Interaction of carbon monoxide with Cu–Pd and Cu–Ni bimetallic clusters

Interaction of CO with Cu–Pd and Cu–Ni bimetallic clusters deposited on a ZnO substrate has been investigated by core-level spectroscopy. The surface reactivity of both these alloy clusters increases with the decrease in cluster size, giving rise to dissociative adsorption at small cluster size. The...

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Bibliographic Details
Published inTopics in catalysis Vol. 11-12; no. 1-4; pp. 293 - 298
Main Authors Vinod, C P, Harikumar, K R, Kulkarni GU, Rao CNR
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.01.2000
Subjects
Adsorption
Bimetals
Clusters
Copper
Nickel
Palladium
Reactivity
Substrates
Surface chemistry
Zinc oxide
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Summary:Interaction of CO with Cu–Pd and Cu–Ni bimetallic clusters deposited on a ZnO substrate has been investigated by core-level spectroscopy. The surface reactivity of both these alloy clusters increases with the decrease in cluster size, giving rise to dissociative adsorption at small cluster size. The surface reactivity also increases with the increase in Pd or Ni content and the reactivity of the alloy clusters is unlike that of either component metal. Thus, dissociative adsorption occurs on small Cu–Pd clusters unlike on either Cu or Pd clusters of comparable size. The reactivity of the Cu–Ni clusters, on the other hand, falls somewhere between those of Cu and Ni clusters.
ISSN:1022-5528
1572-9028
DOI:10.1023/A:1027250520216