Nature of Active Sites of Fe-Beta Catalyst for NOx-SCR by NH3

D. E. Doronkin, A. Yu. Stakheev, A. V. Kucherov, N. N. Tolkachev, M. Kustova, Martin Høj, G. N. Baeva, G. O. Bragina, P. Gabrielsson, I. Gekas, S. Dahl

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A correlation of the reaction rate over Fe-Beta catalysts with a concentration of specific isolated Fe3+ sites represented by an ESR signal at g ≈ 4.3 and by UV adsorption bands with λmax <300 nm was observed. Blocking zeolite cationic positions with Ca2+ and investigation of “Fe-free” Beta-zeolites confirmed the idea of isolated Fe complexes in cationic positions being active sites for NH3-deNOx.
Keyword: Fe-Beta,UV-Vis,SCR,Iron zeolite,ESR,deNOx
Original languageEnglish
JournalTopics in Catalysis
Volume52
Pages (from-to)1728-1733
ISSN1022-5528
DOIs
Publication statusPublished - 2009
Externally publishedYes

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