A new method for immobilization of polymer-protective colloidal platinum metals via co-ordination capture with anchored ligands. Synthesis of the first example of a mercapto-containing supported metallic catalyst for hydrogenation of alkenes with high activity

Abstract

A poly(N-vinyl-2-pyrrolidone)(PVP)-protective metallic rhodium or platinum colloid interacts at room temperature with a suspension of silica gel, bearing mercapto ligands, in a 1 : 1 methanol–water system to give a well dispersed heterogeneous metallic catalyst which shows excellent activity for the hydrogenation of alkenes.