THE EFFECTS OF RARE-EARTH-OXIDES ON THE REVERSE WATER-GAS SHIFT REACTION ON PALLADIUM ALUMINA

The interaction between palladium and ceria, both supported on alumina , has been explored in the context of the reverse water-gas shift reac tion. Specific rates of reaction were greater over catalysts containin g ceria. The reaction kinetics were consistent with reaction between d issociatively adsorbed hydrogen and dissociatively adsorbed carbon dio xide, a reaction which is accelerated by migration of adsorbed oxygen across the metal surface to the ceria surface.