| Cu/C-Nafion复合电极上硝基苯的电化学还原 |
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| 引用本文： | 江军华,陈岚,吴秉亮,翟润生. Cu/C-Nafion复合电极上硝基苯的电化学还原[J]. 物理化学学报, 1998, 14(8): 704-708. DOI: 10.3866/PKU.WHXB19980807 |
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| 作者姓名： | 江军华 陈岚 吴秉亮 翟润生 |
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| 作者单位： | Chemistry Department,Wuhan University,Wuhan 430072,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023 |
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| 摘 要： | 制备性电解的结果表明，硝基苯在Cu／C－Nafion膜复合电极上的还原产物只有苯胺，可能与电极／Nafion界面的弱酸性环境和其还原中间产物本羟胺在界面的扩散较仅有关．生成苯胺的电流效率随电流密度的增大而减小，随反应液中硝基苯浓度的增大出现一个最大值．这可能是硝基苯的电化学还原过程受某种粒子的扩散控制、峰电流取决于硝基苯在Nafion膜中的溶解度所致．
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| 关 键 词： | 固体聚合物电解质 Nafion膜 电化学还原 硝基苯 苯胺 |
| 收稿时间： | 1997-11-10 |
| 修稿时间： | 1998-01-12 |
Electrochemical Reduction of Nitrobenzene on the Cu/C-Nafion Composite Electrode |
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| Jiang Junhua, Chen Lan, Wu Bingliang, Zhai Runsheng. Electrochemical Reduction of Nitrobenzene on the Cu/C-Nafion Composite Electrode[J]. Acta Physico-Chimica Sinica, 1998, 14(8): 704-708. DOI: 10.3866/PKU.WHXB19980807 |
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| Authors: | Jiang Junhua Chen Lan Wu Bingliang Zhai Runsheng |
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| Affiliation: | Chemistry Department,Wuhan University,Wuhan 430072|Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023 |
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| Abstract: | The electrochemical reduction of nitrobenzene on the Cu/C-Nafion composite electrodewas investigated. The reduction product was only aniline. The high selectivity was related to theweak acid medium at the electrode/Nafion interface and the slow diffusion of intermediates in thementhrane. The electrochemical process was controlled by the diffusion of some species, the currelltefficiency for aniline decreased with the current density and was dependent upon the dissolutionof nitrobenzene in the membrane. |
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| Keywords: | Solid polymer electrolyte Nafion membrane Electrochemical reduction Nitrobenzene Aniline |
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