Equilibrium Phase Diagram of Li&lt;sup&gt;＋&lt;/sup&gt;,Na&lt;sup&gt;＋&lt;/sup&gt;∥,CO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;2－&lt;/sup&gt;,B4O&lt;sub&gt;7&lt;/sub&gt;&lt;sup&gt;2－&lt;/sup&gt;-H&lt;sub&gt;2&lt;/sub&gt;O Quaternary System at 288 K

Shihua, Sang; 四川大学化工学院, 成都; Ming-Lin, Tang; Zhang, Yunxiang

doi:10.3866/pku.whxb20020914

Acta Physico-Chimica Sinica

2002

DOI: 10.3866/pku.whxb20020914

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Equilibrium Phase Diagram of Li＋,Na＋∥,CO32－,B4O72－-H2O Quaternary System at 288 K

Sang Shihua¹,

成都四川大学化工学院²,

Tang Ming-Lin³

et al.

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Investigation of Phase Equilibria in Quinary Water–Salt Systems

Tursunbadalov

Солиев

2018

J. Chem. Eng. Data

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Isothermal methods of investigation of quinary systems and advantages of use of the translation method for investigation of quinary water−salt systems were discussed. Two quinary systemsLi, Na, K//CO 3 , B 4 O 7 −H 2 O and Na, K//Br, SO 4 , B 4 O 7 −H 2 Owere investigated by means of the translation method at 15 and 25 °C, respectively. The comparison showed a good agreement between our results and the available literature data. There are 4 points, 13 curves, and 15 fields saturated with 4, 3, and 2 different equilibrium solid phases, respectively, in Li, Na, K//CO 3 , B 4 O 7 −H 2 O systems at 15 °C. The quinary Na, K//Br, SO 4 , B 4 O 7 −H 2 O system at 25 °C involves 5 invariant points, 16 monovariant curves, and 18 divariant fields saturated with 4, 3, and 2 different equilibrium solid phases, respectively. The total phase equilibria diagrams of both of the quinary systems were constructed on the basis of obtained data. The obtained diagrams were fragmented into divariant cocrystallization fields saturated with two different equilibrium solid phases. The trivariant crystallization volumes, which reflect the structures of Janecke dry-salt phase diagrams of the systems saturated with the relevant phases, were also extracted.

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Investigation of Phase Equilibria in Quinary Water–Salt Systems

Tursunbadalov

Солиев

2018

J. Chem. Eng. Data

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(Liquid + Solid) Phase Equilibria in the Quinary System Li⁺ + Na⁺ + K⁺ + CO₃^2- + B₄O₇^2- + H₂O at 288 K

2005

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An experimental study on phase equilibria at 288 K in the quinary system Li + + Na + + K + + CO 3 2-+ B 4 O 7 2-+ H 2 O was done by the isothermal solution saturation method. Equilibrium solubilities and properties such as the density, electrical conductivity, and pH of the equilibrium solution were determined experimentally. According to the experimental data, the equilibrium phase diagram saturated with Li 2 CO 3 was constructed. The phase diagram of the quinary system has four invariant points, nine univariant curves, and six crystallization fields (K

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Solubility of the Aqueous Reciprocal Quaternary System Li⁺, Na⁺//CO₃^2–, SO₄^2––H₂O at 273.15 K

Zeng²,

et al. 2013

J. Chem. Eng. Data

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An isothermal evaporation method was employed to study the solubilities of the aqueous quaternary system Li + , Na + //CO 3 2− , SO 4 2− −H 2 O at 273.15 K, and the corresponding densities of the equilibrated solution were determined by the specific gravity bottle method. According to the experimental data, the metastable phase diagram, the water content diagram, and the density versus composition diagram were constructed. Results indicate that the quaternary system is of a complex type due to the two double salts Na 3 Li(SO 4 ) 2 •6H 2 O and 2Na 2 SO 4 •Na 2 CO 3 formed. There are four invariant points, six crystallization fields corresponding to four single salts (Li 2 CO 3 , Li 2 SO 4 •H 2 O, Na 2 SO 4 •10H 2 O, and Na 2 CO 3 •10H 2 O) and two double salts (Na 3 Li(SO 4 ) 2 •6H 2 O and 2Na 2 SO 4 •Na 2 CO 3 ) in this metastable phase diagram. The comparison was made between the metastable phase diagrams at 273.15 K and at 288.15 K and also between the metastable phase diagram at 273.15 K and stable phase diagrams at (298.15, 323.15, and 373.15) K. Results show that double salt 2Na 2 SO 4 •Na 2 CO 3 is formed at T = (273.15, 323.15, and 373.15) K, while it is not formed at T = (288.15 and 298.15) K.

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Equilibrium Phase Diagram of Li<sup>＋</sup>,Na<sup>＋</sup>∥,CO<sub>3</sub><sup>2－</sup>,B4O<sub>7</sub><sup>2－</sup>-H<sub>2</sub>O Quaternary System at 288 K

Cited by 5 publications

References 0 publications

Investigation of Phase Equilibria in Quinary Water–Salt Systems

Investigation of Phase Equilibria in Quinary Water–Salt Systems

(Liquid + Solid) Phase Equilibria in the Quinary System Li⁺ + Na⁺ + K⁺ + CO₃^2- + B₄O₇^2- + H₂O at 288 K

Solubility of the Aqueous Reciprocal Quaternary System Li⁺, Na⁺//CO₃^2–, SO₄^2––H₂O at 273.15 K

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Equilibrium Phase Diagram of Li<sup>＋</sup>,Na<sup>＋</sup>∥,CO<sub>3</sub><sup>2－</sup>,B4O<sub>7</sub><sup>2－</sup>-H<sub>2</sub>O Quaternary System at 288 K

Cited by 5 publications

References 0 publications

Investigation of Phase Equilibria in Quinary Water–Salt Systems

Investigation of Phase Equilibria in Quinary Water–Salt Systems

(Liquid + Solid) Phase Equilibria in the Quinary System Li+ + Na+ + K+ + CO32- + B4O72- + H2O at 288 K

Solubility of the Aqueous Reciprocal Quaternary System Li+, Na+//CO32–, SO42––H2O at 273.15 K

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(Liquid + Solid) Phase Equilibria in the Quinary System Li⁺ + Na⁺ + K⁺ + CO₃^2- + B₄O₇^2- + H₂O at 288 K

Solubility of the Aqueous Reciprocal Quaternary System Li⁺, Na⁺//CO₃^2–, SO₄^2––H₂O at 273.15 K