Email this article Solid–Liquid Metastable Phase Equilibria in the Ternary System (MgCl2 + MgSO4 + H2O) at 323.15 K
- Authors: Meng L.1,2,3, Li D.2, Guo Y.1,3, Deng T.1
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Affiliations:
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Sciences
- School of Chemistry and Chemical Engineering
- CAS Key Libratory of Salt Lake Resources and Chemistry
- Issue: Vol 63, No 10 (2018)
- Pages: 1363-1367
- Section: Physicochemical Analysis of Inorganic Systems
- URL: https://bakhtiniada.ru/0036-0236/article/view/169055
- DOI: https://doi.org/10.1134/S0036023618100121
- ID: 169055
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Abstract
The solubilities and the densities in the aqueous ternary system (MgCl2 + MgSO4 + H2O) at 323.15 K were determined by the isothermal evaporation method. The phase diagram was drawn for this system at 323.15 K. The phase diagram consists of two invariant points, three univariant curves, and three crystallization regions corresponding to bischofite (MgCl2 · 6H2O), tetrahydrate (MgSO4 · 4H2O) and hexahydrite (MgSO4 · 6H2O). Neither double salts nor solid solution was found. Based on the Pitzer and Harvie–Weare (HW) model, the solubility equilibrium constants for the salts were fitted with the solubilities in this research work, and the solubilities of the ternary system at 323.15 K were calculated. Comparisons between the calculated and measured solubilities show that the predicted data agree well with the experimental results.
About the authors
Ling-zong Meng
Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Sciences; School of Chemistry and Chemical Engineering; CAS Key Libratory of Salt Lake Resources and Chemistry
Author for correspondence.
Email: menglingzong@lyu.edu.cn
China, Tianjin, 300457; Linyi, 276000; Xining, 810008
Dan Li
School of Chemistry and Chemical Engineering
Email: menglingzong@lyu.edu.cn
China, Linyi, 276000
Ya-fei Guo
Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Sciences; CAS Key Libratory of Salt Lake Resources and Chemistry
Email: menglingzong@lyu.edu.cn
China, Tianjin, 300457; Xining, 810008
Tian-long Deng
Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Sciences
Email: menglingzong@lyu.edu.cn
China, Tianjin, 300457
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