Jacobsen’s catalyst was immobilized onto SBA-15 by multi-step grafting, and this new heterogenized catalyst exhibited comparable catalytic performance with the corresponding homogeneous counterpart for the epoxidatio...Jacobsen’s catalyst was immobilized onto SBA-15 by multi-step grafting, and this new heterogenized catalyst exhibited comparable catalytic performance with the corresponding homogeneous counterpart for the epoxidation of alkenes.When NH4OAc were used as cocatalyst both yields and ee’s were higher than that of without co catalyst.展开更多
Salen Mn(III)/MCM-48 catalyst was prepared and characterized by FT-IR,XRD,UV-Vis,and GC.The catalyst was evaluated by the epoxidation of styrene;remarkable activity and enantioselectivity were received.
文摘Jacobsen’s catalyst was immobilized onto SBA-15 by multi-step grafting, and this new heterogenized catalyst exhibited comparable catalytic performance with the corresponding homogeneous counterpart for the epoxidation of alkenes.When NH4OAc were used as cocatalyst both yields and ee’s were higher than that of without co catalyst.
文摘Salen Mn(III)/MCM-48 catalyst was prepared and characterized by FT-IR,XRD,UV-Vis,and GC.The catalyst was evaluated by the epoxidation of styrene;remarkable activity and enantioselectivity were received.
