2
0
2017
guo
li
0
journal
Original
Guo, Y.[Yafei]
Li, L.[Long]
Cao, L.[Lina]
Yu, X.[Xiaoping]
Wang, S.[Shiqiang]
Deng, T.[Tianlong]
J. Chem. Eng. Data
2017
2020-09-29
Solubilities, Densities and Refractive Indices in the Aqueous Quaternary System of Lithium Sulfate, Lithium Metaborate, and Lithium Carbonate at 288.15, 298.15, 308.15 K and 0.1 MPa
Solubilities, densities and refractive indices of the aqueous quaternary system of lithium sulfate, lithium metaborate and lithium carbonate at 288.15, 298.15, 308.15 K and 0.1MPa were determined with isothermal dissolution method. According to the experimental results, the dry-salt phase diagrams, water-phase diagrams and the diagrams of physicochemical properties including density, pH, refractive index versus composition of lithium sulfate at three temperatures were plotted. In the dry-salt phase diagrams at three temperatures, there are all in four crystallization regions corresponding to lithium metaborate octahydrate (LiBO2*8H2O, LB), lithium carbonate (Li2CO3, LC) and lithium sulfate monohydrate (Li2SO4*H2O, LS), and three univariant-solubility curves corresponding to minerals of LS, LB and LC, and one invariant point of three co-existed minerals (LS + LB + LC). A comparison of the phase diagrams at 288.15, 298.15 and 308.15 K shows that the areas of lithium sulfate monohydrate and lithium metaborate octahydrate are decreased obviously and the area of lithium carbonate region is increased significantly with the increasing of temperature from 288.15 to 308.15 K. Physicochemical properties of density and refractive index in the quaternary system change regularly with the increasing of temperature and the dry-salt composition of Li2SO4 (g/100 g*S) in the solution. With the increasing of Li2SO4 (g/100 g*S) in the solution, density and refractive index are increased firstly to reach the maximum values at the invariant points of three co-existed minerals and then decreased sharply. The calculated values of densities and refractive indices in the quaternary system at three temperatures with the empirical equations are in good agreement with the experimental values.
phase equilibria
solubility
lithium sulfate
lithium metaborate
lithium carbonate
10.1021/acs.jced.6b00777
1
62
508-515
1
InChI=1S/BO2.Li/c2-1-3;/q-1;+1
HZRMTWQRDMYLNW-UHFFFAOYSA-N
lithium metaborate
BLiO2
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
3
99.5
3
(gravimetric method for BO2-)
2
InChI=1S/2Li.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
INHCSSUBVCNVSK-UHFFFAOYSA-L
lithium sulfate
Li2O4S
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
3
99.8
3
(gravimetric method for SO42-)
3
InChI=1S/CH2O3.2Li/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
XGZVUEUWXADBQD-UHFFFAOYSA-L
lithium carbonate
CLi2O3
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
3
99.8
3
Other types of titration
4
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.8
3
Estimated by the compiler
1
4
1
2
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass fraction
gravimetry and titration
2
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Pressure, kPa
Liquid
1
308.15
5
2
0.0348
3
3
100
1
1
0.2423
4
1
0.0013
2
4
1
2
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass fraction
gravimetry and titration
1
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 2
1
Temperature, K
Liquid
2
Mass fraction
2
Liquid
3
Pressure, kPa
Liquid
1
308.15
5
2
0.2423
4
3
100
1
1
0.0348
3
1
0.0012
3
4
1
2
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
2
Liquid
4
Pressure, kPa
Liquid
1
308.15
5
2
0.0348
3
3
0.2423
4
4
100
1
1
1256.99
6
1
1.08
4
4
1
2
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Refractive index (Na D-line)
Standard Abbe refractometry
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
2
Liquid
4
Pressure, kPa
Liquid
1
308.15
5
2
0.0348
3
3
0.2423
4
4
100
1
1
1.3892
5
1
0.002
5
3
1
4
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass fraction
gravimetry and titration
3
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Pressure, kPa
Liquid
1
308.15
5
2
0.0595
3
3
100
1
1
0.00112
3
1
0.00112
6
3
1
4
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass fraction
gravimetry and titration
1
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
3
1
Temperature, K
Liquid
2
Mass fraction
3
Liquid
3
Pressure, kPa
Liquid
1
308.15
5
2
0.00112
3
3
100
1
1
0.0595
3
1
0.0012
7
3
1
4
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
3
Liquid
4
Pressure, kPa
Liquid
1
308.15
5
2
0.0595
3
3
0.00112
3
4
100
1
1
1061.28
6
1
1.05
8
3
1
4
1
1
1
Principal objective of the work
EP
EP
12/7/2016
1
Refractive index (Na D-line)
Standard Abbe refractometry
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
3
Liquid
4
Pressure, kPa
Liquid
1
308.15
5
2
0.0595
3
3
0.00112
3
4
100
1
1
1.3572
5
1
0.002
9
3
1
4
1
2
1
Principal objective of the work
EP
EP
12/7/2016
1
Mass fraction
gravimetry and titration
3
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
3
1
Pressure, kPa
Liquid
100
1
1
Temperature, K
Liquid
2
Mass fraction
2
Liquid
1
288.15
5
2
0.2594
4
1
0.008
3
1
0.0072
1
298.15
5
2
0.2579
4
1
0.0073
3
1
0.00729
1
308.15
5
2
0.2504
4
1
0.00074
2
1
0.00074
10
3
1
4
1
2
1
Principal objective of the work
EP
EP
11/21/2016
1
Mass fraction
gravimetry and titration
2
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Pressure, kPa
Liquid
100
1
1
Temperature, K
Liquid
2
Mass fraction
3
Liquid
1
288.15
5
2
0.008
3
1
0.2594
4
1
0.0013
1
298.15
5
2
0.0073
3
1
0.2579
4
1
0.0013
1
308.15
5
2
0.00074
2
1
0.2504
4
1
0.0013
11
3
1
4
1
2
1
Principal objective of the work
SAM
XXX
11/21/2016
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
100
1
1
Temperature, K
Liquid
2
Mass fraction
2
Liquid
3
Mass fraction
3
Liquid
1
288.15
5
2
0.2594
4
3
0.008
3
1
1238.45
6
1
1.39
1
298.15
5
2
0.2579
4
3
0.0073
3
1
1232.44
6
1
1.5
1
308.15
5
2
0.2504
4
3
0.00074
2
1
1222.94
6
1
1.07
12
3
1
4
1
2
1
Principal objective of the work
SAM
XXX
11/21/2016
1
Refractive index (Na D-line)
Standard Abbe refractometry
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
100
1
1
Temperature, K
Liquid
2
Mass fraction
2
Liquid
3
Mass fraction
3
Liquid
1
288.15
5
2
0.2594
4
3
0.008
3
1
1.3812
5
1
0.002
1
298.15
5
2
0.2579
4
3
0.0073
3
1
1.3759
5
1
0.0029
1
308.15
5
2
0.2504
4
3
0.00074
2
1
1.3812
5
1
0.002