PREPARATION OF BIMETALLICPtnPdmSUPPORTED CLUSTERS WITH WELL-DEFINED STOICHIOMETRY

J.L. Rousset, A.M. Cadrot, F. Santos Aires, A. Renouprez, P. Mélinon, A. Perez, M. Pellarin, J.L. Vialle and M. Broyer
Additional contact information
J.L. Rousset: Institut de Recherches sur la Catalyse-CNRS, 2 Av. Albert Einstein, 69626 Villeurbanne, Cedex, France
A.M. Cadrot: Institut de Recherches sur la Catalyse-CNRS, 2 Av. Albert Einstein, 69626 Villeurbanne, Cedex, France
F. Santos Aires: Institut de Recherches sur la Catalyse-CNRS, 2 Av. Albert Einstein, 69626 Villeurbanne, Cedex, France
A. Renouprez: Institut de Recherches sur la Catalyse-CNRS, 2 Av. Albert Einstein, 69626 Villeurbanne, Cedex, France
P. Mélinon: Département de Physique des Mateŕiaux, Université Claude Bernard Lyon I, 43 Bd du 11 nov 1918, 69622 Villeurbanne, Cedex, France
A. Perez: Département de Physique des Mateŕiaux, Université Claude Bernard Lyon I, 43 Bd du 11 nov 1918, 69622 Villeurbanne, Cedex, France
M. Pellarin: Laboratoire de Spectrométrie Ionique et Moléculaire, Université Claude Bernard Lyon I, 43 Bd du 11 nov 1918, 69622 Villeurbanne, Cedex, France
J.L. Vialle: Laboratoire de Spectrométrie Ionique et Moléculaire, Université Claude Bernard Lyon I, 43 Bd du 11 nov 1918, 69622 Villeurbanne, Cedex, France
M. Broyer: Laboratoire de Spectrométrie Ionique et Moléculaire, Université Claude Bernard Lyon I, 43 Bd du 11 nov 1918, 69622 Villeurbanne, Cedex, France

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 1171-1176

Abstract: Supported bimetallic Pd-Pt clusters with a well-defined stoichiometry are produced using a laser-vaporization source. Free clusters are also studied by time-of-flight mass spectrometry and photofragmentation. The supported clusters are characterized by energy dispersive x-ray analysis. The low binding energy of palladium atoms compared to that of platinum is clearly demonstrated in both free and supported clusters. The reactivity is briefly discussed.

Date: 1996
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DOI: 10.1142/S0218625X96002102

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