Method for disproportionating methyl chlorosilane

A technology of methyl chlorosilane and methyl trichlorosilane, applied in the field of methyl chlorosilane disproportionation, can solve the problems of high reaction temperature and pressure, difficult separation, increased trimethyl output, etc., and achieves easy control of conditions and high conversion rate of raw materials , good catalytic activity
CN102140107AInactive Publication Date: 2011-08-03JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2011-08-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for disproportionating methyl chlorosilane, belonging to the field of ion liquid catalysis, and discloses a method for preparing dimethyl dichlorosilane or trimethyl chlorosilane by catalyzing the disproportionating reaction between methyl trichlorosilane and a low-boiling-point substance with N-butyl pyridine chloroaluminate ionic liquid serving as a catalyst. The method for catalyzing the disproportionating reaction between the methyl trichlorosilane and the low-boiling-point substance has the advantages of simple and convenient process, high raw material conversion ratio, high product yield, low reaction temperature, short time, easily-controlled condition, catalyst reusability realized by simple liquid separation, and the like.
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Description

technical field

[0001] The invention relates to a method for the disproportionation reaction of by-product methyltrichlorosilane and low boilers in the process of producing dimethyldichlorosilane monomer by "direct method", specifically referring to: 1. using N -Butylpyridinechloroaluminate[BPy]Cl-nAlCl 3 (n=2-6) The ionic liquid is used as a catalyst to catalyze the disproportionation reaction of methyltrichlorosilane and low boilers to prepare dimethyldichlorosilane; 2. use N -Butylpyridinechloroaluminate[BPy]Cl-nAlCl 3 (n=1.5-3) A new method for preparing trimethylchlorosilane by catalyzing the disproportionation reaction of methyltrichlorosilane and low boilers with ionic liquid as catalyst. Background technique

[0002] In the process of Rochow's direct synthesis of methylchlorosilane monomers, in addition to the target product dimethyldichlorosilane (abbreviated as dimethyl or M2), it also includes methyltrichlorosilane (abbreviated as monomethyl or M1), trimethyl B...

Claims

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