Solubility in the Ternary Water–Salt System GdCl3–TbCl3–H2O at 25°С

Nikolay A. Charykov, A. A. Gur’eva, Герман Валерия Павловна, В. А. Кескинов, A. V. Rumyantsev, Konstantin N. Semenov, N. A. Kulenova, Marzhan Anuarbekovna Sadenova, L. V. Shushkevich, D. G. Letenko

1 more author

M. Yu. Matuzenko

2023

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DOI 10.31857/s0044453723070051

Data confidence 70 medium

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Abstract

The solubility diagram of the ternary system GdCl3–TbCl3–H2O is studied by means of isothermal saturation in ampules at 25°С. A continuous series of solid solutions of isovalent substitution crystallizes in the system GdxTb1−xCl3⋅6H2O.GdTb1−Cl3⋅6H2O. The diagram of solubility in the three-component system GdCl3–TbCl3–H2O at 25°C is calculated according to the classical Pitzer model. Results from experiments agree convincingly with ones from thermodynamic modeling.