An FTIR Study of the Species Adsorbed on a Rh/Al2O3 Catalyst in the Selective Reduction of NO by Propylene

Abstract

An in situ FTIR study of the reduction of NO by propylene in O₂ 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.