In situ FTIR Studies on Electrochemical Debromination Reaction of 2-Bromobenzoic Acid

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (1): 129.

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In situ FTIR Studies on Electrochemical Debromination Reaction of 2-Bromobenzoic Acid

LI Mei-Chao, BAO Dan-Dan, MA Chun-An*

Research Center of Analysis and Measurement, College of Chemical Engineering and Material Science, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China

Received:2010-04-15 Revised:2010-08-25 Online:2011-01-10 Published:2010-12-11
Contact: MA Chun-An E-mail:science@zjut.edu.cn
Supported by:
国家“九七三”前期研究专项课题(批准号: 2003CCA01300)和浙江省自然科学基金(批准号: Y410064)资助.

Abstract

Abstract: The electrocatalytic reductive debromination of 2-bromobenzoic acid in aqueous solution on titanium, graphite and copper electrode was investigated by using cyclic voltammogram. Compared with titanium and graphite, copper electrode exhibited a high electrocatalytic activity for the reduction process of 2-bromobenzoic acid. Further studies by in situ FTIR suggested that the mechanism of the reaction was electrochemical hydrodebromination process. 2-bromobenzoic acid was electroreduced to its free radical ion initially after receiving an electron. Then the free radical ion was further debrominated to produce benzoic acid free radical at the more negative potential. Finally, benzoic acid was obtained by receiving another electron and H+, which has been further confirmed by constant current electrolysis experiments.

Key words: 2-bromobenzoic acid, Cu electrode, electrochemical debromination, in situ FTIR

TrendMD:

LI Mei-Chao, BAO Dan-Dan, MA Chun-An*. In situ FTIR Studies on Electrochemical Debromination Reaction of 2-Bromobenzoic Acid[J]. Chem. J. Chinese Universities, 2011, 32(1): 129.

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In situ FTIR Studies on Electrochemical Debromination Reaction of 2-Bromobenzoic Acid

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