高等学校化学学报

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丙酮-水混合溶剂中3-甲基吡啶的电氧化

徐玉玲, 曹学静, 张恒彬, 张玉敏, 李克昌
  

  1. 吉林大学化学学院, 长春 130021
  • 收稿日期:2005-10-28 修回日期:1900-01-01 出版日期:2006-11-10 发布日期:2006-11-10
  • 通讯作者: 张恒彬

Electrooxidation of 3-Picoline in Acetone/Water Mixed Solvents

XU Yu-Ling, CAO Xue-Jing, ZHANG Heng-Bin, ZHANG Yu-Min, LI Ke-Chang   

  1. College of Chemistry, Jilin University, Changchun 130021, China
  • Received:2005-10-28 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10
  • Contact: ZHANG Heng-Bin

摘要: 在以质子交换膜为隔膜的电解槽内, 通过3-甲基吡啶在PbO2电极上的电氧化研究, 发现在丙酮-水混合溶剂中, 与纯水作溶剂相比, 不仅在相同阳极电位下电流密度大幅度上升, 3-甲基吡啶电氧化生成烟酸的选择性和电流效率也明显提高. 通过循环伏安、极化曲线和恒电位电解实验, 研究了在丙酮-水混合溶剂中3-甲基吡啶的电氧化条件, 并比较了不同条件下的选择性和电流效率.

关键词: 3-甲基吡啶, 丙酮, 烟酸, 电氧化

Abstract: In an electrolytic cell with proton exchange membrane as the diaphragm, it was found from the electrooxidation of 3-picoline at a PbO2 electrode in acetone/water mixed solvents that the current density at the same anode potential not only increases remarkably, but also the selectivity and the current efficiency of electrooxidation from 3\|picoline to nicotinic acid increase obviously compared with the pure water as the solvent. Electrooxidation conditions of 3-picoline in acetone/water mixed solvents was studied, and the selectivity and the current efficiency under various conditions were compared.

Key words: 3-Picoline, Acetone, Nicotinic acid, Electrooxidation

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