申请人:Rhone-Poulenc Chimie
公开号:US05627297A1
公开(公告)日:1997-05-06
The process for cleaving the heavy by-products derived from the synthesis of alkylchlorosilanes, in particular C.sub.1 to C.sub.6 alkylchlorosilanes, more particularly methylchlorosilanes, in particular for the cleavage of alkylchlorodisilanes, in particular methylchlorodisilanes having from one to five chlorine atoms, is carried out by treatment with hydrochloric acid in the presence of a catalytic system which comprises at least one metal phosphate, preferably associated with a basic impregnation compound. The metal phosphate may in particular correspond to the formula: M(XPO.sub.4).sub.y in which M represents a metal chosen from: monovalent metals, in which case X is 2H and y=1 divalent metals, in which case X is H and y=1 trivalent metals, in which case X is absent and y=1 tetravalent metals, in which case X is: H and y=2 pentavalent metals, in which case X is 0 and y=1.
从合成烷基氯硅烷的重质副产物中裂解的过程,特别是C.sub.1至C.sub.6烷基氯硅烷,更特别是甲基氯硅烷的裂解,特别是用于裂解具有一到五个氯原子的烷基氯二硅烷,通过在催化体系的存在下用氢氯酸处理来进行。该催化体系包括至少一种金属磷酸盐,优选与碱性浸渍化合物结合。金属磷酸盐可以特别对应于以下公式:M(XPO.sub.4).sub.y,其中M表示所选金属:一价金属,此时X为2H且y=1;二价金属,此时X为H且y=1;三价金属,此时X不存在且y=1;四价金属,此时X为H且y=2;五价金属,此时X为0且y=1。