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The influence of the oxygen induced surface reconstructions on the CO 2 production rate at the Ag(110)-O system will be discussed, based on titration, reactive thermal desorption and LEED measurements. We present evidence that the reactivity of oxygen is reduced in the temperature range of 190-250 K by embedding oxygen in a reconstructed surface as compared to chemisorbed oxygen; above 250...
By application of reactive thermal desorption spectroscopy and the surface titration technique we found strong evidence for a direct reaction of CO with molecularly adsorbed oxygen on a Ag(110) surface forming CO 2 as the product. The reaction takes place between 100 and 130 K, clearly below the dissociation temperature of the oxygen molecule, and follows the Langmuir-Hinshelwood scheme.
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