A kinetic model of standard selective catalytic reduction of NO by NH3 on two sites
Artikel i vetenskaplig tidskrift, 2011

Reduction of NO by NH(3) in the presence of O(2) may occur on single Fe or Cu atoms or dimers incorporated into the inner walls of zeolite. One of the likely schemes of this reaction implies the formation of N(2) and H(2)O through the reaction of gas-phase NO and adsorbed NH(3). The steady-state kinetics corresponding to this scheme was recently analyzed by the author assuming that the reaction runs on single metal atoms. In this work, the author presents a model including two metal atoms. Under the practically important conditions, the kinetics predicted by the one- and two-site models are demonstrated to be similar. In particular, both models allow one to interpret the apparent reaction orders observed experimentally.

Catalytic sites

H(2)O

Surface chemical reactions

n2o decomposition

fe-zsm-5

nitric-oxide

ammonia

O(2)

Kinetics

NO

N(2)

NH(3)

Reaction orders

oxygen

Författare

Vladimir Zhdanov

Kompetenscentrum katalys (KCK)

Chalmers, Teknisk fysik, Kemisk fysik

Reaction Kinetics, Mechanisms and Catalysis

1878-5190 (ISSN)

Vol. 104 2 267-272

Ämneskategorier

Kemi

DOI

10.1007/s11144-011-0353-9