Effect of solvents on propylene epoxidation over TS-1 catalyst |
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Authors: | Yulong Wu Qingshan Liu Xueli Su Zhentao Mi |
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Institution: | (1) Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China;(2) School of Chemical Engineering, Tianjin University, Tianjin, 300072, China |
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Abstract: | Solvents have an important effect on the epoxidation of propylene catalyzed by TS-1. The experimental results show that, in
different solvents, the catalytic activity of epoxidation is in the following order: methanol > 2-propanol > 2-butanol > acetonitrile
> acetone > tetrahydrofuran. Based on the reaction mechanism, the effects of solvents on the epoxidation were studied from
eight aspects, which included the electronic effect, the steric effect, the polarity of solvent, the effect of solvent on
sorption and diffusion of reactant, the oxidation of alcohol, the etherification of PO, the deactivation of TS-1 and the solubility
of propylene in the solvents. The electronic effect, steric effect and the polarity of solvent were considered to be the main
aspects. This work may provide theoretical guidance for choosing solvents for these kinds of reactions and also may serve
as basis for further industrialization.
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Translated from Journal of Tsinghua University (Science and Technology), 2007, 47(9): 116–120 译自: 清华大学学报(自然科学版] |
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Keywords: | titanium silicalite-1 (TS-1) propylene epoxidation solvent effects |
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