Catalytic reduction of NO by H2 over Ag/Al2O3 under dry reducing conditions

The kinetics and mechanism of the reduction of NO and N2O by H2 over Ag/Al2O3 were studied with transient step response and isotope exchange techniques. Dissociation of hydrogen and deuterium was observed on the Ag/alumina catalyst. The reduction of NO with hydrogen gave N2 as the main product and N2O, NH3 and H2O as by-products, while the catalyst showed low activity for the self-decomposition of NO and N2O. To clarify the reaction mechanism for the reduction of NO with hydrogen parameter estimation and modeling was carried out.