Patent ID: 8722915

Claim:
A process for preparing organohalosilanes, the process comprising: combining hydrogen, a halosilane having the formula H a SiX 4-a (I), and an organohalide having the formula RX (II), wherein R is C 1 -C 10 alkyl or C 4 -C 10 cycloalkyl, each X is independently halo, and the subscript a is 0, 1, or 2, in the presence of a sufficient amount of a catalyst effective in enabling the replacement of one or more of the halo groups of the halosilane with the R group from the organohalide, at a temperature from 200 to 800° C., to form an organohalosilane and a hydrogen halide, wherein the catalyst is at least one metal selected from iron, ruthenium, osmium, cobalt, nickel, palladium, platinum, copper, and gold wherein the volumetric ratio of hydrogen to halosilane is from 1:3 to 1:0.001 and the volumetric ratio of hydrogen to organohalide is from 1:10 to 1:0.001, and wherein the catalyst is optionally treated with the hydrogen or the halosilane prior to the combining.