Experimental and correlational study of phase equilibria in aqueous solutions of phosphoric acid with alcohols at different temperatures

被引：21
作者：
Gilani, A. Ghanadzadeh [1 ]
Najafgholizadeh, A. [1 ]
Khanghah, B. Mohammadi [1 ]
Gazani, M. Nasouri [1 ]
机构：
[1] Univ Guilan, Fac Sci, Dept Chem, Rasht, Iran
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 268卷
关键词：
Liquid-liquid equilibrium; Phosphoric acid; NRTL model; UNIQUAC model; LIQUID-LIQUID EQUILIBRIUM; SOLVENT-EXTRACTION; DIISOPROPYL-ETHER; TERNARY-SYSTEMS; ISOAMYL ALCOHOL; BINARY-SYSTEMS; WATER; PURIFICATION; MIXTURES; 25-DEGREES-C;
D O I：
10.1016/j.molliq.2018.06.115
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Liquid-liquid equilibrium (LLE) data were measured for the aqueous mixtures of phosphoric acid with 1-pentanol and 1-heptanol at T= (298.2,308.2, and 3182) K and atmospheric pressure. These ternary systems exhibit as Treybal's type-1 liquid-liquid phase behavior. The reliability of the experimental tie-lines was checked using the Othmer-Tobias and Hand correlation equations. The activity coefficient models of NRTL and UNIQUAC were applied to fit the experimental tie lines. For these models, values of the binary interaction parameters between each pair of components in the studied systems were obtained. Experimental distribution coefficients and selectivity factors for the immiscibility regions were determined. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：553 / 560
页数：8
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