MCM-41负载手性Salen Mn(Ⅲ)的制备及其催化性能  

Preparation and enantioselective epoxidation catalysis of chiral Salen-Mn(Ⅲ) complex supported on MCM-41

作　　者：何乐芹[1] 赵继全[2] 

机构地区：[1]河北工程大学理学院,河北邯郸056038 [2]河北工业大学化工学院,天津300130

出　　处：《河北工程大学学报（自然科学版）》2007年第3期48-51,63,共5页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(20376017)

摘　　要：采用化学键联的方法制备了MCM-41负载的带隔离基团的多相化Salen Mn(Ⅲ)催化剂,利用FT-IR、UV-Vis1、H NMR及ICP对催化剂进行了表征,证明了手性配合物成功负载到MCM-41上。随后考察了该催化剂催化烯烃不对称环氧化反应及其循环使用的性能。实验发现多相化催化剂催化活性有所降低,但延长反应时间,催化(1,2)-二氢化萘不对称环氧化的转化率达60.5%,其环氧化产物的对映体过量值(ee)为52.4%。MCM-41 supported heterogenized Salen Mn （Ⅲ） complex was prepared by anchoring method, the catalyst was characterized by FT-IR, UV-Vis, ^1H NMR and ICP. The results indicated that the complex was supported on the MCM-41. It was applied as catalyst in olefin enantioselective epoxidation. It was found that the activity decreased sharply after the chiral complex was immobilized on MCM-41. But the epoxidation of （1,2）-dihydronaphthalene, 60.5% conversion and 52.4% ee were also obtained by prolonging reaction time.

关 键 词：MCM-41 手性SALEN Mn(Ⅲ)配合物 多相化 不对称环氧化 (1 2)-二氢化萘 

分 类 号：O643.56[理学—物理化学]