Stable phase equilibria in the ternary system (Na2SO4+Li2SO4+H2O) at 308.15K and 313.15K

Phase equilibrium data in the ternary system (Na2SO4+Li2SO4+H2O) at 308.15K and 313.15K were measured using the isothermal dissolution method, and the corresponding stable phase diagrams were plotted. The results showed that there were three invariant points, four univariant curves and four crystall...

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Bibliographic Details
Published in:Fluid phase equilibria 2015-07, Vol.397, p.81-86
Main Authors: Ji, Zhi-Yong, Peng, Jing-Ling, Yuan, Jun-Sheng, Li, Dong-Chan, Zhao, Ying-Ying
Format: Article
Language:English
Subjects:
Crystallization
Fluid dynamics
Fluid flow
Invariants
Lithium sulfate
Phase diagrams
Phase equilibria
Sodium sulfate
Solid solutions
Solubility
Ternary systems
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Summary:Phase equilibrium data in the ternary system (Na2SO4+Li2SO4+H2O) at 308.15K and 313.15K were measured using the isothermal dissolution method, and the corresponding stable phase diagrams were plotted. The results showed that there were three invariant points, four univariant curves and four crystallization regions: Li2SO4·H2O (Ls), LiNa(SO4) (Db1), Na3Li(SO4)2·6H2O (Db2), and Na2SO4 (Th); and no solid solution was found in the ternary system at 308.15K and 313.15K. A comparison of the stable phase diagrams for the ternary system at different temperature indicates that the areas of the crystallization regions of Th and Db1 are increased with the increase of temperature, and the one belonging to Db2 is disappeared along with the increase of temperature.
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2015.03.052