Studies in surface science and catalysis vol:105 issue:Part A-C pages:1109-1116
A series of cation (e.g. Li, Na, K) exchanged [Mn(Bpy)(2)](2+)-Y catalysts was prepared and tested in alkene oxidation reactions with hydrogen peroxide. The activity and selectivity undergoes marked influence from pre-ion exchange. Higher epoxide yields could be obtained for Li-pre-exchanged [Mn(Bpy)(2)](2+)-LiY. The Li+ cation promotes hydrogen peroxide activation at the active site, resulting in a higher cyclohexene epoxidation rate.
PROGRESS IN ZEOLITE AND MICROPOROUS MATERIALS, PTS A-C