Abstract
Surface analysis conducted under ultrahigh vacuum conditions shows that the oxidation of a B‒Mo(110) alloy with a submonolayer concentration of boron atoms dramatically improves the efficiency of conversion of co-adsorbed carbon monoxide and oxygen molecules to carbon dioxide. It is established that this effect is associated with differences between the properties of the adsorbed particles before and after molybdenum boride oxidation, particularly an increase in the slope of the CO molecular axis to the plane of the adsorbent surface and the weakening of the chemisorptive bonds of oxygen with the substrate on the surface of the MoxByOz ternary compound. It is concluded that this substrate can be considered a model system and an alternative to the currently available catalysts for CO oxidation based on noble metals.
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