Abstract: The telomerization reaction kinetics of synthesis of 1,1,1,3,3-pentachloropropane promoted with iron powder as catalyst precursor and dibutyl phosphate as co-catalyst was studied. The effects of reaction temperature, amount of iron powder and co-catalyst on the reaction were investigated. It was found that the telomerization reaction was of first order and activation energy was 69.15 kJ·mol^-1. A reaction kinetic equation was presented. This reaction followed a free radical reaction mechanism in the absence of catalyst, but followed a non-chain redox mechanism in the presence of catalyst.

Key words: 1,1,1,3,3-pentachloropropane, synthesis, reaction kinetics, iron powder, dibutyl phosphate, radical

摘要： 以铁粉为催化剂前体，磷酸二丁酯为助催化剂，对四氯化碳与氯乙烯合成1，1，1，3，3-五氯丙烷的调聚反应动力学进行了研究。考察了铁粉用量、助催化剂用量及反应温度对反应的影响。研究结果表明：在反应物料比n（CCl₄）：n（VnCl）=1：0.25，反应温度353～388 K范围内该反应为一级反应，反应活化能为69.15 kJ·mol^-1，得到了氯乙烯消耗速率的动力学方程。动力学研究结果表明，在无催化剂条件下反应遵循纯自由基机理，而在催化剂存在条件下反应遵循非链式氧化还原机理。

关键词: 1,1,1,3,3-五氯丙烷, 合成, 反应动力学, 铁粉, 磷酸二丁酯, 自由基