作　　者： ; ; ; ; ;

机构地区： 暨南大学生命科学技术学院化学系

出　　处： 《暨南大学学报（自然科学与医学版）》 2004年第5期609-614,共6页

摘　　要： 　通过实验了解二异丙醚(DIPE)在水中的溶解情况,以及与汽油中多组分混合物的相分离情况,为正确选择汽油添加剂提供理论依据.测定了水-二异丙醚-甲苯三元体系在298 15K、常压下的液液平衡数据,并用含有二元和三元参数的ModifiedUNIQUAC模型进行关联计算,将实验数据和计算结果进行了对比,结果为:该模型能较为准确地关联这个三元体系;关联结果比只用二元相互作用参数进行预测的结果要好. In order to examine the possibility of using diisopropyl ether (DIPE) as a gasoline additive and the phase separation problems of DIPE in water, phase diagram studies need to be performed at room temperature and atmospheric pressure to guarantee that there is no phase separation. In this work, ternary liquid-liquid equilibria (LLE) for the water + DIPE + toluene was measured at 298.15K and ambient pressure. The experimental LLE data had been satisfactorily correlated by using the modified UNIQUAC model with binary and ternary parameters. The calculated results were compared with the experimental LLE data. The ternary LLE results calculated by the modified UNIQUAC model with binary, ternary parameters gives better agreement with the experimental results than those by the modified UNIQUAC model with binary parameters only.

关 键 词： 热力学模型 三元液液平衡 汽油添加剂

领　　域： [理学] [理学]