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The relation between catalytic and electronic properties of supported platinum catalysts: the local density of states as determined by x-ray absorption spectroscopy

  • M. Vaarkamp
  • , J.T. Miller
  • , F.S. Modica
  • , G.S. Lane
  • , D.C. Koningsberger

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

    Samenvatting

    The intensity of the white line of the LII and LIII x-ray absorption edge spectra of small platinum particles increases with decreasing particle size. The combined white line intensity of the LII and LIII x-ray absorption spectra for platinum catalysts with comparable av. particle size is higher when dispersed on acidic than on neutral supports. This indicates that Pt particles are more electron deficient on acidic than on neutral supports. The propane hydrogenolysis TOF for Pt supported on g-Al2O3 or H-LTL is more than an order of magnitude higher than for Pt supported on a nonacidic K-LTL zeolite. The differences in catalytic behavior are related to differences in the d-band d. of states. [on SciFinder (R)]
    Originele taal-2Engels
    TitelNew Frontiers in Catalysis : Proceedings of the 10th International Congress on Catalysis, Budapest, July 19 - 24, 1992. Part A
    RedacteurenL. Guczi, F. Solymosi, P. Tétényi
    Plaats van productieAmsterdam
    UitgeverijElsevier
    Pagina's809-820
    ISBN van geprinte versie0-444-89621-X
    DOI's
    StatusGepubliceerd - 1993
    Evenement10th International Congress on Catalysis (ICC 1992) - Budapest, Hongarije
    Duur: 19 jul. 199224 jul. 1992
    Congresnummer: 10

    Publicatie series

    NaamStudies in Surface Science and Catalysis
    NummerPart A
    Volume75
    ISSN van geprinte versie0167-2991

    Congres

    Congres10th International Congress on Catalysis (ICC 1992)
    Verkorte titelICC 1992
    Land/RegioHongarije
    StadBudapest
    Periode19/07/9224/07/92
    AnderInternational Congress on Catalysis ; 10 (Budapest) : 1992.07.19-24

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