合成羧乙基硫代丁二酸的热力学计算与分析  

Thermodynamic Estimation of Synthesis of Carboxyalkylthiosuccinic Acids

作　　者：任保勇[1] 张玉芳[1] 聂锦梅[1] 

机构地区：[1]北京服装学院化工研究所,北京100029

出　　处：《广州化工》2009年第7期36-39,共4页GuangZhou Chemical Industry

摘　　要：以3-巯基丙酸和马来酸为原料合成羧乙基硫代丁二酸,选用较准确的基团贡献法估算了反应体系中各组分的标准生成焓、标准生成自由能、标准熵和热容等热力学数据,推导出了反应焓、反应自由能和反应平衡常数随温度的变化关系式。通过对反应体系的热力学计算与分析,验证了该反应在热力学上的可行性。Carboxyalkylthiosuccinic acids was synthesized by 3 -mercaptopropionic acid and maleic acid as raw material. The relatively accurate methods of group contributions were applied to estimate the standard enthalpy, standard free energy of formation, standard entropy and heat capacity of each component. The relationship formula of the reaction enthalpy, reaction free energy and reaction equilibrium constant changing with temperature were established. Based on the thermodynamics calculation and analysis of the reaction system, the conclusion that the reaction was practicable in thermo-dynamics could be obtained.

关 键 词：羧乙基硫代丁二酸 基团贡献法 热力学计算 

分 类 号：TQ649.4[化学工程—精细化工] O642.1[理学—物理化学]