Preparation of Noble Metal Catalysts Supported on Phosphorus-Containing-Chelate Resin with Tetraethylenepentamine

Abstract

Noble metal catalysts supported on diphenyl phosphonate7formaldehyde chelate resin with tetraethylenepentamine (DPP-TEP) were prepared.
The gold, platinum, and palladium ions adsorbed on DPP-TEP were easily reduced by sodium borohy dride in basic ethanol solution under reflux for about 20 min to give metallic gold, platinum, and palladium supported on resin. The noble metal catalysts supported on resin could be used at 300°C several times.
The catalytic activities of noble metals supported on resin for the hydrogenation of alkene increased in the order: gold catalyst < palladium catalyst < platinum catalyst. Using the platinum catalyst in the hydrogenation of alkadienes, propadiene and 1, 3-butadiene were converted to the corresponding alkanes quantitatively at 50 °C. Using the palladium catalyst, propadiene and 1, 3-butadiene were converted to propylene (90%) and 1-butene (80%) at 50°C respectively.