Electrochemical oxidation of benzene at a glassy carbon electrode |
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Authors: | K-W Kim M Kuppuswamy RF Savinell |
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Affiliation: | (1) Korea Atomic Energy Research Institute, Yusong, PO Box 105, Taejeon, 305-600, Korea;(2) Ernest B. Yeager Center for Electrochemical Sciences and Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA |
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Abstract: | Benzene oxidation in sulfuric acid at a glassy carbon electrode was investigated using voltammetric, chronoamperometric, and spectroscopic methods. The results are compared with those at a Pt electrode. Benzene was observed to be oxidized to benzoquinone presumably by active oxygen that was adsorbed on the GC electrode in the oxygen evolution region. It is concluded that oxidation at glassy carbon can produce benzoquinone or quinone-like compounds from an aqueous benzene solution. The applied potential for benzene oxidation should be less than 2.1 V vs RHE in order to prevent glassy carbon electrode damage by oxidation during long operation. |
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Keywords: | benzene oxidation glassy carbon electrode |
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