研究了丁二酸酐在液态条件下进行水解反应生成丁二酸的热力学过程,采用基团贡献法对丁二酸酐水解过程中的热力学参数进行了估算,分别计算得到了 298～393 K 丁二酸酐水解反应过程中摩尔反应焓、摩尔Gibbs自由能、平衡常数与温度的关系.计算结果表明:反应温度为298～393 K,丁二酸酐水解反应∆Gm<0,反应可自发进行;∆Hm<0,反应为放热反应;反应平衡常数Kθ受温度影响较大.
Thermodynamic Study on Hydrolysis of Succinic Anhydride
The thermodynamic process of the hydrolysis of succinic anhydride to succinic acid in liquid state was studied.The thermodynamic calculation and analysis of the hydrolysis reaction between succinic anhydride and water were carried out by using the group contribution method,and the relationship between the molar enthalpy change,molar Gibbs free energy change,the equilibrium constant and temperature were obtained within 298～393 K.The results show that the reaction can be spontaneous.The hydrolysis of succinic anhydride is an exothermic reaction.The reaction equilibrium constant is greatly affected by temperature.
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