Studies on the Stable Phase Equilibria of Quinary System Li+, K+, Mg2+//Cl–, $${{{\text{B}}}_{{\text{4}}}}{\text{O}}_{7}^{{2 - }}$$–H2O at 273 K
| Autor: | Shi-Hua Sang, Jing-Shu Xu, Lan-Rong Zhao, Yun-Yun Gao, Chun-Xia He |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Materials Science (miscellaneous) chemistry.chemical_element Quinary 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences law.invention Inorganic Chemistry Carnallite Crystallography Projection (relational algebra) chemistry law Phase (matter) Saturation (graph theory) Lithium Physical and Theoretical Chemistry Crystallization Phase diagram |
| Zdroj: | Russian Journal of Inorganic Chemistry. 66:714-723 |
| ISSN: | 1531-8613 0036-0236 |
| DOI: | 10.1134/s0036023621050065 |
| Popis: | The isothermal equilibrium method was used to study the stable phase equilibria of the quinary system Li+, K+, Mg2+//Cl‒, $${{{\text{B}}}_{{\text{4}}}}{\text{O}}_{7}^{{2 - }}$$ –H2O at 273 K. The solubility data of each component in this system were measured through experiments, and the isothermal phase diagram of this system was also drawn. For the identification of the equilibrium solid phases of the invariant points, X-ray diffraction characterization was used. The projection surface of the stable phase diagram of the quinary system Li+, K+, Mg2+//Cl‒, $${{{\text{B}}}_{{\text{4}}}}{\text{O}}_{7}^{{2 - }}$$ ‒H2O at 273 K was drawn under the saturation condition of MgB4O7. The simplified dry-salt diagram has carnallite (KCl·MgCl2·6H2O) and lithium carnallite (LiCl·MgCl2·7H2O), and it contains eleven univariate solubility curves, five invariant points and seven crystallization regions corresponding to K2B4O7·4H2O, Li2B4O7·3H2O, KCl, MgCl2·6H2O, and LiCl·2H2O and double salts carnallite (KCl·MgCl2·6H2O) and lithium carnallite (LiCl·MgCl2·7H2O). In the quinary system, by comparing the area of each crystalline phase zone, lithium chloride is a highly soluble salt, therefore, in the solubility diagram, in comparison with magnesium tetraborate, it corresponds to the smallest crystallization area. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink