A kinetic model of standard selective catalytic reduction of NO by NH3 on single sites
Journal article, 2011
Reduction of NO by NH3 in the presence of O-2 may occur on single Fe or Cu atoms or dimers incorporated into the inner walls of a zeolite. Although this process is of considerable intrinsic interest as an example of complex reactions running on single sites and is also important from the perspective of environmental chemistry, its mechanism is still open for debate. One of the likely schemes of the process implies the formation of N-2 and H2O via the reaction of gas-phase NO and adsorbed NH3. The author presents a detailed analysis of the steady-state kinetics corresponding to this scheme. The model employed includes eleven elementary steps. The results obtained allow one to interpret the apparent reaction orders observed experimentally.
oxygen
orders
ammonia
H2O
NH3
Single catalytic sites
Kinetics
NO
fe-zsm-5
Surface chemical reactions
n2o decomposition
Reaction
O-2
N-2
Author
Vladimir Zhdanov
Competence Centre for Catalysis (KCK)
Chalmers, Applied Physics, Chemical Physics
Reaction Kinetics, Mechanisms and Catalysis
1878-5190 (ISSN) 18785204 (eISSN)
Vol. 103 1 11-18Subject Categories
Chemical Sciences
DOI
10.1007/s11144-011-0285-4