正丁醇-苯固液相平衡及交叉缔合的研究

Solid Liquid Phase Equilibria and Cross Association for n Butanol+Benzene

测制了正丁醇－苯二元系的固液平衡相图，它属简单低共熔混合物类相图．算出体系在２９８．１５Ｋ的摩尔超额吉布斯自由能，其最大值为１１１０Ｊ／ｍｏｌ．用Ｋｒｅｔｓｃｈｍｅｒ－Ｗｉｅｂｅ模型进行处理，得到正丁醇与苯的交叉缔合常数ＫＡＢ，在２９８．１５Ｋ，其值为５５．７．

Melting temperatures have been measured and the solid liquid phase diagram was constructed for n butanol+benzene.It is a simple eutectic system.Excess molar Gibbs free energies were calculated at 298 15 K,the largest value is 1 110 J/mol.The data were treated with Kretschmer Wiebe association model.The cross association constant K AB s have been calculated,the value of K AB for n butanol and benzene is 55 7 at 298 15 K.