The coadsorption of alkalis with CO and O on Cu(111) and Ni(111) was studied by vibrational measurements. Unexpectedly, we found an enhanced alkali oxidation rate for alkali + CO compared with alkali + O. Such finding was ascribed to the short-range alkali-CO interaction which lowers the barrier for CO dissociation and favors a giant alkali oxidation. Surprisingly, no alkali-O bond was formed for O/alkalis.
Mechanisms leading to alkali oxidation on metal surfaces
FORMOSO, Vincenzo;CHIARELLO, Gennaro
2008-01-01
Abstract
The coadsorption of alkalis with CO and O on Cu(111) and Ni(111) was studied by vibrational measurements. Unexpectedly, we found an enhanced alkali oxidation rate for alkali + CO compared with alkali + O. Such finding was ascribed to the short-range alkali-CO interaction which lowers the barrier for CO dissociation and favors a giant alkali oxidation. Surprisingly, no alkali-O bond was formed for O/alkalis.File in questo prodotto:
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