Thermodynamic assessment of the KCl -K2CO3 -NaCl -Na2CO3 system

Phase equilibria and thermodynamic properties of the KCl-K2CO3-NaCl-Na2CO3 system were analyzed on the basis of the thermodynamic evaluation of the KCl-NaCl,KCl-K2CO3,NaCl-Na2CO3,K2CO3-Na2CO3 and KCl-K2CO3-NaCl-Na2CO3 systems. The Gibbs energies of individual phases was approximated by two-sublattic...

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Bibliographic Details
Published inCalphad Vol. 31; no. 2; pp. 155 - 163
Main Authors YAOKAWA, Jun, OIKAWA, Katsunari, ANZAI, Koichi
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier 01.06.2007
Subjects
Chemistry
Exact sciences and technology
General and physical chemistry
Phase equilibria
Salt
Potassium Carbonates
Phase diagram
Ionic solution
Potassium Chlorides
Sodium carbonate
CALPHAD
Thermodynamic properties
Sodium chloride
Quaternary system
Phase equilibrium
Thermodynamic
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Summary:Phase equilibria and thermodynamic properties of the KCl-K2CO3-NaCl-Na2CO3 system were analyzed on the basis of the thermodynamic evaluation of the KCl-NaCl,KCl-K2CO3,NaCl-Na2CO3,K2CO3-Na2CO3 and KCl-K2CO3-NaCl-Na2CO3 systems. The Gibbs energies of individual phases was approximated by two-sublattice models for ionic liquids and crystals. Most of the experimental information was well described by the present set of thermodynamic parameters. The lowest monovariant eutectic temperature in the KCl-NaCl-Na2CO3 system is located at 573C, with a composition of XNa2CO3=0.31,XKCl=0.35 and XNaCl=0.34.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0364-5916
1873-2984
DOI:10.1016/j.calphad.2007.01.004