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Works both ways: phenol was produced by both anodic and cathodic benzene oxidations over the V(x)O(y)-Sn(0.9)In(0.1)P(2)O(7) electrode in an electrochemical cell, thus allowing the use of AC electrolysis for phenol production. AC electrolysis was found to be more efficient and selective toward phenol production than DC electrolysis.
Lee et al. (Fri,) studied this question.