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Reactivity and transformation routes of surface nitrates in the reaction of NOx reduction by C3H8 over cation-exchanged zeolites |
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| Authors: | V. A. Sadykov E. A. Paukshtis S. A. Beloshapkin G. M. Alikina S. A. Veniaminov E. V. Netyaga R. V. Bunina E. V. Lunina A. N. Kharlanov V. V. Lunin V. A. Matyshak A. Ya. Rozovskii |
| Affiliation: | (1) Federal Scientific Center, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia;(2) Novosibirsk State University, 630090 Novosibirsk, Russia;(3) Chemical Department, Lomonosov Moscow State University, 119899 Moscow, Russia;(4) Semenov Institute of Chemical Physics RAN, 117334 Moscow, Russia;(5) Topchiev Institute of Petrochemical Synthesis RAN, 117912 Moscow, Russia |
| Abstract: | FITRS combined with15N and18O isotope substitution and TPD have revealed that nitrates are the most abundant ad-NOx species on over-exchanged Cu- and Co-ZSM-5 zeolites. the transformation rates of such species under the action of a propane—oxygen mixture were found to be comparable and sufficiently high to afford steady-state catalytic activities. A scheme of the reaction mechanism including C, N-containing intermediates detected in work is suggested. |
| Keywords: | Nitrogen oxides selective reduction propane ZSM-5 copper and cobalt cations surface nitrates structure and reactivity |
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