High titanium loading MCM-41 was prepared via the novel post-grafting method by impregnating calcined MCM-41 into the Ti-Si sol.In comparison with the conventional direct synthesis and the impregnation method,the regular mesostructure was preserved and the four-coordinated titanium was evenly dispersed on the inner surface of MCM-41 through the present strategy.The product was characterized by XRD and UV-vis.The as-synthesized catalysts showed remarkable activities in the epoxidation of cyclohexene.The sample with Si/Ti = 10 revealed highest conversion and selectivity.
