化工进展

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多孔镍铁电极电解还原制备2,2'-二氯氢化偶氮苯

赵振宇,李培金,孟庆函,曹 兵   

  1. 北京化工大学材料科学与工程学院,北京 100029
  • 出版日期:2010-09-05 发布日期:2010-09-05

Synthesis of 2,2'-dichlorohydrazobenzene using porous Ni-Fe electrode

ZHAO Zhenyu,LI Peijin,MENG Qinghan,CAO Bing   

  1. College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China
  • Online:2010-09-05 Published:2010-09-05

摘要:

采用负载氧化铅的多孔镍铁电极还原邻氯硝基苯合成2,2'-二氯氢化偶氮苯(DHB),讨论了电极的电极形态、温度、溶剂含量、碱度、邻氯硝基苯浓度和不同分散形式对合成反应的影响,并对反应机理进行了讨论。结果表明镍铁电极具有较高的催化活性,在电流密度36 A/dm270 ℃和适当的泵循环速度条件下产物含量高且稳定,最终DHB的含量能够稳定在90%以上。

Abstract:

A novel synthetic method for 2,2′-dichlorohydrazobenzeneDHBfrom o-chlornitrobenzeneo-CNBwas developed based on porous Ni-Fe electrode dispersed with PbO particles. Effects of cathodeelectrolyte temperatureo-chloronitrobenzene concentrationbasicitydispersion mode and toluene on the electrolytic reduction were discussed. The optimum reaction temperature was found as 70 moderate current density36 A/dm2and appropriate pump flow rate were beneficial to improve the hydrogenation reductionunder which the final DHB content could be reached to 90%.

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