Phase Diagrams of the Quaternary System NaCl–MgCl2–NH4Cl in Water at 0 and 25 °C and Their Application

2016 ◽  
Vol 61 (1) ◽  
pp. 450-457 ◽  
Author(s):  
Shuai-Yong Dou ◽  
Hong-Fei Guo ◽  
Bin Zhao ◽  
Chun-Yan Xue ◽  
Ji-Lin Cao
Keyword(s):  
Phase Diagrams ◽  
Quaternary System

Phase diagrams of the quaternary system K+, NH4+//Cl−, SO42−-H2O at 273.15 K and their application

2019 ◽  
Vol 134 ◽  
pp. 136-145 ◽  
Author(s):  
Cheng Li ◽  
Jing-Xue Wu ◽  
Hong-Fei Guo ◽  
Bin Zhao ◽  
Ji-Lin Cao
Keyword(s):  
Phase Diagrams ◽  
Quaternary System

Phase diagrams of the quaternary system NaCl-MgCl2-NH4Cl-H2O at 333.15 K and their application

2020 ◽  
Vol 140 ◽  
pp. 105872 ◽  
Author(s):  
Cheng Li ◽  
Dong-Yan Wang ◽  
Hong-Fei Guo ◽  
Bin Zhao ◽  
Xiu-Wu Liu ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Quaternary System

PHASE EQUILIBRIUM STUDIES FOR THE QUATERNARY SYSTEM URANYL NITRATE – ALUMINUM NITRATE – NITRIC ACID – WATER

1963 ◽  
Vol 41 (2) ◽  
pp. 531-536
Author(s):  
Robert D. Thibodeau ◽  
M. Adelman
Keyword(s):  
Phase Equilibrium ◽  
Phase Separation ◽  
Nitric Acid ◽  
Phase Diagrams ◽  
Uranyl Nitrate ◽  
Quaternary System ◽  
Aluminum Nitrate ◽  
Acid Water ◽  
Equilibrium Studies ◽  
Data Phase

The quaternary system UO2(NO3)2−Al(NO3)3−HNO3−H2O) was studied in the temperature range 0–20 °C, and the concentration range of 0–1.5 M Al(NO3)3 and 0–10 N HNO3. From the data, phase diagrams were prepared. No phase separation was evident at 30 °C and above, for the concentrations studied.

Liquid-solid equilibrium for the NaCl-NaHCO3-Na2CO3-H2O system at 45°C. Validation of mixed solvent electrolyte model

2013 ◽  
Vol 67 (9) ◽  
Author(s):  
Zdzisław Jaworski ◽  
Małgorzata Czernuszewicz
Keyword(s):  
Experimental Data ◽  
Phase Diagrams ◽  
Thermodynamic Model ◽  
Quaternary System ◽  
Mixed Solvent ◽  
Temperature Levels ◽  
Similar Phase ◽  
Good Agreement

AbstractThe main objective of this work was to verify the mixed solvent electrolyte (MSE) thermodynamic model for the prediction of the liquid-solid equilibrium in the soda system. The full quaternary system NaCl-NaHCO3-Na2CO3-H2O and its three subsystems were considered. Validation of the thermodynamic model was based on experimental data from literature. Phase diagrams for the soda system are plotted for isotherms of 45°C. Good agreement of the MSE results with those from experiments was found at 45°C. Similar phase diagrams for other temperature levels can be constructed based on the validated MSE model.

scholarly journals Topological Invariants of Vapor–Liquid, Vapor–Liquid–Liquid and Liquid–Liquid Phase Diagrams

Entropy ◽  
2021 ◽  
Vol 23 (12) ◽  
pp. 1666
Author(s):  
Anastasia V. Frolkova
Keyword(s):  
Liquid Phase ◽  
Phase Diagrams ◽  
Quaternary System ◽  
Qualitative Theory ◽  
Equivalence Classes ◽  
Miscibility Gap ◽  
Topological Invariants ◽  
Liquid Equilibrium ◽  
Liquid Vapor ◽  
Vapor Liquid

The study of topological invariants of phase diagrams allows for the development of a qualitative theory of the processes being researched. Studies of the properties of objects in the same equivalence class may be carried out with the aim of predicting the properties of unexplored objects from this class, or predicting the behavior of a whole system. This paper describes a number of topological invariants in vapor–liquid, vapor–liquid–liquid and liquid–liquid equilibrium diagrams. The properties of some invariants are studied and illustrated. It is shown that the invariant of a diagram with a miscibility gap can be used to distinguish equivalence classes of phase diagrams, and that the balance equation of the singular-point indices, based on the Euler characteristic, may be used to analyze the binodal-surface structure of a quaternary system.

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