Abstract
Usefulness of the concept of bi- or multifunctional catalysis in the catalyst design for the reduction of dilute nitrogen oxides by hydrocarbons in the presence of excess oxygen (so-called HC-SCR) is demonstrated. First, it is shown that the complex reaction of HC-SCR can be divided into (i) the oxidation of NO to NO 2 and (ii) the subsequent reactions between NO 2 and hydrocarbons. Further, two examples, where significant improvement of catalytic performance was obtained, based on the idea of bifunctional catalysis are presented: (a) NO-C 3H 6-O 2 catalyzed by mechanical mixtures of Mn 2O 3 and M-ZSM-5 (metal loaded ZSM-5), and (b) NO-CH 4-O 2 by Pd/H-ZSM-5 (Pd loaded H-ZSM-5).
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call