| 硝基苯在温和条件下的电化学还原 |
| 摘要点击 1330 全文点击 3838 投稿时间：2003-12-19 修订日期：2004-02-17 |
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| 中文关键词 电化学还原 硝基苯 废水处理 温和条件 |
| 英文关键词 electrochemical reduction nitrobenzene wastewater treatment mild condition |
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| 中文摘要 |
| 在温和条件下(电流密度不大于1mA/cm2,pH4～9),研究电极材料对水中低浓度硝基苯电催化还原过程的影响.结果表明,S1、S2和AB5电极均能将水中硝基苯高选择地还原为苯胺 ,硝基苯转化率大于85%,苯胺产率大于75%.循环伏安和快速线性扫描研究表明,硝基苯在S1和S2电极上主要进行直接还原,而在AB5电极则主要通过电解产生的氢间接还原.生物降解实验表明,电解产物可以被AN3菌有效降解. |
| 英文摘要 |
| Effect of cathode materials (S1, S2, AB5, graphite, Ni plate, Fe plate) on the electrochemical reduction of nitrobenzene of light concentration under mild conditions(current density less than 1.0 mA/cm2, pH in the range of 4～9), was experimentally studied. In aqueous solution, S1, S2 and AB5 electrodes showed high selectivity of nitrobenzene reduction to aniline, with the nitrobenzene conversion and aniline yield being over 85% and 75%, respectively. The results obtained by cyclic voltammograms and single sweep voltammograms showed that nitrobenzene was directly reduced at S1 and S2 electrodes, while reduced by hydrogen at AB5 electrode. The products electroreduced from nitrobenzene on S1, S2 and AB5 cathodes could be easily degraded by aniline degrading strain AN3 under aerobic condition. |
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