高负载钛MCM-41催化剂的制备与表征  

Preparation and Characterization of High Titanium Loading MCM-41

作　　者：张天壤[1] 楼兰兰[1] 刘双喜[1] 

机构地区：[1]南开大学化学学院新催化材料科学研究所,天津300071

出　　处：《分子催化》2006年第5期452-454,共3页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金(29973016和20233030);南开大学-天津大学联合研究院教育部南开大学天津大学科技合作基金项目

摘　　要：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.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 cata- lysts showed remarkable activities in the epoxidation of cyclohexene. The sample with Si/Ti = 10 revealed highest conversion and selectivity.

关 键 词：TI-MCM-41 钛硅溶胶 催化性能 环己烯 

分 类 号：O543.32[理学—物理]