A process for preparing 4-aminodiphenylamine using nitrobenzene and aniline as raw materials, a complex base catalyst as the condensation catalyst, and a powdery composite catalyst as the hydrogenation catalyst. The process has 5 process stages including condensation, hydrogenation, separation I, separation II, and refining.
使用
硝基苯和
苯胺作为原材料,复合碱催化剂作为缩合催化剂,粉状复合催化剂作为加氢催化剂的一种制备4-
氨基
二苯胺的工艺流程。该工艺有5个工艺阶段,包括缩合、加氢、分离I、分离II和精制。