2013
DOI: 10.1021/je400649r
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Metastable Phase Equilibrium in the Quaternary System LiCl + KCl + RbCl + H2O at 348.15 K

Abstract: The metastable phase equilibrium of the quaternary system LiCl + KCl + RbCl + H2O at 348.15 K was done by using an isothermal evaporation method. The solubilities, densities, and refractive indices of the equilibrated solution were determined experimentally. On the basis of the measured data, the stereo phase diagram, the metastable phase diagram, the water content diagram, and the physicochemical properties versus composition diagrams were constructed. Results show that the quaternary system is of a complex t… Show more

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Cited by 26 publications
(14 citation statements)
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“…The empirical eqs and () were used to calculate the refractive index and density for the liquid phase in electrolyte solutions. The density and refractive index of the electrolyte solutions varied linearly with the composition of the solution.…”
Section: Resultsmentioning
confidence: 99%
“…The empirical eqs and () were used to calculate the refractive index and density for the liquid phase in electrolyte solutions. The density and refractive index of the electrolyte solutions varied linearly with the composition of the solution.…”
Section: Resultsmentioning
confidence: 99%
“…According to the following empirical equation about the density calculation of the mixed solution and the literature, we can find that the density has a positively correlated relationship with the composition [37,38]: (3). All of the calculated results have a maximum relative error < 0.017, which is a good support for the quality of the density data measured in this work.…”
Section: The Ternary System (K 2 So 4 + Kh 2 Po 4 + H 2 O)mentioning
confidence: 99%
“…Phase equilibrium studies provide the requisite theoretical and practical importance for the comprehensive utilization of salt lake brines . Plenty of studies about phase equilibrium data and phase diagrams have been performed to utilize salt lake brines or underground brines. , A series of ternary, quaternary, and quinary aqueous systems containing rubidium have been investigated in our previous work at (298–348) K. Results show that the double salt RbCl·MgCl 2 ·6H 2 O was formed in chloride systems containing rubidium and magnesium, and the continuous solid solution [(K, Rb)­Cl] was found in chloride systems containing potassium and rubidium. In the saturated solution of borate systems containing rubidium, the crystallographic form for rubidium borate is RbB 5 O 6 (OH) 4 ·2H 2 O. So far, previous phase equilibria studies of cesium containing systems mainly focused on the chloride type brine systems or the mixed electrolyte systems, , and rarely dealt with the sulfate system. To effectively utilize the brine resource, the phase diagram of sulfate systems containing rubidium or cesium should be investigated to obtain more information about the crystallographic forms and phase behavior.…”
Section: Introductionmentioning
confidence: 99%