SEPARATION OF SILANE HAVING HYDROGEN ATOM DIRECTLY BONDED WITH SILICON FROM SILANE

摘要

The present invention is a process wherein silanes containing hydrogen atoms bonded directly to silicon are removed from silanes of the general formula RxCl3-xSi-(SiRyCl2-y)n-A(I) and mixtures thereof, in which R denotes an optionally halogen-substituted hydrocarbon radical having 1 to 18 carbon atoms which is free from ethylenic double bonds, A denotes a chlorine atom or a radical R, x has the value of 0, 1, 2 or 3, y has the value of 0, 1 or 2 and n has the value of 0 or 1. The silanes containing hydrogen atoms bonded directly to silicon are reacted with hydrogen chloride in the presence of silver or gold as catalysts to give the corresponding chlorosilanes.