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The mechanism of the Direct Synthesis is not known. However, the copper catalyst is essential for the reaction to proceed.
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Dimethyldichlorosilane is a tetrahedral, organosilicon compound with the formula Si(CH3)2Cl2. At room temperature it is a colorless liquid that readily reacts with water to form both linear and cyclic Si-O chains.
Dimethyldichlorosilane is made on an industrial scale as the principal precursor to dimethylsilicone and polysilane compounds.
Dimethyldichlorosilane is made on an industrial scale as the principal precursor to dimethylsilicone and polysilane compounds.
Rochow’ssynthesis involved passing methyl chloride through a heated tube packed with ground silicon and copper (I) chloride. The current industrial method places finely ground silicon in a fluidized bed reactor at about 300 °C.
The catalyst is applied as Cu2O. Methyl chloride is then passed through the reactor to produce mainly dimethyldichlorosilane.
The catalyst is applied as Cu2O. Methyl chloride is then passed through the reactor to produce mainly dimethyldichlorosilane.
2CH3Cl + Si → (CH3)2SiCl2
The mechanism of the Direct Synthesis is not known. However, the copper catalyst is essential for the reaction to proceed.
In addition to dimethyldichlorosilane, products of this reaction include CH3SiCl3, CH3SiHCl2, and (CH3)3SiCl, which are separated from each other by fractional distillation.
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