The results of the reaction of selective reduction of NOx by C3H6 on the catalyst Cu/ZSM-5 with the presence of oxygen shown that there was a monotone relation between conversion degree of NOx and the amount of chemically adsorbed NOx [1]. Besides, the existence of amount of irreversiblely adsorbed C3H6 (C3H6ir) on the surface of catalyst Cu/ZSM-5 was detected [2]. The results of the role of C3H6irr towards reduction activity NOx in the studied reaction is presented in this article.
