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 Thermodynamic Treatment of Multicomponent Fused Salt Solutions: Common Anion Reactive Systems Approximation

1990 ◽  
Vol 1990-17 (1) ◽  
pp. 68-97
Author(s):  
S.N. Flengas
Keyword(s):  
Reactive Systems ◽  
Salt Solutions ◽  
Common Anion ◽  
Fused Salt

Calculation of phase diagrams and thermodynamic properties of 14 additive and reciprocal ternary systems containing Li2CO3, Na2CO3, K2CO3, Li2SO4, Na2SO4, K2SO4, LiOH, NaOH, and KOH

1984 ◽  
Vol 62 (3) ◽  
pp. 457-474 ◽  
Author(s):  
A. D. Pelton ◽  
C. W. Bale ◽  
P. L. Lin
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Properties ◽  
Molten Salt ◽  
Phase Diagrams ◽  
Binary Systems ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Ternary Systems ◽  
Maximum Error ◽  
Critical Assessment

Phase diagrams and thermodynamic properties of five additive molten salt ternary systems and nine reciprocal molten salt ternary systems containing the ions Li+, Na+, [Formula: see text], OH− are calculated from the thermodynamic properties of their binary subsystems which were obtained previously by a critical assessment of the thermodynamic data and the phase diagrams in these binary systems. Thermodynamic properties of ternary liquid phases are estimated from the binary properties by means of the Conformal Ionic Solution Theory. The ternary phase diagrams are then calculated from these thermodynamic properties by means of computer programs designed for the purpose. It is found that a ternary phase diagram can generally be calculated in this way with a maximum error about twice that of the maximum error in the binary phase diagrams upon which the calculations are based. If, in addition, some reliable ternary phase diagram measurements are available, these can be used to obtain small ternary correction terms. In this way, ternary phase diagram measurements can be smoothed and the isotherms drawn in a thermodynamically correct way. The thermodynamic approach permits experimental data to be critically assessed in the light of thermodynamic principles and accepted solution models. A critical assessment of error limits on all the calculated ternary diagrams is made, and suggestions as to which composition regions merit further experimental study are given.

scholarly journals PHASE EQUILIBRIA IN FUSED SALT SYSTEMS: BINARY SYSTEMS OF PLUTONIUM(III) CHLORIDE WITH THE CHLORIDES OF MAGNESIUM, CALCIUM, STRONTIUM AND BARIUM1

1961 ◽  
Vol 65 (12) ◽  
pp. 2226-2229 ◽  
Author(s):  
K. W. R. Johnson ◽  
Milton Kahn ◽  
J. A. Leary
Keyword(s):  
Phase Equilibria ◽  
Binary Systems ◽  
Salt Systems ◽  
Fused Salt

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

Molten salt mixtures. XI. Integral and partial molar volumes in the molten salt systems PbCl2 + NaCl, PbCl2 + RbCl, PbCl2 + CsCl, CdCl2 + RbCl, and CdCl2 + CsCl

1966 ◽  
Vol 19 (9) ◽  
pp. 1591 ◽  
Author(s):  
H Bloom ◽  
PWD Boyd ◽  
JL Laver ◽  
J Wong
Keyword(s):  
Molten Salt ◽  
Molar Volume ◽  
Partial Molar Volume ◽  
Binary Systems ◽  
Partial Molar Volumes ◽  
Complex Ions ◽  
Molar Volumes ◽  
Temperature Range ◽  
Salt Mixtures ◽  
Salt Systems

The densities of molten PbCl2, CsCl, and RbCl and of the molten salt systems PbCl2 + NaCl, PbCl2 + RbCl, PbCl2 + CsCl, CdCl2 + RbCl, and CdCl, + CsCl have been measured to an accuracy of �0.1% by an Archimedean method over a considerable temperature range. Integral and partial molar volume isotherms have been constructed for the above binary systems and are interpreted to show that complex ions are formed in all but the PbCl2+NaCl system.

Theory of Enthalpy of Mixing in Reactive Charge Asymmetrical Molten Salt Systems. Part II. Ternary Solutions

1972 ◽  
Vol 50 (9) ◽  
pp. 1345-1352
Author(s):  
S. N. Flengas ◽  
J. M. Skeaff
Keyword(s):  
Ternary System ◽  
Molten Salt ◽  
Binary Systems ◽  
Enthalpy Of Mixing ◽  
Complex Species ◽  
Enthalpies Of Mixing ◽  
Ternary Solutions ◽  
Products Of Reaction ◽  
Molten Salt System ◽  
Salt Systems

The enthalpies of mixing for a reacting charge asymmetrical ternary molten salt system have been calculated on the basis of an extension of a previously developed model for binary systems. The enthalpy of mixing is considered to consist of a reaction term and a mixing term; the former results from the formation of the tetrahedrally coordinated complex species [Formula: see text] and the latter from the mixing of the products of reaction according to quasichemical theory modified to account for charge asymmetry.The ternary model enables the prediction of the integral enthalpies from a knowledge of the interaction parameters determined for the two charge asymmetrical binary systems. The calculations are compared with experimentally measured integral enthalpies of mixing in the ternary system MnCl2–NaCl–CsCl, and shown to give accurate predictions of the behaviour of the system.

Electrochemical studies of molten salts. II. Diffusion potentials for the binary systems PbBr2 + CsBr, PbBr2 + RbBr, and PbBr2 + KBr

1966 ◽  
Vol 19 (10) ◽  
pp. 1779
Author(s):  
H Bloom ◽  
AJ Easteal
Keyword(s):  
Molten Salt ◽  
Molten Salts ◽  
Binary Systems ◽  
Electrochemical Studies ◽  
Lead Bromide ◽  
Diffusion Potentials ◽  
Salt Systems

Diffusion potentials have been determined, as a function of temperature and composition, for liquid junctions formed in the molten salt systems, PbBr2 + CsBr, PbBr2 + RbBr, and PbBr2 + KBr. The results are interpreted to indicate the existence of complex lead bromide species in these mixtures, particularly the ion PbBr-3.

PHASE EQUILIBRIUM DIAGRAMS FOR FUSED SALT SYSTEMS

1957 ◽  
Author(s):  
R. E. Thoma ◽  
W. R. Grimes
Keyword(s):  
Phase Equilibrium ◽  
Salt Systems ◽  
Fused Salt

Longitudinal collective models in metal-molten salt solutions

1986 ◽  
Vol 19 (23) ◽  
pp. 4443-4461 ◽  
Author(s):  
G Chabrier ◽  
J P Hansen ◽  
J F Joanny
Keyword(s):  
Molten Salt ◽  
Salt Solutions ◽  
Collective Models
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