P-Tu-B-129 The Rate Determining Step for the Selective Catalytic Reduction of NO By Ammonia

Tuesday, June 16, 2015
Ballroom B (Lawrence Convention Center)
Ton V.W. Janssens1, Hanne Falsig1, Lars F. Lundegaard1, Poul Georg Moses1, Peter N.R. Vennestr�m1, S�ren B. Rasmussen1, Filippo Giordanino2, Elisa Borfecchia2, Kirill A. Lomachenko2,3, Lamberti Carlo2,3, Silvia Bordiga2, Anita Godiksen4, Susanne L. Mossin4 and Pablo Beato1, (1)Haldor Topsoe A/S, Denmark, (2)University of Turin, Italy, (3)Southern Federal University, Russia, (4)Technical University of Denmark, .
Based on a new reaction scheme for NH3-SCR, we show that the rate determining step is the activation of NO by oxygen to a nitrate species, and that this is not in contradiction to a very low rate for NO oxidation to NO2 in the absence of ammonia. 

Extended Abstracts: