Experimental determination and prediction of (solid plus liquid) phase equilibria for binary mixtures of heavy alkanes and fatty acids

被引：19

作者：

Benziane, Mokhtar ^{[1
,2
]}

Khimeche, Kamel ^{[1
]}

Dahmani, Abdellah ^{[3
]}

Nezar, Sawsen ^{[1
]}

Trache, Djalal ^{[1
]}

机构：

[1] EMP, Algiers, Algeria

[2] Ecole Super Mat, Algiers, Algeria

[3] USTHB, Fac Chim, Lab Thermodynam & Modelisat Mol, Bab Ezzouar 16111, Alger, Algeria

来源：

MOLECULAR PHYSICS | 2012年 / 110卷 / 11-12期

关键词：

DSC; solid-liquid equilibria; alkane; fatty acid; UNIFAC and UNIQUAC models; MODIFIED UNIFAC; N-ALKANES; PARAMETER; SYSTEMS; MODEL; DIAGRAMS;

D O I：

10.1080/00268976.2011.650229

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：

Solid-liquid equilibria for three binary mixtures, n-Eicosane (1) +Lauric acid (2), n-Tetracosane (1) +Stearic acid (2), and n-Octacosane (1) +Palmitic acid (2), were measured using a differential scanning calorimeter. Simple eutectic behaviour was observed for these systems. The experimental results were correlated by means of the modified UNIFAC (Larsen and Gmehling versions), UNIQUAC and ideal models. The root-mean-square deviations of the solubility temperatures for all measured data vary from 0.26 to 3.15 K and depend on the particular model used. The best solubility correlation was obtained with the UNIQUAC model.

引用

收藏

页码：1383 / 1389

页数：7

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