Preparation method of highly active cuprous chloride catalyst for organosilicon monomer synthesis

Abstract

The preparation method of the highly active cuprous chloride catalyst used for the synthesis of organosilicon monomers of the present invention comprises the following steps: 1) using ethanol as a solvent and the cuprous chloride original powder with a particle size of 20-30 μm as a solute, the two Mix to make the solid content 60%; 2) Add the binder polyethylene glycol to the solution obtained in 1) and wet ball mill; 3) Sieve the slurry obtained after 2) ball milling to obtain a slurry with a solid content of 60% Suspended slurry, so that the average particle size of cuprous chloride particles reaches 5-6 μm viscous slurry; 4) Add dispersant polyoxyethylene ether to the slurry obtained in 3) to make the slurry a uniform suspension; 5) Put 4) After sieving, the obtained slurry is transported to the drying chamber by a high-pressure pump for atomization, and the nozzle is sprayed vertically from bottom to top, spraying mist-like droplets, N2 is electrically heated and descends spirally from the top, and the counter-flowing droplets When meeting and contacting, water and organic solvents evaporate rapidly, and dry into a spherical catalyst product in a very short time.

Description

technical field [0001] The invention relates to the field of catalysts for synthesizing organosilicon monomers, in particular to a method for preparing a highly active cuprous chloride catalyst for synthesizing organosilicon monomers. Background technique [0002] Silicone refers to the general term for high molecular polymers containing O-Si-O main chains and organic groups bonded to Si atoms. The most important factor restricting the development of the silicone industry is the synthesis technology of silicone monomers. Silicone monomers are raw materials for the preparation of silicone oil, silicone rubber, silicone resin and silane coupling agents. Several basic monomers can produce thousands of Silicone products. There are many production methods for organosilicon monomers. Take methylchlorosilane as an example. At present, the industrial production of methylchlorosilane at home and abroad is based on CH 3 The "direct method" synthesis process of Cl and Si under the ac...

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Problems solved by technology

Cuprous chloride is a copper-based catalyst widely used. A large number of studies and actual production have shown that the surface morphology, surface groups and particle size distribution of cuprous chloride catalyst have a very significant effect on the synthesis reaction of organosilicon monomers. Many researchers have proposed the catalyst post-treatment process, that is, through various dispersion techniques, including ultrasonic treatment, ball milling, etc., to disperse the prepared catalyst to obtain the required shape and particle size distribution. However, these post-treatment operations The process is cumbersome and consumes a lot of energy

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