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文章编号：1672-6987（2026）03-0041-08；DOI：10. 16351/j. 1672-6987. 2026. 03. 005
曹 恒，丁军委* ，胡 杰，于文龙，单玉领* （青岛科技大学 化工学院，山东 青岛 266042）
摘 要：间二甲苯光催化氯化法是生产间位芳纶氯化剂 1，3-双（三氯甲基）苯的重要技术路 线。本研究在 110~130 ℃，蓝光为光源，三氯甲苯为溶剂条件下，进行了间二甲苯侧链光催化 氯化动力学研究，建立了拟一级反应动力学模型，获得了包括串联反应速率常数、指前因子和 活化能等动力学参数，模型模拟结果与实验值吻合性较好。在此基础上，讨论了氯气流量、温 度，溶剂等因素对主/副反应动力学行为的影响。研究发现，苯环上亲电取代副反应主要发生 在反应初始阶段，与侧链氯化为竞争性平行反应，且氯气流量越大，温度越低，溶剂极性越小， 越有利于副反应。这些发现为强化间二甲苯侧链光催化氯化选择性，抑制苯环副反应的发生 提供了重要的理论依据。
关键词：间二甲苯；侧链氯化；动力学；环上氯化
中图分类号：TQ 207+. 2 文献标志码：A
引用格式：曹恒，丁军委，胡杰，等 . 间二甲苯光催化氯化动力学研究［J］. 青岛科技大学学 报（自然科学版），2026，47（3）：41-48.
CAO Heng， DING Junwei， HU Jie， et al. Study on kinetics of photochlorination of m-xylene ［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition）， 2026，47（3）：41-48.
Study on Kinetics of Photochlorination of m-Xylene
CAO Heng，DING Junwei，HU Jie，YU Wenlong，SHAN Yuling （College of Chemical Engineering， Qingdao University of Science and Technology，Qingdao 266042，China）
Abstract：The photocatalytic chlorination of m-xylene is an important technical route to pro⁃ duce 1，3-bis（trichloromethyl）benzene， a chlorinating agent for meta-aramid. In this study， the kinetic behavior of the side chain photocatalytic chlorination of m-xylene was investigated under conditions of 110—130 ℃ and blue light as the light source， with benzotrichloride as the sol⁃ vent. A pseudo-first-order reaction kinetics model was established， and kinetic parameters including the rate constant of the series reaction， the pre-exponential factor， and the activation energy were obtained. The simulation results of the model were in good agreement with the experimental values. On this basis， the effects of chlorine gas flow rate，temperature， and sol⁃ vent on the kinetic behavior of the main/side reactions were discussed. We found that the elec⁃ trophilic substitution side reactions on the benzene ring mainly occur at the initial stage of the reaction， and are competitive parallel reactions with the side chain chlorination. Moreover，higher chlorine gas flow rates， lower temperatures， and less polar solvents are more favorable for side reactions. These findings provide an important theoretical basis for enhancing the selec⁃ tivity of the photocatalytic chlorination of m-xylene side chains and inhibiting the occurrence of side reactions on the benzene ring.
Key words：m-xylene； side chain chlorination； kinetic； ring-chlorination
收稿日期：2025-05-22
基金项目：国家自然科学基金项目（Z2108144，22208182）.
作者简介：曹 恒（1995—），男，硕士研究生 . * 通信联系人 .
