Patent ID: 7442824

Claim:
A process for the hydrogenation of a chlorosilane in a reactor comprising a reaction chamber having a surface which comes into contact with the chlorosilane and a heating element heated by electric current and which also has a surface which comes into contact with the chlorosilane, the reaction chamber and the heating element comprising graphite, comprising contacting an Si-containing compound and hydrogen with the surface of the reaction chamber and the surface of the heating element such that an SiC coating is formed in situ on the surface of the reaction chamber and the surface of the heating element in a first process step, and hydrogenation of chlorosilane is effected by heating of a chlorosilane/hydrogen mixture in the reaction chamber by means of the heating element in a second process step, with the first process step being carried out at a reaction temperature which is higher than the reaction temperature in the second process step.