对氨基苯酚的制备  

Preparation of p-Aminophenol

作　　者：宋龙锋 袁芝琴 陈伟兴 夏俊刚 SONG Long-feng;YUAN Zhi-qin;CHEN Wei-xing;XIA Jun-gang(Zhejiang Runtu Co.,Ltd.,Shaoxing 312369,Zhejiang China)

机构地区：[1]浙江闰土股份有限公司,绍兴312369

出　　处：《染料与染色》2021年第4期33-35,共3页Dyestuffs and Coloration

摘　　要：本文研究了对氨基苯酚的催化加氢制备工艺,考察了反应物料比、反应温度、反应时间及后处理方式等条件对产品收率及纯度等影响。确定最佳工艺为:对硝基苯酚投料量70 g,乙醇200 g,雷尼镍4.5 g,反应时间1.5~2h。该条件下产品纯度98%以上,收率94%以上。该工艺催化剂可以套用,操作简单、对环境污染小。The preparation of p-aminophenol by catalytic hydrogenation was studied.The effects of reactant ratio, reaction temperature, reaction time and post-treatment methods on the yield and purity of the product were investigated.The optimum conditions were determined as follows: p-nitrophenol 70 g, ethanol 200 g, Raney nickel 4.5 g, reaction time 1.5 ~ 2 h.Under the conditions, the purity of the product was over 98% and the yield was over 94%.The process had applicable catalyst, easy operation, and little environmental.

关 键 词：对氨基苯酚 加氢 雷尼镍 催化 

分 类 号：TQ612.1[化学工程—精细化工]