Catalytic reduction of nitrogen oxides2. The reduction of NO2

Abstract The selective catalytic reduction of NO2 with NH3 has been studied over a V2O5/SiO-TiO2 catalyst. The activity for the main reaction was measured between 420 and 670 K. Also reported are activities for the decomposition of NO2 to NO and O2 and the influence of O2 in that reaction. The reaction system NO2-O2-NH3 in N2 has been investigated in detail and activities in single as well as composed reaction media are reported.