离子液体中氧化锰八面体分子筛催化醇的氧化  

Selective Aerobic Oxidation of Alcohols Catalyzed by Octahedral Molecular Sieves in Ionic Liquids

作　　者：刘霖[1] 马娟娟[1,2] 付廷明[2] 李善忠[1,2] 童志伟[1] 魏运洋[2] 

机构地区：[1]淮海工学院化工学院,连云港222005 [2]南京理工大学化工学院

出　　处：《应用化学》2010年第7期801-805,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(50873042);淮海工学院自然科学研究项目(Z2009015;Z2009021)

摘　　要：按文献方法制备了3种八面体MnO6分子筛催化剂K-OMS-2、H-K-OMS-2和Cu-OMS-2,用SEM和XRD测试技术表征了它们的结构和组成。考察了这3种催化剂对用氧气选择性氧化醇为相应的醛或酮的催化作用,研究了采用不同OMS-2在离子液体[bmim]PF6中反应时间和反应温度对催化反应的影响。其中H-K-OMS-2对苄醇和烯丙醇氧化的转化率和选择性均超过90%。催化剂和离子液体可分别用萃取法和减压蒸馏法从反应体系中回收,其中减压蒸馏法回收循环使用效果较好。Three manganese oxide octahedral molecular sieves（ OMS-2） ,K-OMS-2,H-K-OMS-2 and Cu-OMS-2,were synthesized according to the literature. The structure and composition of the obtained materials were characterized by SEM and XRD. OMS-2 was applied to the selective oxidation of alcohols to generate corresponding aldehydes or ketones. The effects of reaction time and temperature on the catalytic reactions were investigated in ionic liquid [bmim]PF6 when different OMS-2 materials were used as catalysts. The conversion and selectivity of benzylic or allylic alcohols catalyzed by H-K-OMS-2 both reached over 90%. The solvent and catalyst could be recovered from the reaction system by extraction method and vacuum distillation method,respectively. The catalytic system recovered by vacuum distillation method showed better recycling performance.

关 键 词：氧化锰 八面体分子筛 醇 氧化 离子液体 

分 类 号：O622.3[理学—有机化学]