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Title: Calculated thermodynamic properties of GdCl3 in LiCl-KCl eutectic molten salt

Journal Article · · Journal of Nuclear Materials
 [1];  [2];  [3]; ORCiD logo [4]
  1. Shanghai Jiao Tong University (China); The Ohio State University, Columbus, OH (United States); DOE/OSTI
  2. Virginia Polytechnic Institute and State University, Blacksburg, VA (United States)
  3. The Ohio State University, Columbus, OH (United States); Virginia Polytechnic Institute and State University, Blacksburg, VA (United States)
  4. The Ohio State University, Columbus, OH (United States)

The thermodynamic behaviors of lanthanides in molten salt are significant for the pyroprocessing of spent nuclear fuel. In this study, the ternary phase diagram of LiCl-KCl-GdCl3 system was assessed by the CALPHAD method using two-sublattice model. The liquidus surfaces were calculated and plotted from 720 K to 1000 K. The solubility of GdCl3 from 720 K to 850 K was determined from the phase diagram developed. The activity coefficient and apparent potential of GdCl3 with a concentration up to 3 mol% were also investigated. They both show a dependence on the concentration. In conclusion, From 0 to 3 mol%, the apparent potential increases by about 3% and the activity coefficient increases by about 50%.

Research Organization:
The Ohio State University, Columbus, OH (United States)
Sponsoring Organization:
USDOE; USDOE Office of Fossil Energy and Carbon Management (FECM); USDOE Office of Nuclear Energy (NE). Nuclear Energy University Program (NEUP)
Grant/Contract Number:
NE0008261
OSTI ID:
1538507
Journal Information:
Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Journal Issue: C Vol. 508; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Ternäre Chloride in den Systemen ACl/EuCl3(A = NaCs) journal August 1990
A two-sublattice model for molten solutions with different tendency for ionization journal January 1985
Zur existenz von KGd3Cl10 journal April 1970
Modification of the two-sublattice model for liquids journal April 1991
A general “geometric” thermodynamic model for multicomponent solutions journal June 2001
Thermo-Calc & DICTRA, computational tools for materials science journal June 2002
Phase diagram of the ternary system CeCl3–KCl–LiCl journal June 1998
Integrated model development for safeguarding pyroprocessing facility: Part II – Case studies and model integration journal February 2018
Concentration-dependent activity coefficients of lanthanides in liquid bismuth for the FHR primary coolant cleanup journal March 2018
Experimental investigations and thermodynamic modelling of KCl–LiCl–UCl3 system journal June 2014
Thermodynamic assessment of the LiCl–KCl–CeCl3 system journal June 2015
Electrochemical behaviour of LaCl3 at tungsten and aluminium cathodes in LiCl–KCl eutectic melt journal January 2012
Electrochemical behavior of LaCl3 and morphology of La deposit on molybdenum substrate in molten LiCl–KCl eutectic salt journal February 2014
Potentiometric Measurement of Activity of Rare Earth Chlorides (La, Gd, Ce, Nd) in LiCl-KCl Eutectic Salt journal January 2018
Electrochemical behavior of actinides and actinide nitrides in LiCl–KCl eutectic melts journal February 2006
Thermodynamic evaluation of LiCl-KCl-PuCl3 system journal February 2017
Thermochemical properties of lanthanides (Ln=La,Nd) and actinides (An=U,Np,Pu,Am) in the molten LiCl–KCl eutectic journal September 2005
Electrochemical behaviour of gadolinium ion in molten LiCl–KCl eutectic journal January 2007
Estimation of key physical properties for LaCl3 in molten eutectic LiCl–KCl by fitting cyclic voltammetry data to a BET-based electrode reaction kinetics model journal July 2016
Investigation of concentration-dependence of thermodynamic properties of lanthanum, yttrium, scandium and terbium in eutectic LiCl-KCl molten salt journal September 2016
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 journal December 2016
Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment journal November 2017
Kinetic model for electrorefining, part II: Model applications and case studies journal January 2014
Chemical diffusion coefficient calculation of U3+ in LiCl-KCl molten salt journal August 2016
Algebraic Representation of Thermodynamic Properties and the Classification of Solutions journal February 1948
Enthalpies de formation des alliages liquides bismuth-étain-gallium à 723 k. Choix d’une représentation analytique des grandeurs d’excès intégrales et partielles de mélange journal January 1975
The thermodynamic and transport properties of GdCl3 in molten eutectic LiCl-KCl derived from the analysis of cyclic voltammetry signals journal February 2017
An Experimental Study of Molten Salt Electrorefining of Uranium Using Solid Iron Cathode and Liquid Cadmium Cathode for Development of Pyrometallurgical Reprocessing journal April 1997
Investigations of the specific heat of solid bodies journal January 1865
Thermodynamic Properties for Rare Earths and Americium in Pyropartitioning Process Solvents journal January 1999
Electrochemical Studies of LaCl[sub 3] and GdCl[sub 3] Dissolved in Fused LiCl-KCl journal January 1999
Electrochemical Behavior and Some Thermodynamic Properties of UCl[sub 4] and UCl[sub 3] Dissolved in a LiCl-KCl Eutectic Melt journal January 2005
Electrochemistry of Uranium in Molten LiCl-KCl Eutectic journal January 2005
Electrochemistry and Electrocrystallization of Gadolinium on Mo Substrate in LiCl–KCl Eutectic Salts journal January 2014
Activity Measurements of Gadolinium(III) Chloride in Molten LiCl-KCl Eutectic Salt Using Saturated Gd/GdCl 3 Reference Electrode journal January 2017
Evaluation of the Electroextractions of Ce and Nd from LiCl-KCl Molten Salt Using Liquid Ga Electrode journal January 2017
Direct Calculation of Concentration-Dependent Activity Coefficient of UCl 3 in Molten LiCl-KCl journal January 2015
Pyroprocessing Flowsheets for Recycling used Nuclear fuel journal August 2011