混硝基氯苯氯化制备3,4-/2,5-二氯硝基苯  

Preparation of 3,4-/2,5-Dichloronitrobenzene by Chlorination of Chloronitrobenzene Mixture

作　　者：杨树斌[1] 王芳[2] 丁克鸿[1] 

机构地区：[1]江苏扬农化工集团有限公司,江苏扬州225009 [2]扬州工业职业技术学院,江苏扬州225127

出　　处：《上海化工》2014年第6期14-17,共4页Shanghai Chemical Industry

摘　　要：研究了以混硝基氯苯(间位油)为原料氯化制备3,4-/2,5-二氯硝基苯。通过工艺优化,筛选出最佳工艺条件:FeCl3作为催化剂,水与FeCl3的摩尔比为1∶1,反应温度为100℃,时间为4 h。在上述条件下,间位油转化率为78.8%,3,4-/2,5-二氯硝基苯选择性为83.0%。Studied the preparation of 3,4-/2,5-dichloronitrobenzene by chlorination of chloronitrobenzene mixture （recta-oil）. The optimum technical conditions were selected through process optimization： using FeCl3 as the catalyst, the molar ratio of water and FeCl3 was 1：1, and reacted at 100 ℃ for 4 hours. Under the above conditions, the conversion rate of recta-oil was 78.8% and the selectivity of 3,4-/2,5-dichloronitrobenzene was 83.0%.

关 键 词：硝基氯苯 间位油 氯化 3 4- 2 5-二氯硝基苯 

分 类 号：TQ246.1[化学工程—有机化工]