Influence of temperature on the (liquid plus liquid) equilibria of {methanol plus benzene plus hexane} ternary system

被引：3
作者：
Gramajo de Doz, Monica B. [1 ]
Bonatti, Carlos M. [1 ]
Lucena, Maria C. [1 ]
Gonzalez, Diego A. [1 ]
Mancilla, Marcos E. [1 ]
机构：
[1] Univ Nacl Tucuman, Dept Fis, Fac Ciencias Exactas & Tecnol, RA-4000 San Miguel De Tucuman, Argentina
来源：
FLUID PHASE EQUILIBRIA | 2011年 / 305卷 / 01期
关键词：
Data; Liquid-liquid equilibria; Ternary system; Methanol; Benzene; Hexane; QUATERNARY SYSTEMS; 303.15; K; HYDROCARBONS; INCLUDING 2,2,4-TRIMETHYLPENTANE; T=303.15 K; WATER; CYCLOHEXANE; ETHANOL; ALCOHOL; MIXTURES;
D O I：
10.1016/j.fluid.2011.02.022
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In order to show the influence of temperature on the liquid-liquid equilibria (LLE) of {methanol (1) + benzene (2) + hexane (3)} ternary system, equilibrium data at T = (278.15, 283.15, and 293.15)K are reported. The effect of the temperature on liquid-liquid equilibrium is determined and discussed. Ternary system is available from the literature at T = 298 K. All chemicals were quantified by gas chromatography using a thermal conductivity detector. The solubility data for methanol + hexane and the upper critical temperature (UCST) at 308.3 K was reported. The tie line data for the ternary system were satisfactorily correlated by the Othmer and Tobias method, and the plait point coordinates for the three temperatures were estimated. Experimental data for the ternary system are compared with values calculated by the NRTL and UNIQUAC equations, and predicted by means of the UNIFAC group contribution method. It is found that the UNIQUAC and NRTL models provide similar good correlations of the equilibrium data at these three temperatures. Finally, the UNIFAC model predicts an immiscibility region larger than the experimental observed. Distribution coefficients were also analysed through distribution curves. (C) 2011 Elsevier B.V. All rights reserved.
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页码：34 / 38
页数：5
相关论文
共 19 条
[1]   STATISTICAL THERMODYNAMICS OF LIQUID-MIXTURES - NEW EXPRESSION FOR EXCESS GIBBS ENERGY OF PARTLY OR COMPLETELY MISCIBLE SYSTEMS [J].
ABRAMS, DS ;
PRAUSNITZ, JM .
AICHE JOURNAL, 1975, 21 (01) :116-128
[2]   Liquid-liquid equilibria for the quaternary system water plus methyl tert-butyl ether plus benzene plus cyclohexane and its constituent partially miscible ternary systems at 303.15 K [J].
de Doz, MBG ;
Bonatti, CA ;
Sólimo, HN .
ENERGY & FUELS, 2005, 19 (05) :1977-1983
[3]   (Liquid plus liquid) equilibria of ternary and quaternary systems with two hydrocarbons, an alcohol, and water at 303.15 K.: Systems containing cyclohexane, benzene, ethanol, and water [J].
de Doz, MBG ;
Bonatti, CM ;
Sólimo, HN .
JOURNAL OF CHEMICAL THERMODYNAMICS, 2003, 35 (12) :2055-2065
[4]   (Liquid plus liquid) equilibria of ternary and quaternary systems with two hydrocarbons, an alcohol, and water at T=303.15 K.: Systems containing cyclohexane, benzene, methanol, and water [J].
de Doz, MBG ;
Bonatti, CM ;
Sólimo, HN .
JOURNAL OF CHEMICAL THERMODYNAMICS, 2003, 35 (05) :825-837
[5]  
de Doz MBG, 2002, SEPAR SCI TECHNOL, V37, P245
[6]  
de Doz MBG, 2003, FLUID PHASE EQUILIBR, V205, P53
[7]   (Liquid plus liquid) equilibria of ternary and quaternary systems including 2,2,4-trimethylpentane, benzene, methanol, and water at T=303.15 K [J].
de Doz, MBG ;
Bonatti, CM ;
Barnes, N ;
Sólimo, HN .
JOURNAL OF CHEMICAL THERMODYNAMICS, 2001, 33 (12) :1663-1677
[8]  
Francis A., 1963, Liquid-liquid equilibriums
[9]  
Fredenslund A., 1977, Vapor-Liquid Equilibria Using Unifac: A Group-Contribution Method
[10]   Liquid-liquid equilibria for pseudoternary systems:: isooctane-benzene-(methanol plus water) [J].
García-Flores, BE ;
de Doz, MG ;
Trejo, A .
FLUID PHASE EQUILIBRIA, 2005, 230 (1-2) :121-130
12