多孔镍铁电极电解还原制备2,2'-二氯氢化偶氮苯  

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

作　　者：赵振宇[1] 李培金[1] 孟庆函[1] 曹兵[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《化工进展》2010年第9期1640-1644,共5页Chemical Industry and Engineering Progress

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3～6A/dm2,70℃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。A novel synthetic method for 2,2＇-dichlorohydrazobenzene（DHB）from o-chlornitrobenzene （o-CNB）was developed based on porous Ni-Fe electrode dispersed with PbO particles.Effects of cathode,electrolyte temperature,o-chloronitrobenzene concentration,basicity,dispersion mode and toluene on the electrolytic reduction were discussed.The optimum reaction temperature was found as 70 ℃,moderate current density（3—6 A/dm2）and appropriate pump flow rate were beneficial to improve the hydrogenation reduction,under which the final DHB content could be reached to 90%.

关 键 词：2 2'-二氯氢化偶氮苯 镍铁多孔电极 电化学还原 

分 类 号：O625.3[理学—有机化学]