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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 ASEP0376983
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleFTIR 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
    Sobalík, Zdeněk (UFCH-W) RID
    Source TitleCatalysis Today. - : Elsevier - ISSN 0920-5861
    Roč. 184, č. 1 (2012), s. 107-114
    Number of pages8 s.
    Languageeng - English
    CountryNL - Netherlands
    Keywordsurea/NH3 SCR ; fast SCR ; NO2 adsorption
    Subject RIVCF - Physical ; Theoretical Chemistry
    R&D ProjectsKAN100400702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    GA203/09/1627 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z40400503 - UFCH-W (2005-2011)
    UT WOS000303108100012
    DOI10.1016/j.cattod.2011.10.036
    AnnotationNew 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.
    WorkplaceJ. Heyrovsky Institute of Physical Chemistry
    ContactMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Year of Publishing2013
Number of the records: 1