Measurement and prediction of solid-liquid phase equilibria for diamine plus n-heptane, or cyclohexane

被引：10

作者：

Allal, F ^{[1
]}

Dahmani, A ^{[1
]}

机构：

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

来源：

FLUID PHASE EQUILIBRIA | 2001年 / 190卷 / 1-2期

关键词：

data; solid-liquid equilibria; diamines; model; n-heptane; cyclohexane; DISQUAC; UNIFAC;

D O I：

10.1016/S0378-3812(01)00568-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solid-liquid equilibria (SLE) of N,N,N',N'-tetramethylethylenediamine, 1,4-dimethylpiperazine and N,N-dimethylaniline + n-heptane or cyclohexane mixtures were measured by a static method. It was found that all systems are simple eutectic systems. Group contribution models have proved fairly successful in predicting SLE, however, the presence of intramolecular effects (ring effect, proximity effect) renders the widely used empirical methods quite inaccurate. However, in this work, the experimental phase diagrams compared satisfactorily with group contribution models (DISQUAC) and also modified UNIFAC (Dortmund version) predictions. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：33 / 45

页数：13

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