间溴苯甲酸在Pt电极上的电氧化反应

doi:10.3866/PKU.WHXB201301101

Abstract

Abstract:

Electrochemical oxidation of 3-bromobenzoic acid (3-BBA) on a Pt electrode in alkali solution was studied by cyclic voltammetry and in situ Fourier transform infrared (FTIR) spectroscopy. The Pt electrode exhibited good performance for the electrooxidation of 3-BBA. At low oxidation potential (1000 mV), one electron was removed from the 3-BBA radical anion and the corresponding free radical was generated. A Bbromobenzene free radical cation and carbon dioxide were obtained after decarboxylation. The bromobenzene cation was then attacked by the hydroxyl radical, which was adsorbed on the anode, and the bromobenzene cation intermediate product was debrominated to form phenol. When the potential shifted to more positive values, phenol was electrooxided to produce dihydroxybenzene and benzoquinone. Maleic acid and fumaric acid were also detected as the reaction products of the ring-opening reaction.

Key words: 3-Bromobenzoic acid, In situ Fourier transform infrared spectroscopy, Electrooxidation, Decarboxylation reaction, Debromination reaction

YE Yong-Wei, WANG Xi, ZHENG Wan-Fang, LI Mei-Chao, MA Chun-An. Electrooxidation Reaction of 3-Bromobenzoic Acid on Pt Electrode[J]. Acta Phys. -Chim. Sin. 2013, 29(03), 553-558. doi: 10.3866/PKU.WHXB201301101

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Electrooxidation Reaction of 3-Bromobenzoic Acid on Pt Electrode

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