The effect of electrolysis potential on the maximum current of anodic electrooxidation of the vanadium deposit is studied at a graphite electrode in 0. 1 M NH//4Cl solutions of different pH (7. 70, 8. 45, 8. 85) under conditions where the VO//3** minus undergo reduction to V//2O//3(s) and V//2O//2(s). Transfer coefficients were calculated for the reduction of VO//3** minus to V//2O//3(s) ( alpha //1 equals 0. 16 plus or minus 0. 01) and of VO//3** minus to V//2O//2(s) ( alpha //2 equals 0. 14 plus or minus 0. 02). A semiempirical equation is proposed which describes the experimental relation between maximum current of anodic electrooxidation of oxide V//2O//3 and the electrolysis potential at different pH, and allows for the probable mechanism of vanadium(V) electroreduction under the conditions studied.
|Number of pages||5|
|Publication status||Published - Jan 1985|
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