摘要
通过甲苯的非催化环氯化方法，可以明显提高产物中邻氯甲苯质量含量。合适的反应条件为：温度 ３０３ Ｋ，通氯速率４．６×１０－ ２ ｓ－ １ ，溶剂与甲苯的体积比为２。与传统的 Ｆｅ Ｃｌ３ 催化氯化相比，邻氯甲苯与对氯甲苯质量比从１．１提高到２．３６，本流程中使用自产盐酸作氯化溶剂，氯化液分离容易，省去了水洗，没有废水排放，避免了精馏设备腐蚀。
A noncatalytic chlorination technique for increase of ortho chlorotoluene from cyclic chlorination of toluene with hydrochloric acid solvent was studied, the optimum reaction conditions were found to be: reaction temperature was 303 K, the flow rate of chlorine was 4.6×10 -2 s -1 , and volume ratio of solvent/toluene was 2 . By comparison with the ordinary method, the ratio of m (OCT)/ m (PCT) was raised from 1.1 to 2.36 .
出处
《南京化工大学学报》
1999年第5期67-69,共3页
Journal of Nanjing University of Chemical Technology(Natural Science Edition)
关键词
甲苯
氯化
邻氯甲苯
对氯甲苯
制备
toluene chlorination ortho chlorotoluene para chlorotoluene
