作　　者： (王正磊）; (周同心）; (王涛）; (魏永梅）; (黄婕）; (田恒水）;

机构地区： 华东理工大学化工学院,上海200237

出　　处： 《现代化工》 2017年第9期135-138,共4页

摘　　要： 研究了双核金属卟啉仿生催化丙烯的环氧化反应。考察了反应温度、反应时间、丙烯醛和丙烯的摩尔比、催化剂摩尔分数和种类对反应的影响,适宜的反应条件是:反应温度为100℃,反应时间为1.5 h,催化剂的摩尔分数为9.72×10^(-5)%,醛烯摩尔比为0.625,搅拌速率为500 r/min。结果表明,双核金属卟啉的中心金属、环外取代基对催化活性同样具有影响,不同取代基的双核Cu金属卟啉催化活性顺序为—OCH_3>—H>—F;不同中心金属的双核金属卟啉催化活性顺序为Fe>Cu。其中催化效果较好的为[T(p-OCH_3)PPFe]_2O,丙烯转化率为29.06%,环氧丙烷的收率和选择性分别为27.31%和93.95%。 Epoxidation of propylene to make propylene oxide catalyzed by μ-oxo-bismetalloporphyrins is investigated.The results indicate that the reaction temperature,reaction time,molar ratio of acraldehyde to propylene,and concentration and type of catalysts have significant effects on the reaction. The appropriate reaction conditions are as follows： 100℃,1. 5 h,500 rpm for stirring velocity,n（ acraldehyde） ∶ n（ propylene） = 0. 625,catalyst concentration at 9. 72×10^（-5）mol%.The central metal and substituent group of μ-oxo-bismetalloporphyrins also have influence on catalytic activity.The catalytic activity order of different substituent group of μ-oxo-bismetalloporphyrins are —OCH3—H —F.With different central metal,the catalytic activity order are FeCu.Of which the best catalytic result is given by ／[T（ pOCH3） PPFe／]2O,with the yield,selectivity and conversion rate being 27. 31%,93. 95% and 29. 06% respectively.

关 键 词： 仿生催化 双核金属卟啉 环氧丙烷 丙烯 环氧化