COLLOIDAL NOBLE METAL CATALYSTS SUPPORTED ON INORGANIC CARRIERS
Hydrosols of rhodium, palladium, and platinum were prepared by the NaBH4-reduction of the corresponding metal salts in aqueous solution without using protective agents. Colloidal metals in the hydrosols were effectively adsorbed on inorganic carriers such as Mg(OH)2, to give highly active catalysts for olefin hydrogenation.