| 催化加氢法制备对溴苯胺 |
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| 引用本文： | 鲁莉华,李英春.催化加氢法制备对溴苯胺[J].青岛科技大学学报,2005,26(3):205-207. |
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| 作者姓名： | 鲁莉华 李英春 |
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| 作者单位： | 青岛科技大学,化学与分子工程学院,山东,青岛,266042;青岛科技大学,化学与分子工程学院,山东,青岛,266042 |
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| 摘 要： | 以W4型RaneyNi为催化剂,双氰胺为脱溴抑制剂(助催化剂),甲醇为溶剂,对对溴硝基苯催化加氢还原制备对溴苯胺的反应进行了研究。考察了温度、氢气压力及助催化剂量等工艺条件对反应的影响,并对催化剂进行了套用实验。结果表明:在较佳反应条件下,对溴硝基苯的转化率达99.8%以上,对溴苯胺的摩尔选择率可达98.0%,催化剂可套用10次以上。
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| 关 键 词： | 对溴硝基苯 对溴苯胺 催化加氢 Raney-Ni |
| 文章编号： | 1672-6987(2005)03-0205-03 |
| 修稿时间： | 2004年11月10 |
Studies on Preparation of p-Bromoaniline by Catalytic Hydrogenation |
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| LU Li-hua,LI Ying-chun.Studies on Preparation of p-Bromoaniline by Catalytic Hydrogenation[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2005,26(3):205-207. |
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| Authors: | LU Li-hua LI Ying-chun |
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| Abstract: | p-Bromoaniline was prepared by catalytic hydrogenation of p-bromonitrobenzene using Raney-Ni as catalyst and methanol as solvent. The effects of temperature, amount of cocatalyst and pressure of H2 on reaction results were studied. Under the optimum conditions, the conversion of p-bromonitrobenzene was over 99.8%, and the selectivity of p-Bromoaniline was 98.0%. Moreover, the catalyst Raney-Ni could be reused for more than 10 times. |
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| Keywords: | p-bromonitrobenzene p-bromoaniline catalytic hydrogenation Raney-Ni |
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