ELECTROCATALYSIS BY AD-ATOMS .14. OXIDATION OF 1,3-DIOXOLANE BY OXYGEN-ADSORBING AD-ATOMS AND S-HOLE CONTROL OF SITE ARRANGEMENT BY AD-ATOMS

The oxidation of dioxolane was examined on electrodes modified by ad-atoms Ru, Cu, Ag, Tl, Hg, Ge, Sn, Pb, As, Sb, Bi, S, Se and Te. The feature of the enhancement of dioxolane oxidation by ad-atoms was found to be quite similar to that of formaldehyde and acetaldehyde oxidation, although dioxolane is partially oxidized to carbon dioxide and ethylene glycol. The oxidation was enhanced strikingly by oxygen-adsorbing ad-atoms and by non-oxygen-adsorbing ad-atoms but to a lesser extent. The catalytic activity by the latter ad-atoms depends on their S//M (the number of Pt sites occupied by an ad-atom); the greater the value of S//M the greater the enhancement effect. It is concluded that this partial oxidation is enhanced by oxygen-adsorbing ad-atoms and S//h//o//l//e control of site arrangement by ad-atoms, as was the oxidation of formaldehyde and acetaldehyde.