Simultaneous correlation of excess gibbs energy and enthalpy of mixing by the UNIQUAC Equation

Yasar Demirel; Hatice Gecegörmez

doi:10.1002/cjce.5450670316

Simultaneous correlation of excess gibbs energy and enthalpy of mixing by the UNIQUAC Equation

Yasar Demirel, Hatice Gecegörmez

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26 Scopus citations

Abstract

Using data for excess Gibbs energy, g^E, and enthalpy of mixing, h^E, temperature dependent parameters of the UNIQUAC equation have been estimated for twenty four systems of binary mixtures. Fifteen of them include data for g^E and h^E at more than one different isotherm. These parameters are later tested in predicting the g^E and h^E data simultaneously and representing the effect of temperature on such data. The UNIQUAC equation with temperature dependent parameters represents larger values of maximum heat of mixing than does the UNIQUAC equation with the parameters independent of temperature.

Original language	English (US)
Pages (from-to)	455-461
Number of pages	7
Journal	The Canadian Journal of Chemical Engineering
Volume	67
Issue number	3
DOIs	https://doi.org/10.1002/cjce.5450670316
State	Published - Jun 1989
Externally published	Yes

Keywords

UNIQUAC parameters
excess Gibbs energy
mixing enthalpy
temperature dependent parameters

ASJC Scopus subject areas

General Chemical Engineering

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10.1002/cjce.5450670316

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title = "Simultaneous correlation of excess gibbs energy and enthalpy of mixing by the UNIQUAC Equation",

abstract = "Using data for excess Gibbs energy, gE, and enthalpy of mixing, hE, temperature dependent parameters of the UNIQUAC equation have been estimated for twenty four systems of binary mixtures. Fifteen of them include data for gE and hE at more than one different isotherm. These parameters are later tested in predicting the gE and hE data simultaneously and representing the effect of temperature on such data. The UNIQUAC equation with temperature dependent parameters represents larger values of maximum heat of mixing than does the UNIQUAC equation with the parameters independent of temperature.",

keywords = "UNIQUAC parameters, excess Gibbs energy, mixing enthalpy, temperature dependent parameters",

author = "Yasar Demirel and Hatice Geceg{\"o}rmez",

year = "1989",

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N2 - Using data for excess Gibbs energy, gE, and enthalpy of mixing, hE, temperature dependent parameters of the UNIQUAC equation have been estimated for twenty four systems of binary mixtures. Fifteen of them include data for gE and hE at more than one different isotherm. These parameters are later tested in predicting the gE and hE data simultaneously and representing the effect of temperature on such data. The UNIQUAC equation with temperature dependent parameters represents larger values of maximum heat of mixing than does the UNIQUAC equation with the parameters independent of temperature.

AB - Using data for excess Gibbs energy, gE, and enthalpy of mixing, hE, temperature dependent parameters of the UNIQUAC equation have been estimated for twenty four systems of binary mixtures. Fifteen of them include data for gE and hE at more than one different isotherm. These parameters are later tested in predicting the gE and hE data simultaneously and representing the effect of temperature on such data. The UNIQUAC equation with temperature dependent parameters represents larger values of maximum heat of mixing than does the UNIQUAC equation with the parameters independent of temperature.

KW - UNIQUAC parameters

KW - excess Gibbs energy

KW - mixing enthalpy

KW - temperature dependent parameters

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Simultaneous correlation of excess gibbs energy and enthalpy of mixing by the UNIQUAC Equation

Abstract

Keywords

ASJC Scopus subject areas

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