Phase Equilibria and Phase Diagrams for the Aqueous Ternary System Containing Sodium, Chloride, and Metaborate Ions at 288.15 and 308.15 K and 0.1 MPa
Joint Authors
Hou, Hongfang
Cui, Wanjing
Hu, Jiayin
Guo, Yafei
Deng, Tianlong
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-10
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Salt-water phase diagram of the ternary system (NaCl + NaBO2 + H2O) is significant in separate boron resources from brine.
Solubilities and physicochemical properties bifurcated to density and refractive index for the ternary system at 288.15 and 308.15 K and 0.1 MPa were investigated experimentally by means of isothermal dissolution.
According to the experimental data, the phase diagrams for this system at two temperatures were constructed and their physicochemical properties were drawn.
There both contain two invariant points, three univariant isotherm dissolution curves, and three crystallization regions corresponding to sodium metaborate tetrahydrate (NaBO2·4H2O, Smt), double salt teepleite (NaCl·NaBO2·2H2O, Te), and halite (NaCl, Ha) for (NaCl + NaBO2 + H2O).
At the invariant points of this ternary system, the coexisting solid phases are both for (Smt + Te) and (Te + Ha), respectively.
It was found that the double salt of teepleite was incongruent at 288.15 K and then transformed into congruent at 308.15 K.
Comparing the phase diagrams at 288.15 and 308.15 K, it reveals that the area of the crystallization region of NaBO2·4H2O decreased with the increase of temperature obviously, while the area of NaCl·NaBO2·2H2O increased sharply and that of NaCl increased lightly.
The refractive indices and densities of the system at two temperatures are similarly increased firstly and then decreased with the increase of NaCl concentration in the solution and attain extreme points at both invariant points.
Besides, the calculated values of densities and refractive indices utilizing the empirical equations are in accordance with the experimental data at 288.15 and 308.15 K.
American Psychological Association (APA)
Cui, Wanjing& Hou, Hongfang& Hu, Jiayin& Guo, Yafei& Deng, Tianlong. 2019. Phase Equilibria and Phase Diagrams for the Aqueous Ternary System Containing Sodium, Chloride, and Metaborate Ions at 288.15 and 308.15 K and 0.1 MPa. Journal of Chemistry،Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1170673
Modern Language Association (MLA)
Cui, Wanjing…[et al.]. Phase Equilibria and Phase Diagrams for the Aqueous Ternary System Containing Sodium, Chloride, and Metaborate Ions at 288.15 and 308.15 K and 0.1 MPa. Journal of Chemistry No. 2019 (2019), pp.1-6.
https://search.emarefa.net/detail/BIM-1170673
American Medical Association (AMA)
Cui, Wanjing& Hou, Hongfang& Hu, Jiayin& Guo, Yafei& Deng, Tianlong. Phase Equilibria and Phase Diagrams for the Aqueous Ternary System Containing Sodium, Chloride, and Metaborate Ions at 288.15 and 308.15 K and 0.1 MPa. Journal of Chemistry. 2019. Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1170673
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1170673