Abstract: The chloroacetic acid was synthesized by acetic acid in this experiment, in which using thionylchloride as the catalyst,at the same time the chlorine and oxgen were added in as the chlorinating agents.The effect of reaction temperature and time, the amount and species of catalyst were investigated on the yield of product.The optional conditions were proved to be at temperature of 110℃, n(acetic acid):n(thionylchloride)=2:1, the highest yield up to 96.5% and the purity reached 99.5%.

Key words: acetic acid, sulfoxide chloride, chlorine, oxygen, reaction conditions

摘要： 实验以二氯亚砜为催化剂,同时通氯气和氧气氯化乙酸得到氯乙酸。研究了催化剂种类及用量、反应温度、氯化深度以及助催化剂用量等因素对收率的影响,结果表明该反应最优工艺条件为:反应温度在110℃;乙酸与二氯亚砜摩尔比为10:1;氯气与氧气通速比为2:1,按此工艺反应主产物含量99.5%,经处理后产率96.5%。

关键词: 乙酸, 二氯亚砜, 氯气, 氧气, 工艺条件