Calculation of Excess Entropy for Binary Liquid Mixtures by the NRTL and UNIQUAC Models

Yaşar Demirel

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Isothermal excess entropy data for 23 binary liquid mixtures were calculated using the excess Gibbs energy and excess enthalpy correlations obtained from the local composition models of NRTL and UNIQUAC. The mixtures include highly nonideal, associating, and partially miscible systems. Temperature-dependent parameters of the models were used in the calculations. The experimental data of excess Gibbs energy and excess enthalpy, which were base of excess entropy data, covers the temperature range of 288.15–358.15 K. The average absolute relative deviations of the excess entropy data calculations were obtained as 7.34 and 8.51% for the NRTL and UNIQUAC models, respectively. Excess entropy data at isobaric conditions were also calculated using excess heat capacity data for eight binary liquid mixtures in the range of 238.15–318.15 K. Temperature-dependent parameters estimated directly from excess heat capacity data were used in the calculations which gave the average absolute relative deviations of 10.91 and 12.76% for the NRTL and UNIQUAC models, respectively.

Original languageEnglish (US)
Pages (from-to)2875-2878
Number of pages4
JournalIndustrial and Engineering Chemistry Research
Volume33
Issue number11
DOIs
StatePublished - Nov 1 1994

Fingerprint

Entropy
Liquids
Gibbs free energy
Specific heat
Enthalpy
Temperature
Chemical analysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Calculation of Excess Entropy for Binary Liquid Mixtures by the NRTL and UNIQUAC Models. / Demirel, Yaşar.

In: Industrial and Engineering Chemistry Research, Vol. 33, No. 11, 01.11.1994, p. 2875-2878.

Research output: Contribution to journalArticle

@article{2d436f9ee22144d2bed832b94f40e38b,
title = "Calculation of Excess Entropy for Binary Liquid Mixtures by the NRTL and UNIQUAC Models",
abstract = "Isothermal excess entropy data for 23 binary liquid mixtures were calculated using the excess Gibbs energy and excess enthalpy correlations obtained from the local composition models of NRTL and UNIQUAC. The mixtures include highly nonideal, associating, and partially miscible systems. Temperature-dependent parameters of the models were used in the calculations. The experimental data of excess Gibbs energy and excess enthalpy, which were base of excess entropy data, covers the temperature range of 288.15–358.15 K. The average absolute relative deviations of the excess entropy data calculations were obtained as 7.34 and 8.51{\%} for the NRTL and UNIQUAC models, respectively. Excess entropy data at isobaric conditions were also calculated using excess heat capacity data for eight binary liquid mixtures in the range of 238.15–318.15 K. Temperature-dependent parameters estimated directly from excess heat capacity data were used in the calculations which gave the average absolute relative deviations of 10.91 and 12.76{\%} for the NRTL and UNIQUAC models, respectively.",
author = "Yaşar Demirel",
year = "1994",
month = "11",
day = "1",
doi = "10.1021/ie00035a043",
language = "English (US)",
volume = "33",
pages = "2875--2878",
journal = "Industrial & Engineering Chemistry Research",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "11",

}

TY - JOUR

T1 - Calculation of Excess Entropy for Binary Liquid Mixtures by the NRTL and UNIQUAC Models

AU - Demirel, Yaşar

PY - 1994/11/1

Y1 - 1994/11/1

N2 - Isothermal excess entropy data for 23 binary liquid mixtures were calculated using the excess Gibbs energy and excess enthalpy correlations obtained from the local composition models of NRTL and UNIQUAC. The mixtures include highly nonideal, associating, and partially miscible systems. Temperature-dependent parameters of the models were used in the calculations. The experimental data of excess Gibbs energy and excess enthalpy, which were base of excess entropy data, covers the temperature range of 288.15–358.15 K. The average absolute relative deviations of the excess entropy data calculations were obtained as 7.34 and 8.51% for the NRTL and UNIQUAC models, respectively. Excess entropy data at isobaric conditions were also calculated using excess heat capacity data for eight binary liquid mixtures in the range of 238.15–318.15 K. Temperature-dependent parameters estimated directly from excess heat capacity data were used in the calculations which gave the average absolute relative deviations of 10.91 and 12.76% for the NRTL and UNIQUAC models, respectively.

AB - Isothermal excess entropy data for 23 binary liquid mixtures were calculated using the excess Gibbs energy and excess enthalpy correlations obtained from the local composition models of NRTL and UNIQUAC. The mixtures include highly nonideal, associating, and partially miscible systems. Temperature-dependent parameters of the models were used in the calculations. The experimental data of excess Gibbs energy and excess enthalpy, which were base of excess entropy data, covers the temperature range of 288.15–358.15 K. The average absolute relative deviations of the excess entropy data calculations were obtained as 7.34 and 8.51% for the NRTL and UNIQUAC models, respectively. Excess entropy data at isobaric conditions were also calculated using excess heat capacity data for eight binary liquid mixtures in the range of 238.15–318.15 K. Temperature-dependent parameters estimated directly from excess heat capacity data were used in the calculations which gave the average absolute relative deviations of 10.91 and 12.76% for the NRTL and UNIQUAC models, respectively.

UR - http://www.scopus.com/inward/record.url?scp=0028544662&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028544662&partnerID=8YFLogxK

U2 - 10.1021/ie00035a043

DO - 10.1021/ie00035a043

M3 - Article

AN - SCOPUS:0028544662

VL - 33

SP - 2875

EP - 2878

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

SN - 0888-5885

IS - 11

ER -