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1,1,2-三氯乙烷―DMF―水三元体系液液平衡数据的测定与关联

Keywords: 1,1,2-三氯乙烷,DMF,液液平衡

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Abstract:

在常压、温度分别为30、40、50℃条件下,测量了1,1,2-三氯乙烷―DMF―水三元体系的液液平衡数据,得到了该三元体系的共轭相组成并绘得相平衡曲线,确定了40℃为合适条件.实验数据用UNIQUAC和NRTL模型进行了关联,关联值与实验值吻合良好.求得了溶剂对溶质的选择性系数,验证了以水为溶剂,采用液液萃取的方法分离1,1,2-三氯乙烷―DMF体系是完全可行的.

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