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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 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název FTIR in situ mechanistic study of the NH3-NO/NO2 "Fast SCR" reaction over a commercial Fe-ZSM-5 catalyst Tvůrce(i) Ruggeri, M. P. (IT)
Grossale, A. (IT)
Nova, I. (IT)
Tronconi, E. (IT)
Jirglová, Hana (UFCH-W) RID, ORCID
Sobalík, Zdeněk (UFCH-W) RIDZdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 184, č. 1 (2012), s. 107-114Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova urea/NH3 SCR ; fast SCR ; NO2 adsorption Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP KAN100400702 GA AV ČR - Akademie věd GA203/09/1627 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000303108100012 DOI https://doi.org/10.1016/j.cattod.2011.10.036 Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2013
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