Determination of activity coefficient of lanthanum chloride in molten LiCl-KCl eutectic salt as a function of cesium chloride and lanthanum chloride concentrations using electromotive force measurements

The thermodynamic behavior of lanthanides in molten salt systems is of significant scientific interest for the spent fuel reprocessing of Generation IV reactors. In this study, the apparent standard reduction potential (apparent potential) and activity coefficient of LaCl3 were determined in a molte...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nuclear materials 2016-12, Vol.482 (C), p.248-256
Main Authors: Bagri, Prashant, Simpson, Michael F.
Format: Article
Language:English
Subjects:
Activity coefficient
Activity coefficients
Apparent potentials
Cesium
Cesium chloride
Chemical reactors
Effects
Electrochemistry
Fuel reprocessing
High temperature
Lanthanides
Lanthanum
Lanthanum chloride
Lithium chloride
Molten salt electrochemistry
Molten salts
Nuclear fuel reprocessing
Nuclear fuels
Open circuit voltage
Potassium chloride
Salt
Salts
Spent nuclear fuels
Studies
Thermodynamic properties
Thermodynamics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermodynamic behavior of lanthanides in molten salt systems is of significant scientific interest for the spent fuel reprocessing of Generation IV reactors. In this study, the apparent standard reduction potential (apparent potential) and activity coefficient of LaCl3 were determined in a molten salt solution of eutectic LiCl-KCl as a function of concentration of LaCl3. The effect of adding up to 1.40 mol % CsCl was also investigated. These properties were determined by measuring the open circuit potential of the La—La(III) redox couple in a high temperature molten salt electrochemical cell. Both the apparent potential and activity coefficient exhibited a strong dependence on concentration. A low concentration (0.69 mol %) of CsCl had no significant effect on the measured properties, while a higher concentration (1.40 mol %) of CsCl caused an increase (become more positive) in the apparent potential and activity coefficient at the higher range of LaCl3 concentrations. [Display omitted]
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2016.10.006