A phase stability analysis of the combinatorial term of the UNIQUAC model

被引：5

作者：

Abreu, CRA ^{[1
]}

Castier, M ^{[1
]}

Tavares, FW ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Escola Quim, BR-21949900 Rio De Janeiro, Brazil

来源：

CHEMICAL ENGINEERING SCIENCE | 1999年 / 54卷 / 07期

关键词：

phase equilibria; phase stability; excess free energy models; UNIQUAC; UNIFAC; polymers;

D O I：

10.1016/S0009-2509(98)00282-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The conditions for the onset of liquid-phase instability in the combinatorial contribution of UNIQUAC are discussed. A peculiar and non-physical aspect of this predicted instability is that it is independent of temperature. It is recognized that by renormalizing the r and q parameters, this type of phase transition can be prevented. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：893 / 896

页数：4

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