The adsorption and decomposition of carbon monoxide on Ni(100) and the oxidation of the surface carbide by oxygen

Enrico G. Keim, F. Labohm, O.L.J. Gijzeman, G.A. Bootsma, J.W. Geus

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Abstract

The interaction of carbon monoxide with Ni(100) has been studied by ellipsometry and Auger electron spectroscopy. Bombardment by electrons of a relatively high energy (2500 eV) leads to the disproportionation of the adsorbed CO (2 COad → Cad + CO2g ). The rate of oxidation of this surface carbide is , where hc is the carbon 272 eV Auger peak height, n=0.5 and the apparent activation energy Eact =13.3 kcal/mole. This relation is valid at 200–400°C and at oxygen pressures of 5 × 10−9−8 × 10−7 Torr.
Original languageUndefined
Pages (from-to)52-62
JournalSurface science
Volume112
Issue number1-2
DOIs
Publication statusPublished - 1981

Keywords

  • IR-90662

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