CIESC Journal ›› 2009, Vol. 60 ›› Issue (1): 199-203.
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MA Chun’an,LIU Yanna,LI Meichao,YE Hui
Online:
Published:
马淳安,刘艳娜,李美超,叶慧
Abstract:
Electrochemical reduction of 4-chlorophenol (4-CP) in basic solution was investigated by using cyclic voltammetry and in situ FTIR.The results of cyclic voltammograms showed that Ag electrode exhibited good performance for the electro-reduction of 4-CP and the reduction reaction could take place at a more positive potential.The study on possible mechanism of 4-CP on Ag electrode by in situ FTIR spectroscopy suggested that 4-CP was electro-reduced to its radical ion initially, then its radical ion was transformed to phenolate at a more negative potential and electrochemical dechlorination of 4-CP was realized.
Key words: 对氯苯酚, 银电极, 原位红外光谱技术, 电还原
对氯苯酚,
摘要:
采用循环伏安和原位红外光谱技术,研究了对氯苯酚(4-CP)在碱性体系中的电化学还原反应。对氯苯酚在Ag电极、Pt电极和GC电极上的循环伏安行为表明,Ag电极对4-CP有较好的电还原活性,能在较正的电位下还原4-CP。通过原位红外光谱技术对4-CP在Ag电极上的电还原机理的初步探讨,结果表明4-CP首先在电极表面形成自由基负离子,随着电位的进一步负移,生成苯酚负离子,从而实现4-CP电化学脱氯降解的目标。
关键词: 对氯苯酚, 银电极, 原位红外光谱技术, 电还原
MA Chun’an, LIU Yanna, LI Meichao, YE Hui. In situ FTIR studies on electroreduction of 4-chlorophenol in basic solution[J]. CIESC Journal, 2009, 60(1): 199-203.
马淳安, 刘艳娜, 李美超, 叶慧. 原位红外光谱法研究碱性溶液中对氯苯酚电还原反应 [J]. 化工学报, 2009, 60(1): 199-203.
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