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.
出处
《应用化工》
CAS
CSCD
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)
关键词
硝基苯
氢化偶氮苯
RANEY镍
催化氢化
nitrobenzene
hydrazobenzene
Raney-nickel
catalysed hydrogenation