Dependence of the reactivity of Ag and Ni clusters deposited on solid substrates on the cluster size

Autor:	Menno Willem Jose Prins, V. Vijayakrishnan, C. N. Ramachandra Rao, A.K. Santra
Přispěvatelé:	Molecular Biosensing for Med. Diagnostics
Jazyk:	angličtina
Rok vydání:	1992
Předmět:	Stereochemistry Metallicity chemistry.chemical_element General Medicine General Chemistry Catalysis Crystallography Nickel chemistry Cluster size Mathematics::Metric Geometry Condensed Matter::Strongly Correlated Electrons Reactivity (chemistry) Metal clusters
Zdroj:	Angewandte Chemie-International Edition, 31(8), 1062-1064. Wiley
ISSN:	0570-0833
DOI:	10.1002/anie.199210621
Popis:	Bulk silver and nickel are less reactive than small clusters of these elements, as reactivity studies with O2 as well as with H2S and CO prove. The dissociation of O2 on small Ag clusters is favored, and the proportion of O2 molecules cleaved does not depend upon temperature, as is the case for larger clusters and silver metal. The change in reactivity is greatest at the metal–insulator transition—a finding that has implications for heterogeneous catalysis.
Databáze:	OpenAIRE
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