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化学学报
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化学学报 ›› 1988, Vol. 46 ›› Issue (7): 631-638. 上一篇    下一篇

研究论文

硫在疏质子介质中电化学还原机理的研究 I: 第一步氧化还原过程的研究

谢乃贤;黄义祥   

  1. 湖南大学化学化工系
  • 发布日期:1988-07-15

Studies on electroreduction mechanism of sulfur in aprotic medium I: Researches of the first redox step

XIE NAIXIAN;HUANG YIXIANG   

  • Published:1988-07-15

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2

本文用电化学方法研究了硫在DMSO溶剂中第一步氧化还原过程的机理, 发现这个过程不是一个简单的双电子过程, 提出了更为合理的EEC机理, 数字模拟也表明该机理是可能的, 并从2.5次微分谱上发现了S6(II)的氧化峰, 其峰电位为-0.29V(相对于银电极). 还计算了该体系的某些动力学参数值.

关键词: 硫, 氧化还原反应, 反应机理, ＤＭＳＯ, 离解平衡, 电化学反应, 循环伏安法, 国家自然科学基金

The mechanism of the 1st step electroredn. of S in DMSO was studied by electrochem. methods. Experimental results showed that it is not a simple 2-electron process. A EEC mechanism, supported by results of digital simulation, was proposed. An oxidation peak of S62- at -0.29 V was found on a 2.5 times differentiated linear scan voltammogram. Some kinetic parameters were calculated

Key words: SULFUR, OXIDATION REDUCTION REACTION, REACTION MECHANISM, DMSO, DISSOCIATION EQUILIBRIUM, ELECTROCHEMICAL REACTION, CYCLOVOLTAMGRAPH, NSFC

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