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


Charykov N.A. Gur’eva A.A. German V.P. Keskinov V.A. Rumyantsev A.V. Semenov K.N. Kulenova N.A. Sadenova M.A. Shushkevich L.V. Letenko D.G. Matuzenko M.Y.
July 2023Pleiades Publishing

Russian Journal of Physical Chemistry A
2023#97Issue 71431 - 1437 pp.

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 GdClxTb1-xCl3.6H2O. 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.

gadolinium chloride , Pitzer model , solid solutions , solubility diagram , terbium chloride

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St. Petersburg State Technological Institute (Technical University), St. Petersburg, 190013, Russian Federation
Veritas Center, Serikbaev East Kazakhstan State Technical University, Ust-Kamenogorsk, 070004, Kazakhstan
St. Petersburg State Electrotechnical University (LETI), St. Petersburg, 197376, Russian Federation
Pavlov First St. Petersburg State University, St. Petersburg, 197022, Russian Federation
St. Petersburg State University of Architecture and Civil Engineering, St. Petersburg, 190005, Russian Federation

St. Petersburg State Technological Institute (Technical University)
Veritas Center
St. Petersburg State Electrotechnical University (LETI)
Pavlov First St. Petersburg State University
St. Petersburg State University of Architecture and Civil Engineering

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