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

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    SYSNO ASEP0379902
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleRole of Pt(0) in bimetallic (Pt,Fe)-FER catalysts in the N2O decomposition
    Author(s) Tabor, Edyta (UFCH-W) RID, ORCID
    Jíša, Kamil (UFCH-W)
    Nováková, Jana (UFCH-W) RID
    Bastl, Zdeněk (UFCH-W) RID, ORCID
    Vondrová, Alena (UFCH-W) RID
    Závěta, K. (CZ)
    Sobalík, Zdeněk (UFCH-W) RID
    Source TitleMicroporous and Mesoporous Materials. - : Elsevier - ISSN 1387-1811
    Roč. 165, JAN 2013 (2013), s. 40-47
    Number of pages8 s.
    Languageeng - English
    CountryNL - Netherlands
    Keywordsbimetallic Pt,Fe-FER ; Pt-FER ; Pt(0) clusters
    Subject RIVCF - Physical ; Theoretical Chemistry
    R&D ProjectsGA203/09/1627 GA ČR - Czech Science Foundation (CSF)
    Institutional supportUFCH-W - RVO:61388955
    UT WOS000311070500007
    EID SCOPUS84865344606
    DOI10.1016/j.micromeso.2012.07.035
    AnnotationPresence 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.
    WorkplaceJ. Heyrovsky Institute of Physical Chemistry
    ContactMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Year of Publishing2014
Number of the records: 1