The Effect of Iron Doping on the Performance of Mn/TiO₂ Catalysts for NO Reduction with NH₃ at Low Temperature

Abstract

The catalysts of Mn/TiO2, Fe/TiO2and Mn-Fe/TiO2prepared by coprecipitation method were investigated for low temperature selective catalytic reduction of NO with NH3. The catalytic activity and SO2resistance of these three catalysts were tested and the properties of the catalysts were characterized by using N2-BET, XRD, H2-TPR, NH3-TPD methods. It was found that the doping of iron reduced the catalytic activity of Mn/TiO2catalyst at low temperature and also has an adverse effect for its SO2resistance at the same time. The decrease of surface area , redox ability and surface acid sites caused by doping of iron might be the main reasons for poor performance of this catalyst.

N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NOx with NH3

“…x -CeO 2 /TiO 2 , MnO x -FeO x / TiO 2 , and so on [7][8][9][10][11]. Because manganic oxides have a variety of different surface active oxygen, they can be used to complete the catalytic cycle.…”