| 硝基苯在离子液体BMimBF4-H2O中的电还原 |
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| 引用本文： | 马淳安,陈松,褚有群,毛信表.硝基苯在离子液体BMimBF4-H2O中的电还原[J].物理化学学报,2007,23(4):575-580. |
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| 作者姓名： | 马淳安 陈松 褚有群 毛信表 |
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| 作者单位： | State Key Laboratory of Green Chemistry Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, P. R. China; Yancheng Institute of Technology, Yancheng 224002, Jiangsu Province, P. R. China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | 采用循环伏安法和恒电位电解法研究了离子液体BMimBF4-H2O 中硝基苯在微铂电极上的电还原特性. 实验表明, 在BMimBF4中, 随着硝基苯和水的浓度变化, 循环伏安曲线的峰电位和峰电流呈现复杂的变化规律; 硝基苯在铂电极上的电还原反应为双分子8 电子3 步骤电化学过程, 第一步反应为准可逆单分子单电子转移步骤, 产生阴离子自由基, 第二步为2 电子转移步骤, 并伴有随后的双分子不可逆自由基偶合化学反应, 主要产物为氧化偶氮苯, 第三步是2 电子转移产生偶氮苯的过程.
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| 关 键 词： | 硝基苯 离子液体 水 电还原 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2006-09-14 |
Electrochemical Reduction of Nitrobenzene in Ionic Liquid BMimBF4-H2O |
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| MA Chun-An,CHEN Song,CHU You-Qun,MAO Xin-Biao.Electrochemical Reduction of Nitrobenzene in Ionic Liquid BMimBF4-H2O[J].Acta Physico-Chimica Sinica,2007,23(4):575-580. |
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| Authors: | MA Chun-An CHEN Song CHU You-Qun MAO Xin-Biao |
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| Institution: | State Key Laboratory of Green Chemistry Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, P. R. China; Yancheng Institute of Technology, Yancheng 224002, Jiangsu Province, P. R. China |
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| Abstract: | Nitrobenzene was electroreduced to azobenzene in ionic liquid BMimBF_4-H_2O on Pt electrode at room temperature. The concentrations of nitrobenzene and water in BMimBF_4 had complicated influence on the peak potential and peak current of cyclic voltammogram. The results from cyclic voltammetry and constant-potential electrolysis experiments showed that the reaction was a two-molecule and three-step electrochemical process with 8 electrons transferred. In the reaction, anion radical arose in first step, 2 electrons were transferred in second step and accompanied with coupling reaction of radicals, 2 electrons were transferred in third step, and azobenzene was produced. |
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| Keywords: | Nitrobenzene Ionic liquid Water Electroreduction |
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