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Synthesis of chlorotoluene by anodic oxidation using an ion exchange membrane

WANG Jianmin,LI Peijin   

  1. College of Materials Science and Engineering,Beijing University of Chemical Technology
  • Online:2009-06-05 Published:2009-06-05

应用离子交换膜通过电化学氧化合成氯甲苯

王建民,李培金   

  1. 北京化工大学材料科学与工程学院

Abstract: Chlorotoluene was synthesised by anodic oxidation using netted titanium as the anode,netted nickel as the cathode,saturated NaCl solution as the anode electrolyte and an ion exchange membrane as a separator.The selections of reactive condition such as mass fraction of electrolyte,current density,electrolyte temperature and reaction time are discussed.The optimized reaction conditions were found to be 25% NaCl as the anode electrolyte,10% NaOH as the cathode electrolyte,10—15A/dm2 of current density and the reaction temperature as 25 ℃,under which chlorotoluene yield reached to 55.5% with a current efficiancy of 51.5%.

摘要: 以钛网为阳极,镍网为阴极,饱和的NaCl溶液为阳极电解质,应用离子交换膜通过阳极氧化甲苯的方法合成氯甲苯。讨论了阳极电解质质量分数、电流密度、电解液温度、反应时间等反应条件的选择。结果表明:在反应温度25 ℃,阳极、阴极电解液分别为25%NaCl和10%NaOH溶液,电流密度为10~15 A/dm2条件下电解,并在4.5 h左右结束反应,氯甲苯的产率最高,可达55.5%,电流效率为51.5%。

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