AN FTIR STUDY OF THE SPECIES ADSORBED ON A RH/AL2O3 CATALYST IN THE SELECTIVE REDUCTION OF NO BY PROPYLENE

An in situ FTIR study of the reduction of NO by propylene in O-2 has shown that the reaction on the Rh/Al2O3 surface at 623 K leads to the formation of IR bands assigned to adsorbed hydrocarbons, -NCO, -CN, -NO+, -CO32- and CO2 species. The intensity of the bands depends on the reaction time and the presence or absence of the individual reactants.