ABSTRACT

Phase equilibrium data in the ternary system (Na2SO4 + Li2SO4 + H2O) at 308.15 K and 313.15 K 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 308.15 K and 313.15 K. 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.

Compounds

#	Formula	Name
1	Na2O4S	sodium sulfate
2	H2Li2O5S	dilithium sulfate monohydrate
3	H2O	water

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	isothermal dissolution	7
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	isothermal dissolution	13
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	isothermal dissolution	10
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	isothermal dissolution	6
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 2 Crystal of intercomponent compound 1	isothermal dissolution	2
POMD	3 1 2	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 2 Crystal of intercomponent compound 1	isothermal dissolution	2
POMD	3 1 2	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 2 Crystal of intercomponent compound 1	isothermal dissolution	2
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 2 Crystal of intercomponent compound 1	isothermal dissolution	2
POMD	3 1 2	Mass fraction - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1 Crystal of intercomponent compound 1	isothermal dissolution	2
POMD	3 1 2	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1 Crystal of intercomponent compound 1	isothermal dissolution	2

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

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

Ji, Z.-Y.[Zhi-Yong], Peng, J.-L.[Jing-Ling], Yuan, J.-S.[Jun-Sheng], Li, D.-C.[Dong-Chan], Zhao, Y.-Y.[Ying-Ying]

ABSTRACT