Abstract: Edited by Roberts, M. W. A review with 84 references In this paper I pay special attention to the anal. of the chem. reactivity of metal clusters, which is the active component for different catalytic systems. Investigations devoted to the electronic and structural properties of small metal clusters will also be reviewed in brief. The data reviewed and, in particular, our investigation of the reasons for the catalytic action of silver in ethylene epoxidation, demonstrate that the chem. reactivity of metal clusters: (i) correlates with the activity and selectivity of the corresponding supported catalysts; (ii) can be explained using the data obtained on the corresponding bulk metals, both electronic and structural properties, as well as their variation with cluster size, having to be considered; and hence (iii) can serve as a bridge which connects surface-science studies with real catalysis. This all confirms the validity of the proposed approach linking surface science to real catalysis which, in the author's opinion, will be applied more and more widely to the design of new catalysts. This affirmation is based on the success of the Boreskov Institute of Catalysis in the synthesis of a new generation of silver catalysts which comprise silver particles with mean sizes of about 500 Å supported on a specially designed carbon support. Preliminary lab-scale testing of their catalytic properties shows that they exhibit a selectivity close to 90%.

Cite: Bukhtiyarov V.I.
Chemical Reactivity of Metal Clusters at Solid Surfaces
In compilation Interfacial Science (Chemistry for the 21st Century Monograph). – Blackwell Science., 1997. – C.109-127. – ISBN 9780632042197. ANCAN

Identifiers:

Chemical Abstracts:	1998:87084
Chemical Abstracts (print):	128:106809

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