化工学报 ›› 2008, Vol. 59 ›› Issue (S1): 30-33.

• 表面与界面工程 • 上一篇    下一篇

离子液体RMimBF4中硝基苯电还原传荷特性

陈松;马淳安;褚有群;毛信表;朱英红   

  1. 盐城工学院应用化学研究所; 浙江工业大学化学工程与材料学院
  • 出版日期:2008-06-30 发布日期:2008-06-30

Transfer electron characteristic of nitrobenzene electrochemical reduction in ionic liquids RMimBF4

CHEN Song;MA Chun’an;CHU Youqun;MAO Xinbiao;ZHU Yinghong   

  • Online:2008-06-30 Published:2008-06-30

摘要:

采用循环伏安法研究了离子液体RMimBF4中硝基苯在微铂电极上电还原动力学特性参数——传递系数α的变化规律。研究结果表明,离子液体中,硝基苯电还原过程的第2个电子转移反应是速度控制步骤。该反应的传递系数α随硝基苯浓度增加而减小;相同浓度时,温度升高,α迅速增大。在离子液体EMimBF4-水-硝基苯体系中,相同硝基苯浓度下,随水含量增加,α先减小,后增大。不同离子液体中,α的变化规律为:EMimBF4>〖JP〗BMimBF4>HMimBF4

关键词:

硝基苯, 离子液体RMimBF4, 电还原, 传递系数

Abstract:

he transfer coefficient α of nitrobenzene electrochemical reduction in RMimBF4 was investigated by cyclic voltammetryIt is showed that with the increasing of the concentration of nitrobenzene in RMimBF4,α decreases,while temperature make reversed effect at the same nitrobenzene concentrationα decreases in the order EMimBF4>BMimBF4>HMimBF4,at equal nitrobenzene concentration,the value of α is reduced in EMimBF4-H2O at low water concentration and has reversed effect at high water concentration

Key words:

硝基苯, 离子液体RMimBF4, 电还原, 传递系数