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The role of adatom geometry in the strength and range of catalyst poisoning

Authors
Journal
Surface Science Letters
0167-2584
Publisher
Elsevier
Publication Date
Volume
165
Identifiers
DOI: 10.1016/0167-2584(86)91177-1

Abstract

Abstract The strength and range of the poisoning of carbon monoxide adsorption on a nickel (100) surface by carbon and sulphur has been studied using a multiple scattering calculation. A carbon adatom only significantly affects the nickel density of states on nearest neighbour sites whereas sulphur also poisons the next nearest neighbours. This is largely due, not to the more covalent nature of carbon but to its closer approach to the nickel surface.

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