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

期刊名字：中國(guó)化學(xué)快報(bào)（英文版）
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論文作者：Xue Feng Li，Huan Xin Gao，Guo J
作者單位：School of Chemistry and Molecular Engineering,Shanghai Research Institute of Petrochemical Technology
更新時(shí)間：2022-12-12
下載次數(shù)：次

論文簡(jiǎn)介

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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