Phase equilibria in system LiCl–NaCl–H2O at 308 and 348 K


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Resumo

The solubilities and densities of the solutions in the ternary system LiCl–NaCl–H2O at 308 and 348 K were determined by the method of isothermal dissolution equilibrium. There are one invariant point, two univariant isotherm dissolution curves, and two crystallization regions corresponding to monohydrate (LiCl · H2O) and NaCl, respectively. This system at both temperatures belongs to hydrate type I, and neither double salt nor solid solution was found. A comparison of the phase diagram for the ternary system at 273–348 K shows that the area of crystallization region of LiCl · H2O is decreased with the increasing of temperature, while that of NaCl is increased obviously. The solution density of the ternary system at two temperatures changes regularly with the increasing of LiCl concentration.

Sobre autores

Shi-qiang Wang

College of Chemical Engineering and Materials Science; Tianjin Key Laboratory of Marine Resources and Chemistry

Autor responsável pela correspondência
Email: wangshiqiang@tust.edu.cn
República Popular da China, Tianjin, 300457; Tianjin, 300457

Ya-fei Guo

College of Chemical Engineering and Materials Science; Tianjin Key Laboratory of Marine Resources and Chemistry

Email: wangshiqiang@tust.edu.cn
República Popular da China, Tianjin, 300457; Tianjin, 300457

Dong-fang Liu

College of Chemical Engineering and Materials Science

Email: wangshiqiang@tust.edu.cn
República Popular da China, Tianjin, 300457

Tian-long Deng

College of Chemical Engineering and Materials Science; Tianjin Key Laboratory of Marine Resources and Chemistry

Email: wangshiqiang@tust.edu.cn
República Popular da China, Tianjin, 300457; Tianjin, 300457

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