Electrochemical dechlorination of chlorobenzene with a mediator on various metal electrodes

Dechlorination of chlorobenzene has been studied in acetonitrile on metal electrodes (Pt, Cd, Sn, In, Pb, Zn, Ag) using naphthalene as a mediator. Voltammograms of the metal electrodes, except Pt, give redox peaks at −2.94 V (Ag∣Ag+) in the solution containing 10 mM of naphthalene. The cathodic peak at −2.94 V is enhanced with an increase of the concentration of chlorobenzene, evidence that chlorobenzene is also reduced at this potential. The...