| Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance |
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| 作者姓名： | Xue Feng Li Huan Xin Gao Guo Jie Jin Lin Ding Lu Chen Hong Yun Yang Xin He Qing Ling Chen |
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| 作者单位： | 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 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 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.
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| 关 键 词： | 硅烷化钛接枝 HMS催化剂 特性 环氧化作用 性能 |
| 收稿时间： | 2006-11-21 |
Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance |
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| 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. |
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| Authors: | Xue Feng Li Huan Xin Gao Guo Jie Jin Lin Ding Lu Chen Hong Yun Yang Xin He Qing Ling Chen |
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| Institution: | 1. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;2. Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China |
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| Abstract: | 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. |
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| Keywords: | Ti-grafted HMS Silylation The CVD method Epoxidation |
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