Abstract
Stable surface complexes formed by the interaction of methanol, ethanol, water, and diethyl ether with a nickel surface at 20 °C were investigated. Exposure of the nickel surface to methanol gives infrared bands for surface species at 2040 and 1900 cm −1. These bands are attributed to chemisorbed CO. Ethanol produced bands for surface species near 2960 cm −1 and 2030 and 1850 cm −1. These bands are interpreted as indicating that ethanol decomposes on the clean surface to give chemisorbed CO and a hydrocarbon residue. H 2O and diethyl ether produced no detectable surface species and did not poison the surface to CO chemisorption. Surface compounds formed by the interaction of CO and H 2 on nickel at temperatures up to 180 °C were looked for but not found even though products of the reaction of CO and H 2 were readily detected. In all cases studied the gases do not react with the silica support.
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