2
0
2017
li
guo
0
journal
Original
Li, L.[Long]
Guo, Y.[Yafei]
Zhang, S.[Sisi]
Shen, M.[Mengmeng]
Deng, T.[Tianlong]
Fluid Phase Equilib.
2017
2020-09-29
Phase equilibria in the aqueous ternary systems (LiCl + LiBO2 + H2O) and (Li2SO4+ LiBO2 + H2O) at 323.15 K and 0.1 MPa
Combining the methods of isothermal dissolution equilibrium and the wet-residue solid phase (Schreinemarkers rule), the phase equilibria of the ternary systems (LiCl + LiBO2 + H2O) and (Li2SO4+ LiBO2 + H2O) at 323.15 K and 0.1 MPa were investigated. On the basis of the experimental data on solubilities and the physicochemical properties including density, refractive index and pH values, the phase diagrams and physicochemical properties versus composition diagrams in the two systems were also plotted. For the two systems, there are both in one invariant point, two univariant curves, and two crystallization regions corresponding to lithium metaborate dehydrate (LiBO2*2H2O, Lb2), lithium chloride monohydrate (LiCl*H2O i.e. Lc1, in the former) and lithium sulfate monohydrate (Li2SO4*H2O i.e. Ls1, in the later), and the area of the crystallization region of Lb2 is the largest when compared with those of Lc1 and Ls1, and those results demonstrate that the solubility of lithium metaborate is the lowest. A comparison of the phase diagrams between this work at 323.15 K and the literature at (288.15, 298.15 and 308.15) K in the former system, the crystallization region of LiBO2*8H2O existed at 288.15, 298.15 and 308.15 K is disappeared at 323.15 K. Relationships between solubility and temperature for LiBO2 and LiCl are both in positive correlation obviously. However, a comparison of the phase diagrams between this work at 323.15 K and the literature at (288.15, 298.15) K in the later system, it was found that the mineral LiBO2*8H2O existed at 288.15, 298.15 K is replaced by LiBO2*2H2O, and the component of Li2SO4 in the solution has a relatively strong salting-out effect to LiBO2, and the concentrations of LiBO2 in the solution are decreased considerably with the increasing of lithium sulfate concentration in the solution. The calculated values of refractive index using empirical equations for the two ternary systems are in good agreement with the experimental values.
Phase equilibria
Lithium metaborate
Lithium chloride
Lithium sulfate
10.1016/j.fluid.2016.12.013
436
13-19
1
InChI=1S/ClH.Li/h1H;/q;+1/p-1
KWGKDLIKAYFUFQ-UHFFFAOYSA-M
lithium chloride
ClLi
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from melt
3
99.5
3
Acid-base titration
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 melt
3
99.8
3
(gravimetric)
3
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.9
3
Estimated by the compiler
4
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
99.8
3
(gravimetric)
1
1
1
3
1
4
1
Principal objective of the work
JWM
JWM
4/21/2017
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
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
1
Liquid
2
Mass fraction
4
Liquid
1
0
5
2
0.0781
3
1
1081.97
6
1
1.42
1
0.1235
4
2
0.0293
3
1
1094.64
6
1
4.8
1
0.1798
4
2
0.0214
3
1
1121.66
6
1
4.69
1
0.2174
4
2
0.0192
3
1
1142.1
6
1
4.79
1
0.2464
4
2
0.0189
3
1
1160.63
6
1
4.79
1
0.3192
4
2
0.0269
3
1
1214.67
6
1
4.72
1
0.3404
4
2
0.0357
3
1
1237.57
6
1
4.42
1
0.4189
4
2
0.0842
3
1
1331.77
6
1
4.27
1
0.4463
4
2
0.0988
3
1
1353.22
6
1
4.29
1
0.4726
4
2
0.0407
3
1
1310.42
6
1
3.94
1
0.4712
4
2
0.0127
3
1
1313.62
6
1
7.16
1
0.4723
4
2
0.015
3
1
1305.97
6
1
4.68
1
0.4724
4
2
0.0092
2
1
1335.39
6
1
7.94
1
0.4807
4
2
0
5
1
1296.46
6
1
7.16
2
1
1
3
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
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
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
1
Liquid
2
Mass fraction
4
Liquid
1
0
5
2
0.0781
3
1
1.3537
5
1
0.0005
1
0.1235
4
2
0.0293
3
1
1.365
5
1
0.0017
1
0.1798
4
2
0.0214
3
1
1.376
5
1
0.0017
1
0.2174
4
2
0.0192
3
1
1.3836
5
1
0.0016
1
0.2464
4
2
0.0189
3
1
1.3895
5
1
0.0016
1
0.3192
4
2
0.0269
3
1
1.4092
5
1
0.002
1
0.3404
4
2
0.0357
3
1
1.4127
5
1
0.0017
1
0.4189
4
2
0.0842
3
1
1.4462
5
1
0.0016
1
0.4463
4
2
0.0988
3
1
1.4542
5
1
0.0016
1
0.4726
4
2
0.0407
3
1
1.4422
5
1
0.0016
1
0.4712
4
2
0.0127
3
1
1.4417
5
1
0.0017
1
0.4723
4
2
0.015
3
1
1.4408
5
1
0.0014
1
0.4724
4
2
0.0092
2
1
1.4405
5
1
0.0019
1
0.4807
4
2
0
5
1
1.4388
5
1
0.0018
3
1
1
3
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
1
Mass fraction
Schreinemarkers rule
4
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Pressure, kPa
Liquid
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
1
Liquid
1
0
5
1
0.0781
3
1
0.0012
1
0.1235
4
1
0.0293
3
1
0.0026
1
0.1798
4
1
0.0214
3
1
0.0014
1
0.2174
4
1
0.0192
3
1
0.0012
1
0.2464
4
1
0.0189
3
1
0.0013
1
0.3192
4
1
0.0269
3
1
0.0016
1
0.3404
4
1
0.0357
3
1
0.0044
1
0.4189
4
1
0.0842
3
1
0.0045
1
0.4463
4
1
0.0988
3
1
0.004
4
1
1
3
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
1
Mass fraction
Schreinemaker's
4
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 2
1
Pressure, kPa
Liquid
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
1
Liquid
1
0.4463
4
1
0.0988
3
1
0.0012
1
0.4726
4
1
0.0407
3
1
0.0012
1
0.4712
4
1
0.0127
3
1
0.0012
1
0.4723
4
1
0.015
3
1
0.0012
1
0.4724
4
1
0.0092
2
1
0.0012
1
0.4807
4
1
0
5
5
3
1
2
1
4
1
Principal objective of the work
JWM
JWM
11/10/2016
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
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
2
Liquid
2
Mass fraction
4
Liquid
1
0
5
2
0.0781
3
1
1081.97
6
1
0.28
1
0.0303
3
2
0.0469
3
1
1100.77
6
1
0.87
1
0.0565
3
2
0.0637
3
1
1114.57
6
1
0.87
1
0.1182
4
2
0.0516
3
1
1159.41
6
1
0.97
1
0.1685
4
2
0.0463
3
1
1214.97
6
1
1.59
1
0.2075
4
2
0.0449
3
1
1239.11
6
1
1.81
1
0.2321
4
2
0.042
3
1
1260.39
6
1
2.13
1
0.2324
4
2
0.0426
3
1
1262.19
6
1
2.05
1
0.2401
4
2
0.0418
3
1
1267.57
6
1
2.13
1
0.2422
4
2
0.0365
3
1
1261.28
6
1
2.03
1
0.2491
4
2
0.0268
3
1
1251.01
6
1
1.88
1
0.2497
4
2
0.0143
3
1
1236.18
6
1
2
1
0.251
4
2
0
5
1
1215.27
6
1
1.2
6
3
1
2
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
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
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
2
Liquid
2
Mass fraction
4
Liquid
1
0
5
2
0.0781
3
1
1.3537
5
1
0.0004
1
0.0303
3
2
0.0469
3
1
1.357
5
1
0.0004
1
0.0565
3
2
0.0637
3
1
1.3592
5
1
0.0004
1
0.1182
4
2
0.0516
3
1
1.3659
5
1
0.0004
1
0.1685
4
2
0.0463
3
1
1.3725
5
1
0.0005
1
0.2075
4
2
0.0449
3
1
1.3786
5
1
0.0006
1
0.2321
4
2
0.042
3
1
1.3833
5
1
0.0004
1
0.2324
4
2
0.0426
3
1
1.3832
5
1
0.0004
1
0.2401
4
2
0.0418
3
1
1.3833
5
1
0.0004
1
0.2422
4
2
0.0365
3
1
1.383
5
1
0.0004
1
0.2491
4
2
0.0268
3
1
1.3799
5
1
0.0006
1
0.2497
4
2
0.0143
3
1
1.3768
5
1
0.0005
1
0.251
4
2
0
5
1
1.3722
5
1
0.0004
7
3
1
2
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
1
Mass fraction
Schreinemarkers
4
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Pressure, kPa
Liquid
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
2
Liquid
1
0
5
1
0.0781
3
1
0.0012
1
0.0303
3
1
0.0469
3
1
0.0012
1
0.0565
3
1
0.0637
3
1
0.0012
1
0.1182
4
1
0.0516
3
1
0.0012
1
0.1685
4
1
0.0463
3
1
0.0012
1
0.2075
4
1
0.0449
3
1
0.0012
1
0.2321
4
1
0.042
3
1
0.0012
1
0.2324
4
1
0.0426
3
1
0.0012
1
0.2401
4
1
0.0418
3
1
0.0012
8
3
1
2
1
4
1
Principal objective of the work
JWM
JWM
11/8/2016
1
Mass fraction
Schreinemarkers
4
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 2
1
Pressure, kPa
Liquid
101
3
2
Temperature, K
Liquid
323.15
5
1
Mass fraction
2
Liquid
1
0.2401
4
1
0.0418
3
1
0.0031
1
0.2422
4
1
0.0365
3
1
0.0022
1
0.2491
4
1
0.0268
3
1
0.0041
1
0.2497
4
1
0.0143
3
1
0.0126
1
0.251
4
1
0
5