Citation: Xue Feng Li, Huan Xin Gao, Guo Jie Jin, Lin Ding, Lu Chen, Hong Yun Yang, Xin He, Qing Ling Chen. Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance[J]. Chinese Chemical Letters, ;2007, 18(5): 591-594. doi: 10.1016/j.cclet.2007.03.021 shu

Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance

Xue Feng Li ^a, ,
Huan Xin Gao ^b ,
Guo Jie Jin ^b ,
Lin Ding ^b ,
Lu Chen ^b ,
Hong Yun Yang ^b ,
Xin He ^b ,
Qing Ling Chen ^a,b

a School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;
b Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China

Received Date: 21 November 2006

Fund Project: Thanks the financial support from the Ministry of Science and Technology of the People's Republic of China (973 Program No. 2003CB615805).

Silylated Ti-grafted hexagonal mesoporous silica (HMS) catalyst was prepared by the chemical vapor deposition (CVD) using TiCl₄ as titanium source and hexamethyldisilazane (HMDSZ) as silylating agent. The samples were characterized by XRD, N₂-adsorption, FTIR, ²⁹Si NMR, DR UV-vis, and evaluated by epoxidation of styrene, propylene, cyclohexene, and 1-hexene with cumene hydroperoxide (CHP) as oxidant, respectively. It is revealed that the catalyst possesses typical mesoporous structure, high hydrophobicity and highly dispersed tetracoordinated titanium sites and hence exhibits excellent performance in epoxidation of olefins.
- Ti-grafted HMS,
- Silylation,
- The CVD method,
- Epoxidation
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