Systematic mechanism study of the high temperature SCR of NOX by NH3 over a W/TiO2 catalyst

► The high temperature SCR model using W/TiO2 catalyst follows the E-R model. ► The initial step is the absorption of ammonia on the W=O sites. ► The adsorbed ammonia reacts with gaseous NO and O2. ► The participation of moisture and lattice oxygen on the reaction slightly affected.