2
0
2017
tey
gou
0
journal
Original
Teyssier, A.[Angelique]
Goundali, B. E.[Bahija El]
M., M. K.[Mohammed Kaddami]
Counioux, J.-J.[Jean-Jacques]
Goutaudier, C.[Christelle]
J. Chem. Eng. Data
2017
2020-09-29
Widespread Solid Solutions of Hexahydrated Cobalt and Nickel Nitrates: Solid Liquid Equilibria at 273.15 and 303.15 K and Characterization of Mixed Crystals of Homogeneous Composition
The isothermal solubility curves of the H2O Co(NO3)2 Ni(NO3)2 ternary system were studied at 273.15 and 303.15 K, using a synthetic method based on conductivity measurements. The analysis of the equilibrium phases composition was conducted by UV visible spectroscopy. The solid phases were first characterized by powder X-ray diffraction, which showed the formation of two substitutional solid solutions: Co(1-s)Nis(NO3)2*6H2O, which has a monoclinic structure, and Ni(1-)Co(NO3)2*6H2O, which has a triclinic structure. Then the evolution of the lattice parameters of the crystals at 303.15 K, depending on the solid solution composition, was studied by single-crystal X-ray diffraction. The shrinkage of the monoclinic lattice increases with the increase of the nickel ions in the structure. The stability area of this solid solution is very wide as more than 7 cobalt ions in 10 could be replaced by nickel ions. However, the variation of the lattice parameters of the triclinic solid solutions remains limited, although a small shift of the diffraction peaks is observed. This is consistent with a limited composition area of the triclinic solid solution, where less than 1 nickel ion in 10 could be replaced by cobalt ions.
solid-liquid equilibria
nickel and cobalt nitrate hexahydrate
solubility curves
characterisation of the solid solutions
evolution of the lattice parameters
10.1021/acs.jced.6b00795
3
62
980-987
1
InChI=1S/Co.2NO3/c;2*2-1(3)4/q+2;2*-1
UFMZWBIQTDUYBN-UHFFFAOYSA-N
cobalt(II) nitrate
cobaltous nitrate
nitric acid, cobalt(2+) salt
CoN2O6
1
Commercial source
1
99.4
3
Other types of titration
2
InChI=1S/2NO3.Ni/c2*2-1(3)4;/q2*-1;+2
KBJMLQFLOWQJNF-UHFFFAOYSA-N
nickel(II) nitrate
nickel nitrate (anhydrous)
N2NiO6
1
Commercial source
1
99.9
3
Other types of titration
3
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.8
3
Estimated by the compiler
1
3
1
1
1
2
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
UV Spectroscopy
1
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal of intercomponent compound 1
1
Temperature, K
Liquid
303.15
5
2
Pressure, kPa
Liquid
101
3
1
Mole fraction
2
Liquid
1
0.0894
3
1
0.0021
2
1
0.0019
1
0.0793
3
1
0.0149
3
1
0.002
1
0.0754
3
1
0.0211
3
1
0.0023
2
3
1
1
1
2
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
UV Spectroscopy
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
303.15
5
2
Pressure, kPa
Liquid
101
3
1
Mole fraction
2
Liquid
1
0.0754
3
1
0.0211
3
1
0.0016
1
0.069
3
1
0.0265
3
1
0.0017
1
0.0662
3
1
0.0304
3
1
0.0017
1
0.0582
3
1
0.0378
3
1
0.0017
1
0.0493
3
1
0.0482
3
1
0.0016
1
0.0315
3
1
0.0625
3
1
0.0016
1
0.0084
2
1
0.0848
3
1
0.0017
3
3
1
1
1
2
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
Titration method
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
273.15
5
2
Pressure, kPa
Liquid
101
3
1
Mole fraction
1
Liquid
1
0.0329
3
1
0.0462
3
1
0.0011
1
0.0248
3
1
0.0535
3
1
0.0017
1
0.0223
3
1
0.0557
3
1
0.0013
1
0.0174
3
1
0.0594
3
1
0.0013
1
0.0106
3
1
0.0645
3
1
0.0013
1
0.0038
2
1
0.0695
3
1
0.0016
1
0
5
1
0.078
3
1
0.001
1
0.0266
3
1
0.0499
3
1
0.0016
1
0.0346
3
1
0.0456
3
1
0.0013
4
3
1
1
1
2
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
Titration method
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
273.15
5
2
Pressure, kPa
Liquid
101
3
1
Mole fraction
2
Liquid
1
0
5
1
0.0751
3
1
0.001
1
0.0071
2
1
0.0711
3
1
0.0012
1
0.0115
3
1
0.0688
3
1
0.0014
1
0.0216
3
1
0.0576
3
1
0.0016
1
0.0281
3
1
0.049
3
1
0.0014
1
0.036
3
1
0.0431
3
1
0.0013
1
0.0456
3
1
0.0346
3
1
0.0016
1
0.0406
3
1
0.0388
3
1
0.0016
5
3
1
1
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
Titration method
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
Pressure, kPa
Liquid
1
273.15
5
2
101
3
1
0.0751
3
1
0.001
6
3
1
2
1
Principal objective of the work
EP
EP
1/20/2017
1
Mole fraction
Titration method
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
Pressure, kPa
Liquid
1
273.15
5
2
101
3
1
0.078
3
1
0.001