NDLI: Solid-liquid phase equilibria in the ternary system (LiBO$_{2}$ + Li$_{2}$CO$_{3}$ + H$

Content Provider	Springer Nature Link
Author	Wang, Shi qiang Guo, Ya fei Yang, Jian sen Deng, Tian long
Copyright Year	2015
Abstract	Experimental studies on the solubilities and physicochemical properties including density, refractive index and pH value in the ternary systems (LiBO$_{2}$ + Li$_{2}$CO$_{3}$ + H$_{2}$O) at 288.15 and 298.15 K were determined with the method of isothermal dissolution equilibrium. Based on the experimental results, the phase diagrams and their corresponding physicochemical properties versus composition diagram in the system were plotted. In the phase diagrams of the ternary system at 288.15 and 298.15 K, there are one eutectic point and two crystallization regions corresponding to lithium metaborate octahydrate (LiBO$_{2}$ · 8H$_{2}$O) and lithium carbonate (Li$_{2}$CO$_{3}$), 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 diagrams for this ternary system at 288.15 and 298.15 K shows that the solid phase numbers and exist minerals are the same, and the area of crystallization region of Li$_{2}$CO$_{3}$ is increased obviously with the increasing temperature while that of LiBO$_{2}$ · 8H$_{2}$O is decreased. The physicochemical properties (density, pH value and refractive index) of the solutions of the ternary system at two temperatures changes regularly with the increasing lithium carbonate concentration. The calculated values of density and refractive index using empirical equations of the ternary system are in good agreement with the experimental values.
Starting Page	2190
Ending Page	2196
Page Count	7
File Format	PDF
ISSN	00360244
Journal	Russian Journal of Physical Chemistry
Volume Number	89
Issue Number	12
e-ISSN	1531863X
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-11-05
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	stable phase equilibrium phase diagram lithium metaborate lithium carbonate Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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