相转移催化H_2O_2环氧化环己烯合成环氧环己烷  

Cyclohexene Oxide Synthesized by Epoxidation of Cyclohexene and Hydrogen Peroxide with Phase Transfer Catalyst

作　　者：王振兴[1] 章亚东[1] 唐平贵[1] 

机构地区：[1]郑州大学化工学院,河南郑州450002

出　　处：《精细化工》2006年第10期1023-1026,共4页Fine Chemicals

基　　金：河南省自然科学基金资助项目(编号:511020800)~~

摘　　要：对反应控制相转移催化剂制备方法进行了改进,催化剂产率可达94%,并用红外光谱(IR)和元素分析对催化剂进行了表征;将催化剂用于以w(H2O2)=34.5%为氧化剂,以质量分数76.7%的工业粗环己烯为原料合成环氧环己烷;探讨了反应时间、反应温度、环己烯与H2O2的摩尔比、催化剂用量、溶剂用量等因素对反应的影响。获得的较佳合成条件(以0.08 mol H2O2计)为:反应温度40℃,反应时间90 m in,催化剂用量0.6 g,n(C6H10)∶n(H2O2)=2.5∶1,溶剂1,2-二氯乙烷70 mL。该条件下环氧环己烷平均选择性为96.1%,环氧环己烷的平均收率达91.7%。将回收的催化剂用于反应,环氧环己烷的平均选择性和平均收率分别为95.3%和90.9%。A phase transfer catalyst （PTC） was prepared with improved method and characterized by IR spectrum and elementary analysis. Cyclohexene oxide was synthesized by epoxidation of raw cyclohexene [ω（ C6H10 ） = 76.7% ] and industrial hydrogen peroxide [ ω （ H2O2 ） = 34.5% %] as an oxidant with the PTC. The proper synthesis conditions were reaction temperature 40 ℃, reaction time 90 min,n（C6H10）：n（H2O2） =2.5：1 （based on 0.08 tool H202）,catalyst 0.6 g and solvent 1,2- dichloroethane 70 mL. The average selectivity and yield of cyclohexene oxide were 96. 1% and 91.7% ,respectively. With the reused catalyst, the average selectivity and yield of cyclohexene oxide could attain 95.3% and 90.9%, respectively.

关 键 词：环己烯 环氧化 环氧环已烷 相转移催化剂 

分 类 号：O624[理学—有机化学]