Počet záznamů: 1  

Metal Palladium Dispersed Inside Macroporous Ion-Exchange Resins: Textural Characterization and Accessibility to Gaseou Reactants

  1. 1.
    0166678 - UCHP-M 20020264 RIV NL eng J - Článek v odborném periodiku
    Biffis, A. - Jeřábek, Karel - D'Archivio, A. A. - Galantini, L. - Corain, B.
    Metal Palladium Dispersed Inside Macroporous Ion-Exchange Resins: Textural Characterization and Accessibility to Gaseou Reactants.
    Studies in Surface Science and Catalysis. Roč. 130, - (2000), s. 2327-2332. ISSN 0167-2991.
    [International Congress on Catalysis /12./. Granada, 09.07.2000-14.07.2000]
    Výzkumný záměr: CEZ:AV0Z4072921
    Klíčová slova: metal palladium * dispersed * ion-exchange resins
    Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
    Impakt faktor: 0.513, rok: 2000

    Commercial macroporous ion-exchange resins were used to support Pd metal by a two step ion-exchange and reduction procedure. The textural features of the resins under solid-liquid conditions were determined by means of ISEC, ESR nad PGSE-NMR measurements. TEM characterization of the obtained Pd/rwesin composite showed the presence of uniformly sized Pd crystallites located at the macropore "surface". Pulse chemisorption analysis gave evidence for the lack of accessibility of the crystallites when the resin composite is in the dry state, thus suggesting that the metal particles are in fact embedded in a dry gel-type resin layer at the "surfaceů of the macropores and therefore practically unaccessible to the molecules of a gaseous phase.
    Trvalý link: http://hdl.handle.net/11104/0063793