Detailed kinetics of methylphenyldichlorosilane synthesis from methyldichlorosilane and chlorobenzene by gas phase condensation

doi:10.1016/j.cjche.2014.12.009

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (6): 954-961.DOI: 10.1016/j.cjche.2014.12.009

• 催化、动力学与反应工程 • 上一篇下一篇

Detailed kinetics of methylphenyldichlorosilane synthesis from methyldichlorosilane and chlorobenzene by gas phase condensation

Tong Liu, TiefengWang, Yunlong Huang, Chao Wang, Jinfu Wang

Beijing Key Laboratory of Green Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

收稿日期:2014-09-10 修回日期:2014-12-21 出版日期:2015-06-28 发布日期:2015-07-09
通讯作者: Jinfu Wang

Detailed kinetics of methylphenyldichlorosilane synthesis from methyldichlorosilane and chlorobenzene by gas phase condensation

Tong Liu, TiefengWang, Yunlong Huang, Chao Wang, Jinfu Wang

Beijing Key Laboratory of Green Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2014-09-10 Revised:2014-12-21 Online:2015-06-28 Published:2015-07-09
Contact: Jinfu Wang

摘要/Abstract

摘要： Methylphenyldichlorosilane (MPDS, CH₃C₆H₅SiCl₂) is an important silicone monomer for the synthesis of highperformance polymethylphenylsiloxane polymers. In this work, the mechanism of the synthesis of MPDS from methyldichlorosilane and chlorobenzene by gas phase condensation was studied, and a kinetic model with 35 species and 58 elementary reactions was established. Experiments were carried out in a tubular reactor under a wide range of reaction conditions. The calculated mole fractions of the reactants and products were in a good agreement with the experimental results. A mechanism of the insertion of chloromethylsilylene into the C\Cl bond of chlorobenzene was proposed, which was proved to be the main pathway of MPDS production. The established kinetic model can be used in design and optimization of the industrial reactor for MPDS synthesis.

关键词: Detailed kinetics, Methylphenyldichlorosilane, Chloromethylsilylene, Gas phase condensation

Abstract: Methylphenyldichlorosilane (MPDS, CH₃C₆H₅SiCl₂) is an important silicone monomer for the synthesis of highperformance polymethylphenylsiloxane polymers. In this work, the mechanism of the synthesis of MPDS from methyldichlorosilane and chlorobenzene by gas phase condensation was studied, and a kinetic model with 35 species and 58 elementary reactions was established. Experiments were carried out in a tubular reactor under a wide range of reaction conditions. The calculated mole fractions of the reactants and products were in a good agreement with the experimental results. A mechanism of the insertion of chloromethylsilylene into the C\Cl bond of chlorobenzene was proposed, which was proved to be the main pathway of MPDS production. The established kinetic model can be used in design and optimization of the industrial reactor for MPDS synthesis.

Key words: Detailed kinetics, Methylphenyldichlorosilane, Chloromethylsilylene, Gas phase condensation

Tong Liu, TiefengWang, Yunlong Huang, Chao Wang, Jinfu Wang. Detailed kinetics of methylphenyldichlorosilane synthesis from methyldichlorosilane and chlorobenzene by gas phase condensation[J]. Chinese Journal of Chemical Engineering, 2015, 23(6): 954-961.

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Detailed kinetics of methylphenyldichlorosilane synthesis from methyldichlorosilane and chlorobenzene by gas phase condensation

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