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FTIR in situ mechanistic study of the NH3-NO/NO2 "Fast SCR" reaction over a commercial Fe-ZSM-5 catalyst
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SYSNO ASEP 0376983 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title FTIR in situ mechanistic study of the NH3-NO/NO2 "Fast SCR" reaction over a commercial Fe-ZSM-5 catalyst Author(s) Ruggeri, M. P. (IT)
Grossale, A. (IT)
Nova, I. (IT)
Tronconi, E. (IT)
Jirglová, Hana (UFCH-W) RID, ORCID
Sobalík, Zdeněk (UFCH-W) RIDSource Title Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 184, č. 1 (2012), s. 107-114Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords urea/NH3 SCR ; fast SCR ; NO2 adsorption Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN100400702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA203/09/1627 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000303108100012 DOI https://doi.org/10.1016/j.cattod.2011.10.036 Annotation New insight in the mechanism of the so-called "Fast SCR" reaction over a commercial Fe zeolite catalyst was gained by an in situ FTIR investigation of the evolution of the surface intermediates during step response runs addressing the adsorption of NO2, as well as the reactivity of surface NOx with NH3 and with NO. The collected data, combined with the analysis of companion transient flow reactor experiments demonstrating the corresponding dynamics of gaseous reactants and products, confirm the key role of ferric nitrites/nitrates in the reaction pathway, and emphasize the cooperative interaction between the zeolite acidic sites, where ammonia is stored, and the Fe red-ox sites of the catalyst, which are involved in the critical reduction of surface nitrates by NO. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2013
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