无水硫酸镁催化剂在2,5-二氯硝基苯生产中的应用  

Application of anhydrous magnesium sulfate as a catalyst in the production of 2,5-dichloronitrobenzene

作　　者：许小亮 夏兆亮 王兆全 佘远春 陈树鹏 丁健 XU Xiaoliang;XIA Zhaoliang;WANG Zhaoquan;SHE Yuanchun;CHEN Shupeng;DING Jian(Jiangsu Longchang Chemical Industry Co.,Ltd.,Nantong 226532,China;Jiangsu Badzhong Baoda Pharmaceutical Co.,Ltd.,Nantong 226532,China)

机构地区：[1]江苏隆昌化工有限公司,江苏南通226532 [2]江苏宝众宝达药业有限公司,江苏南通226532

出　　处：《氯碱工业》2020年第3期22-24,共3页Chlor-Alkali Industry

摘　　要：介绍了以对二氯苯和浓硝酸为原料、无水硫酸镁为催化剂制取2,5-二氯硝基苯的工艺过程;分析了催化剂用量和催化剂循环利用对产物选择性的影响,确定了适宜的催化剂用量和催化剂酸化条件。The process of 2,5-dichloronitrobenzene production with p-dichlorobenzene and concentrated nitric acid as raw materials and anhydrous magnesium sulfate as catalyst was introduced.The effects of catalyst dosage and recycled catalyst on product selectivity were analyzed.The appropriate amount of catalyst and conditions of catalyst acidification were determined.

关 键 词：无水硫酸镁 催化剂 2 5-二氯硝基苯 对二氯苯 浓硝酸 

分 类 号：TQ246.13[化学工程—有机化工]