L. Mei
2011
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Journal
Chemical Journal of Chinese Universities-chinese
Abstract
The electrocatalytic reductive debromination has been extensively investigated as a technology for the detoxification and disposal of organic halides in industrial effluents.Cyclic voltammetry and in situ FTIR were employed to study the electrochemical hydrodebromination mechanism of 2-bromobenzoic acid in alkaline solution.The electrocatalytic reductive debromination of 2-bromobenzoic acid in aqueous solution on titanium,graphite and copper electrode was investigated by cyclic voltammogram.Compared with titanium and graphite electrodes,copper electrode exhibited a high electrocatalytic activity for the reductive reaction of 2-bromobenzoic acid.In situ FTIR result suggested that the mechanism of the reaction was electrochemical hydrodebromination process.2-Bromobenzoic acid was electroreduced to its free radical ion after receiving an electron firstly.Then the free radical ion was further debrominated to produce benzoic acid free radical at more negative potential.After receiving another electron and proton,benzoic acid was obtained,which had been confirmed by constant current electrolysis experiments.