Počet záznamů: 1  

Role of Pt(0) in bimetallic (Pt,Fe)-FER catalysts in the N2O decomposition

  1. 1.
    SYSNO ASEP0379902
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevRole of Pt(0) in bimetallic (Pt,Fe)-FER catalysts in the N2O decomposition
    Tvůrce(i) Tabor, Edyta (UFCH-W) RID
    Jíša, Kamil (UFCH-W)
    Nováková, Jana (UFCH-W) RID
    Bastl, Zdeněk (UFCH-W) RID
    Vondrová, Alena (UFCH-W) RID
    Závěta, K. (CZ)
    Sobalík, Zdeněk (UFCH-W) RID
    Zdroj.dok.Microporous and Mesoporous Materials. - : Elsevier - ISSN 1387-1811
    Roč. 165, JAN 2013 (2013), s. 40-47
    Poč.str.8 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovabimetallic Pt,Fe-FER ; Pt-FER ; Pt(0) clusters
    Vědní obor RIVCF - Fyzikální chemie a teoretická chemie
    CEPGA203/09/1627 GA ČR - Grantová agentura ČR
    Institucionální podporaUFCH-W - RVO:61388955
    UT WOS000311070500007
    EID SCOPUS84865344606
    DOI10.1016/j.micromeso.2012.07.035
    AnotacePresence of metallic Pt clusters highly enhances catalytic activity of iron ferrierite in N2O decomposition, even at low Pt loading (Pt/Al > 0.003). Platinum (II) cations in ferrierite are inactive; only some low activity appears with pre-reduced samples. The behavior of bimetallic Pt,Fe-ferrierites samples is strongly dependent on the sequence of introduction of platinum and iron ions into the ferrierite. This sequence does not affect cationic state of iron ions, however, it changes the state of platinum: metallic Pt clusters are formed in samples where platinum was introduced as the first component. Formation of Pt(0) clusters has been assigned to reduction of Pt ions by the decomposing acetylacetone in solution used for the ion exchange of iron ions. The presence of Pt(0) in iron ferrierite samples changes the composition of the products of decomposition of the surface NOx species formed during the decomposition of nitrous oxide. It decreases the fraction of nitrogen dioxide and increases that of nitric oxide in the desorbing products.
    PracovištěÚstav fyzikální chemie J.Heyrovského
    KontaktMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Rok sběru2014