Raney镍选择性催化氢化硝基苯制备氢化偶氮苯  

Preparation of hydrazobenzene from nitrobenzene by Raney-nickel selectively catalysed hydrogenation

作　　者：刘思印[1] 李国防[1] 赵文献[1] 

机构地区：[1]商丘师范学院化学系,河南商丘476000

出　　处：《应用化工》2009年第5期629-631,共3页Applied Chemical Industry

基　　金：河南省教育厅资助项目(0511020300)

摘　　要：在NaOH的甲醇溶液中,硝基苯在Raney镍催化作用下能选择性氢化还原为氢化偶氮苯。当Raney镍、硝基苯和NaOH的质量比为最佳值(mRaney镍∶m硝基苯∶mNaOH=1∶10∶20),稳定氢气压力0.6 MPa,28℃磁搅拌反应10 h氢化偶氮苯的收率高达98.9%。而且Raney镍可套用10次以上。Nitrobenzene can selectively deoxidize to hydrazobenzene by Raney-nickel catalysis hydrogenation In basic methanol solution. When the mass ratio of Raney-nickel,nitrobenzene and sodium hydroxide is optimal （mRaney镍：m硝基苯 = 1 ： 10 ： 20） and hydrogen pressure maintain 0.6 MPa,and the yield of hydrazobenzene reach to 98.9% after 10 h reaction at the temperature of 28 ℃. And the catalysis can apply mechanically more than 10 times.

关 键 词：硝基苯 氢化偶氮苯 RANEY镍 催化氢化 

分 类 号：O625.65[理学—有机化学]