Počet záznamů: 1  

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
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevFTIR 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
    Sobalík, Zdeněk (UFCH-W) RID
    Zdroj.dok.Catalysis Today. - : Elsevier - ISSN 0920-5861
    Roč. 184, č. 1 (2012), s. 107-114
    Poč.str.8 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovaurea/NH3 SCR ; fast SCR ; NO2 adsorption
    Vědní obor RIVCF - Fyzikální chemie a teoretická chemie
    CEPKAN100400702 GA AV ČR - Akademie věd
    GA203/09/1627 GA ČR - Grantová agentura ČR
    CEZAV0Z40400503 - UFCH-W (2005-2011)
    UT WOS000303108100012
    DOI10.1016/j.cattod.2011.10.036
    AnotaceNew 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.
    PracovištěÚstav fyzikální chemie J.Heyrovského
    KontaktMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Rok sběru2013