Density function theoretical and experimental study of NH3+ NO adsorptions on MnO /TiO2 surface

摘要: Abstract The adsorption of NO and NH 3 gaseous molecules on Mn O 4 /TiO 2 catalysts is studied based density function theory the corresponding experiments for low-temperature SCR x by ammonia. performances prepared joint precipitation method were systematically carried out in temperature range 90–300 °C. results show that nitrogen oxide can first adsorb manganese-terminal to form nitrates species, then are more inclined Bronsted acid sites. Bridging nitrate bidentate be turned into monodentate nitrates, + was formed when there ammonia water because dissociation surface catalyst main source hydroxyl groups. It indicated L-H mechanism plays a major role -SCR process.