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Solubilities, Densities, Refractive Indices, and pH Values in the Ternary Systems (Li2SO4 + Li2CO3 + H2O) and (LiCl + Li2CO3 + H2O) at 308.15 K

Wang, Danyang ; He, Jiaying ; Jiang, Jie ; Guo, Ya-fei ; Wang, Shi-qiang

Russian Journal of Physical Chemistry A, 2023-06, Vol.97 (6), p.1102-1107 [Periódico revisado por pares]

Moscow: Pleiades Publishing

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  • Título:
    Solubilities, Densities, Refractive Indices, and pH Values in the Ternary Systems (Li2SO4 + Li2CO3 + H2O) and (LiCl + Li2CO3 + H2O) at 308.15 K
  • Autor: Wang, Danyang ; He, Jiaying ; Jiang, Jie ; Guo, Ya-fei ; Wang, Shi-qiang
  • Assuntos: Brines ; Chemical Thermodynamics and Thermochemistry ; Chemistry ; Chemistry and Materials Science ; Crystallization ; Liquid phases ; Lithium ; Lithium carbonate ; Lithium chloride ; Phase equilibria ; Physical Chemistry ; Refractivity ; Salt lakes ; Salting ; Solubility ; Ternary systems
  • É parte de: Russian Journal of Physical Chemistry A, 2023-06, Vol.97 (6), p.1102-1107
  • Descrição: Solid–liquid phase equilibria of the ternary system (Li 2 SO 4 + Li 2 CO 3 + H 2 O) and (LiCl + Li 2 CO 3  + H 2 O) are very important for the separation of lithium salts from the salt lake brines. In this paper, the experimental solubilities, densities, refractive indices, and pH values of the ternary systems (Li 2 SO 4  + Li 2 CO 3 + H 2 O) and (LiCl + Li 2 CO 3 + H 2 O) at 308.15 K and 0.1 MPa were investigated with the method of isothermal dissolution equilibrium. In ternary system Li 2 SO 4 + Li 2 CO 3 + H 2 O, there are one eutectic point and two crystallization regions corresponding to the large area of Li 2 CO 3 and the relative small area of Li 2 SO 4 ⋅H 2 O, respectively. In ternary system LiCl + Li 2 CO 3 + H 2 O, there are also one eutectic point and two crystallization regions corresponding to Li 2 CO 3 and LiCl⋅H 2 O. Lithium chloride has a strong salting-out effect to lithium carbonate. The crystallization region of Li 2 CO 3 was the largest, indicating Li 2 CO 3 could be easily crystallized and separated from brines. The variation trend of solution densities, refractive indices and pH values in the two ternary systems are similar and change regularly with the increasing of the concentration of lithium sulfate or lithium chloride.
  • Editor: Moscow: Pleiades Publishing
  • Idioma: Inglês
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