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[Chemical Knowledge]:Manufacturing method and process flow of methyl trichlorosilane

The manufacturing method

of monomethyltrichlorosilane (CH3SiCl3) is an important organic silicon compound, which is widely used in the field of chemical production raw materials. This article will introduce a common manufacturing method of methyl trichlorosilane.

1. raw materials and equipment

1. Raw materials: methanol (CH3OH), silicon powder (Si), hydrogen chloride (HCl)
2. Equipment: reactor, condenser, fractionation tower, storage tank, pump, stirrer and other

2. manufacturing steps

1. Add methanol and silicon powder into the reactor according to a certain molar ratio and stir evenly.
2. Into the hydrogen chloride gas, control a certain flow and reaction temperature, reaction.
3. During the reaction, monomethyltrichlorosilane and water are produced, and the water produced by the reaction and unreacted methanol are recovered through a condenser.
4. After the reaction, the reaction solution is subjected to fractional distillation to separate monomethyltrichlorosilane and other by-products.
5. The separated methyltrichlorosilane is purified to remove impurities therefrom.

3. reaction principle

The reaction principle of this manufacturing method is as follows:

CH3OH Si 3HCl → CH3SiCl3 H2O

4. Precautions

1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction and the quality of the product.
2. During the reaction, proper stirring speed and reaction temperature should be maintained to avoid local overheating and formation of by-products.
3. The purity and yield of the product should be ensured during the fractionation process to avoid waste and environmental pollution.
4. Pay attention to safety during operation to avoid leakage and contact with fire sources.


of
5. applications As an important organosilicon compound, methyltrichlorosilane is widely used in the following fields:

1. Silicone rubber: Used to prepare high-temperature vulcanized silicone rubber, it has excellent heat resistance, Cold resistance, oxidation resistance and electrical insulation.
2. Silicone oil: It is used to prepare various silicone oils and has excellent heat resistance, oxidation resistance, shear resistance and low surface tension.
3. coupling agent: used to improve the compatibility between inorganic filler and organic resin, improve the performance of composite materials.
4. Surface treatment agent: used for waterproof, oil-proof and anti-fouling treatment of glass, ceramic, metal and other surfaces.

In short, methyl trichlorosilane has a wide range of application prospects in the field of chemical production raw materials, and by mastering its manufacturing methods, it can provide strong support for the development of related fields.
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