强碱性体系中4-硝基二苯胺催化加氢还原工艺研究  

Study on hydrogenation of nitrodiphenylamine in alkalescence system

作　　者：朱建良[1] 秦文荣[1] 欧阳平凯[1] 

机构地区：[1]南京工业大学制药与生命科学学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2002年第6期48-51,共4页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：针对4 硝基二苯胺在强碱性体系中的特性,采用自制的Ni/C加氢还原催化剂,对催化加氢还原工艺条件进行了研究,得到加氢还原反应的适宜工艺条件为:温度100℃、压力2 0MPa、进料质量分数20%和液相空时2h。在此反应条件下,4 硝基二苯胺的转化率达到99%以上,产物RT培司的收率维持在95%以上。The hydrogenation catalyst is invented by ourself in allusion to the speciality of 4nitrodiphenylamine in alkalescence system. After optimizing the conditions of hydrogenation, the suitable conditions are determined: temperature 100 ℃?pressure 20 MPa?concentration expressed in percentage by weight of reaction mass 20%?space time above 2 h. The conversion rate is above 99% and the yield is above 95% under the optimal conditions. Melting point of the product is about 70 ℃.

关 键 词：强碱性体系 催化加氢还原工艺 4-硝基二苯胺 RT培司 工艺条件 催化剂 硝基苯法 

分 类 号：TQ246.3[化学工程—有机化工] TQ20