OPTIMUM COMPOSITIONS OF Rh–Sn–γ–Al2O3 CATALYSTS FOR SIMULTANEOUS REDUCTION OF NITRIC OXIDE AND CARBON MONOXIDE

Abstract
The simultaneous reduction of NO and CO on Rh–Sn–γ–Al2O3 was studied in reductive and oxidative atmosphere. The effect of alloying with Sn on catalytic activity was obviously observed in oxidative atmosphere. The reaction temperature lowered in the presence of O2. The optimum Rh/Sn atomic ratio decreased with increasing concentration of O2 in the reactant.