15N NMR Studies of the NO-NH3-O2 Reaction over ZSM-5 Type Zeolites and Vanadia Supported Catalysts
Reaction Kinetics and Catalysis Letters
, E-ISSN: 1588-2837
Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
Russian Foundation for Basic Research
15N nuclear magnetic resonance spectra produced by adsorption of NO together with O2 and NH3 on H-ZSM-5 and V2O5/Al2O3 catalysts have been examined. Several surface species and reaction intermediates have been identified by their characteristic 15N NMR spectra. The intermediate complexes between the products of disproportionation and partial oxidation of NO, on one hand, and ammonia, on the other hand, were found to be formed in the reaction. On V2O5/Al2O3 catalyst the reaction proceeds more rapidly compared with ZSM-5 but some details of the mechanism are similar for both catalysts.