盐相转移催化剂,对环己烯催化环氧化合成环氧环己烷研合成工艺条件进行了研究。得出在不使用任何溶剂时的优化条件为:反应物料物质的量配比n环己烯∶nH2O2=1.75∶1(摩尔数),wH2O2水溶液(w=30%)∶w催化剂=7.08∶1(质量比),wH2O2水溶液(w=30%)∶w助剂A=21.24∶1(质量比);反应温度55℃,反应时间5.5 h。在此条件下环己烯的平均当量转化率为84.89%,目的产物环氧环己烷的选择性平均值达94.53%。The green and high atom economy molecular oxygen or H2O2 as the oxidant,the synthesis conditions of catalytic epoxidation of cyclohexene synthetic epoxythe cyclohexane were studied by using self - made immobilized peroxide phosphotungstic heteropoly acid quaternary ammonium salt phase transfer catalyst. The optimum conditions without using any solvent were： the ratio of the amount of substance of the reaction mass ncycloh ： nH2O2 = 1. 75：1 （ molar ratio）, the WH2O2aqueous solution（ w = 30% ） ： wcatalyst= 7.08： 1 （ mass ratio）, WH2O2aqueous solution （ W = 30% ） ： Waid A = 21. 24：1 （mass ratio） ; reaction temperature was 55, reaction time was 5.5h. Under these conditions, the average equivalent weight conversion rate of the cyclohexene was 84.89%, the selectivity average of the desired product epoxycyclohexane attained 94.53 %.

关 键 词：环己烯 催化环氧化 环氧环己烷 优化条件 

分 类 号：O643.32[理学—物理化学]