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

Abstract

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%.

Authors:
 [1];  [2];  [3]; ORCiD logo [4]
  1. Shanghai Jiao Tong University (China); The Ohio State University, Columbus, OH (United States)
  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)
Publication Date:
Research Org.:
The Ohio State University, Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy and Carbon Management (FECM); USDOE Office of Nuclear Energy (NE). Nuclear Energy University Program (NEUP)
OSTI Identifier:
1538507
Alternate Identifier(s):
OSTI ID: 1495277
Grant/Contract Number:  
NE0008261
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 508; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Materials Science; Nuclear Science & Technology; LiCl-KCl-GdCl3; phase diagram; solubility; apparent potential; activity coefficient

Citation Formats

Zhou, Wentao, Wang, Yafei, Zhang, Jinsuo, and Khafizov, Marat. Calculated thermodynamic properties of GdCl3 in LiCl-KCl eutectic molten salt. United States: N. p., 2018. Web. doi:10.1016/j.jnucmat.2018.05.030.
Zhou, Wentao, Wang, Yafei, Zhang, Jinsuo, & Khafizov, Marat. Calculated thermodynamic properties of GdCl3 in LiCl-KCl eutectic molten salt. United States. https://doi.org/10.1016/j.jnucmat.2018.05.030
Zhou, Wentao, Wang, Yafei, Zhang, Jinsuo, and Khafizov, Marat. Fri . "Calculated thermodynamic properties of GdCl3 in LiCl-KCl eutectic molten salt". United States. https://doi.org/10.1016/j.jnucmat.2018.05.030. https://www.osti.gov/servlets/purl/1538507.
@article{osti_1538507,
title = {Calculated thermodynamic properties of GdCl3 in LiCl-KCl eutectic molten salt},
author = {Zhou, Wentao and Wang, Yafei and Zhang, Jinsuo and Khafizov, Marat},
abstractNote = {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%.},
doi = {10.1016/j.jnucmat.2018.05.030},
journal = {Journal of Nuclear Materials},
number = C,
volume = 508,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:

Citation Metrics:
Cited by: 8 works
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Figures / Tables:

Table 1 Table 1: Optimized parameters for the LiCl-KCl-GdCl3 system

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