文献类型：期刊文献

中文题名：三聚氯氰在水溶液中的水解反应机理及动力学研究

英文题名：Mechanisim and Kinetics of Cyanuric Chloride Hydrolysis in Aqueous Solution

作者：颜志[1];薛为岚[1];曾作祥[1];顾梅嵘[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2008

卷号：22

期号：5

起止页码：803

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：20084711720298);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：水解;三聚氯氰;动力学;模型

外文关键词：hydrolysis; cyanuric chloride; kinetics; model

摘要：研究了三聚氯氰在水溶液中的水解动力学。在10-30℃及pH1-9的范围内,在水或丙酮/水体系中分别测定了三聚氯氰的浓度随时间的变化。实验数据表明：当pH≤6时,三聚氯氰的水解速率与pH无关;但当pH≥7时,该速率随pH增大而增大。据此可假设,三聚氯氰水解反应在上述两个不同pH范围内,分别按单分子取代反应机理（SN1）和双分子取代反应机理（SN2）进行。其相应的动力学模型分别为：-d（nA/v）/dt=7.625×10^9e^-69298^RTcA（pH≤6）;-d（nA/v）/dt=7.112×10^11e^-59267^RTcAcB^05（pH≥7）。实验值与模型值的对比结果表明,该动力学模型能够很好地拟合实验数据,平均误差分别为2.01%和9.88%。
The mechanism and kinetics of cyanuric chloride hydrolysis in aqueous solution were investigated. The hydrolysis reaction was carried out in water or acetone/water system in the temperature range of 10℃ to 30 ℃. The progress of hydrolysis of cyanuric chloride was monitored at different temperatures and various pH. The experimental data show that the hydrolysis rates of cyanuric chloride are independent of pH value when pH≤6, and increase with the increase ofpH value when pH≥7. Based on the obtained results, it was supposed that the hydrolysis reaction takes place by the Unimolecular Nucleophilic Substitution（SN1） mechanism when pH≤6 and by the Bimolecular Nucleophilic Substitution（SN2） mechanism when pH≥7. Kinetic models corresponding to above two mechanisms were proposed separately as follow： -d（nA/v）/dt=7.625×10^9e^-69298^RTcA（pH≤6）;-d（nA/v）/dt=7.112×10^11e^-59267^RTcAcB^05（pH≥7）. The kinetic modelsagree well with the experiment data, and the average deviations of the models are 2.01% and 9.88%, respectively.