乙酸催化氯化反应机理及制备氯乙酸中二氯乙酸的控制  

Study on Mechanism for Catalyzed Chlorination of Acetic Acid and Methods for Prohibiting dichlorination

作　　者：周茂权[1] 张娜[1] 严生虎[2] 张跃[2] 

机构地区：[1]南京大学化学化工学院,江苏南京210093 [2]江苏石油化工学院精细化工研究所,江苏常州213016

出　　处：《江苏石油化工学院学报》2001年第3期23-25,共3页Journal of Jiangsu Institute of Petrochemical Technology

基　　金：中国石油化工集团公司科技开发基金资助 (2 0 0 0 0 5 )

摘　　要：通过对乙酸在硫磺、乙酐和乙酰氯为催化剂下进行氯化制备氯乙酸反应机理的研究 ,认为乙酰氯是反应体系中真正的催化剂 ,副反应属于连串反应 。The Mechanism for Catalyzed Chlorination of Acetic Acid to mono-and dichloroacetic acids was studied .The result indicated that AcCl acts as the active catalyst and that dichloroacetic acid was formed mainly via the chlorination of acetyl chloride to dichloroacetyl chloride,which undergoes chlorine exchange to dichloroacetic acid. Several ways for prohibiting forming dichloroacetic acid(DCA) was brought forth.

关 键 词：氯化 二氯乙酸 控制 乙酸 催化 氯乙酸 

分 类 号：TQ225.3[化学工程—有机化工] TQ225.122