Calculation of phase equilibria of ternary additive molten salt systems with a common anion

1983 ◽  
Vol 79 (9) ◽  
pp. 2171 ◽  
Author(s):  
Ivan J. Gal ◽  
István J. Zsigrai ◽  
Ivanka Paligorić ◽  
Katalin Szécsényi-Mészáros
Keyword(s):  
Phase Equilibria ◽  
Molten Salt ◽  
Salt Systems ◽  
Common Anion

Thermodynamic treatment of multicomponent fused salt solutions: common anion reactive systems approximation

1991 ◽  
Vol 69 (5) ◽  
pp. 870-883 ◽  
Author(s):  
S. N. Flengas
Keyword(s):  
Molten Salt ◽  
Binary Systems ◽  
Reactive Systems ◽  
Thermodynamic Cycle ◽  
Ternary Systems ◽  
Salt Solutions ◽  
Partial Molar Property ◽  
Salt Systems ◽  
Common Anion ◽  
Fused Salt

From a modified F.F.G. (1) thermodynamic cycle, equations have been developed from which the molar and partial molar excess thermodynamic properties of j-component molten salt solutions may be predicted from binary data.The theory is applicable to reactive molten salt systems and particularly to charge asymmetric fused salt solutions with common anions.It is shown that for a system having j + 1 components, such as [Formula: see text], any molar or partial molar property of mixing for MXq, may be calculated from available data on corresponding j-binary systems, such as MXq–AX, MXq–BX, and [Formula: see text].The equations are of the general form,[Formula: see text]The latter is applicable only when the multicomponent and the binary solutions have the same MXq content and same temperature.The theoretical expressions have been found to predict quite well available data on ternary and quarternary systems. New composition parameters for expressing the compositions in quarternary and quinary systems have been established. Key words: molten salt solutions, multicomponent systems, ternary systems, quarternary systems, quinary systems.

scholarly journals Developing Practical Models of Complex Salts for Molten Salt Reactors

Thermo ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 168-178
Author(s):  
Theodore M. Besmann ◽  
Juliano Schorne-Pinto
Keyword(s):  
Molten Salt ◽  
Nearest Neighbor ◽  
System Modeling ◽  
Model Parameters ◽  
Calphad Approach ◽  
Coordination Numbers ◽  
Regression Methods ◽  
Complex Salts ◽  
Salt Systems ◽  
Fitting Model

Molten salt reactors (MSRs) utilize salts as coolant or as the fuel and coolant together with fissile isotopes dissolved in the salt. It is necessary to therefore understand the behavior of the salts to effectively design, operate, and regulate such reactors, and thus there is a need for thermodynamic models for the salt systems. Molten salts, however, are difficult to represent as they exhibit short-range order that is dependent on both composition and temperature. A widely useful approach is the modified quasichemical model in the quadruplet approximation that provides for consideration of first- and second-nearest-neighbor coordination and interactions. Its use in the CALPHAD approach to system modeling requires fitting parameters using standard thermodynamic data such as phase equilibria, heat capacity, and others. A shortcoming of the model is its inability to directly vary coordination numbers with composition or temperature. Another issue is the difficulty in fitting model parameters using regression methods without already having very good initial values. The proposed paper will discuss these issues and note some practical methods for the effective generation of useful models.

Phase equilibria in water–salt systems from sodium, magnesium, and calcium nitrates and deicing properties of nitrate compositions

2017 ◽  
Vol 51 (4) ◽  
pp. 523-526 ◽  
Author(s):  
E. A. Frolova ◽  
D. F. Kondakov ◽  
L. I. Avdyushkina ◽  
A. V. Bykov ◽  
A. N. Shkarupin ◽  
...  
Keyword(s):  
Phase Equilibria ◽  
Sodium Magnesium ◽  
Water Salt ◽  
Salt Systems

Thermodynamic properties of the binary molten salt systems, PbBr2-KBr, PbBr2-RbBr and PbBr2-CsBr, by measurement of the electromotive forces of galvanic cells

1981 ◽  
Vol 34 (3) ◽  
pp. 479 ◽  
Author(s):  
H Bloom ◽  
MS White
Keyword(s):  
Thermodynamic Properties ◽  
Molten Salt ◽  
Activity Coefficients ◽  
Molten Salts ◽  
Free Energies ◽  
Complex Ions ◽  
Galvanic Cells ◽  
Salt Systems

The electromotive forces of galvanic cells for the formation of PbBr2 in the molten binary salt systems, PbBr2-KBr, PbBr2,-RbBr and PbBr2-CsBr, have been measured. Activities, activity coefficients and partial molar free energies have been calculated for each component of the three systems. Integral free energies of mixing have also been calculated. Various models of mixing of molten salts have been applied to the results. The systems contain complex ions, probably mixtures of PbBr42-, PbBr64- with some PbBr3-.

Accurate Procedure for Determining the Calibration Curve of High-Temperature Molten Salt Systems via Raman Spectroscopy

1993 ◽  
Vol 47 (8) ◽  
pp. 1286-1288 ◽  
Author(s):  
Sheng Dai ◽  
G. Mamantov ◽  
J. E. Coffield ◽  
G. M. Begun ◽  
J. P. Young
Keyword(s):  
Raman Spectroscopy ◽  
High Temperature ◽  
Molten Salt ◽  
Calibration Curve ◽  
Accurate Procedure ◽  
Salt Systems

Investigation of Phase Equilibria in Quinary Water–Salt Systems

2018 ◽  
Vol 63 (3) ◽  
pp. 598-612 ◽  
Author(s):  
Sherali Tursunbadalov ◽  
Lutfullo Soliev
Keyword(s):  
Phase Equilibria ◽  
Water Salt ◽  
Salt Systems
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