Reaction between NOx and NH3 on Iron Oxide-Titanium Oxide Catalyst

Article abstract of DOI:10.1021/j150626a029

The reduction of NO_x (NO2 alone or mixture of NO and NO2) with NH3 on iron oxide-titanium oxide catalyst was studied using a flow reactor.The reaction between NO2 and NH3 proceeds at 3:4 mole ratio in the presence or absence of oxygen.When the reaction gas mixture contain equal amounts of NO and NO2, the reaction consuming equimolal NO and NO2 proceeds preferentially at a NH3/NO_x ratio of unity.The rate of the reaction is faster than either the NO-NH3 or NO2-NH3 reaction.The overall reactions between NO_x (NO2, NO+NO2) and NH3 are given as 6NO2+8NH3->7N2+12H2O and NO+NO2+2NH3->2N2+3H2O.Reaction mechanisms are proposed to explain the experimental results.