The present invention relates to a method for preparing an omega-haloalkyl
dialkylhalosilane by means of a hydrosilylation reaction in the presence
of a catalytically effective amount of a hydrosilylation catalyst
containing a platinum group metal. The catalytic metal is recovered by
(i) subjecting the distillation residue to controlled hydrolysis to
release the gaseous H-Hal haloacid, and providing an aqueous medium
containing the catalytic metal with a low hydrolysable halide content
Si-Hal=2%, expressed by weight of Hal, then (2i) recovering the platinum
group catalytic metal from said aqueous medium by means of one of the
conventional techniques specific to catalyst manufacturers that do not
use a solid adsorbent and operate in ordinary facilities that do not have
to be acid-resistant.