Abstract
Abstract : The catalytic activity and selectivity of many oxide catalysts can be varied by controlling the oxidation state of the surface oxide. The development of techniques to control and to measure the surface oxidation state (or states) would make possible novel catalysts with enhanced activity and/or dual site catalysts with unique selectivity properties. Two methods of controlling the surface states are investigated. (a) The dispersion of the active catalysts on an inactive support will be varied in hopes that the stable oxidation state at given ambient conditions will be influenced by the degree of dispersion of the catalysts. (b) Reactions at electrode surfaces will be studied in hopes that controlled potentials applied to the electrode will influence the oxidation state of the surface sites. The following report divided into three sections: Catalytic Studies, Characterization of Surface States by Electron Spectroscopy (especially x ray photoelectron spectroscopy), and Electrode Reaction Studies.
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