Thermodynamic Evaluation of NaF-MFn(M=Be, U, Th) Systems for Molten Salt Reactor

doi:10.1007/s40242-018-7398-5

高等学校化学研究 ›› 2018, Vol. 34 ›› Issue (3): 457-463.doi: 10.1007/s40242-018-7398-5

Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor

WU Shuang^1,2, LI Xiang^1,2, ZHANG Peng¹, AN Xuehui¹, XIE Leidong¹

1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China;
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China

收稿日期:2017-12-08 修回日期:2018-03-08 出版日期:2018-06-01 发布日期:2018-03-26
通讯作者: AN Xuehui, XIE Leidong E-mail:xieleidong@sinap.ac.cn;anxuehui@sinap.ac.cn
基金资助:
Supported by the National Natural Science Foundation of China(No.21406256) and the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XD02002400).

Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor

WU Shuang^1,2, LI Xiang^1,2, ZHANG Peng¹, AN Xuehui¹, XIE Leidong¹

1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China;
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received:2017-12-08 Revised:2018-03-08 Online:2018-06-01 Published:2018-03-26
Contact: AN Xuehui, XIE Leidong E-mail:xieleidong@sinap.ac.cn;anxuehui@sinap.ac.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21406256) and the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XD02002400).

摘要/Abstract

摘要： The phase diagrams of NaF-BeF₂, NaF-ThF₄and NaF-UF₄systems were assessed based on thermodynamic principles, and diverse thermodynamic models were adapted to different systems. Associate solution model (ASM) was used to describe the Gibbs energies of liquid phase of the NaF-BeF₂system, whereas other systems(NaF-ThF₄and NaF-UF₄) were treated with the substitutional solution model(SSM) and intermediate compounds were described as stoichiometric compounds according to the Neumann-Kopp rule. All the thermodynamic model parameters were optimized by the least squares procedure until good coincidence was achieved between the calculated results and the experimental data. The derived thermodynamic parameters will be merged into the NaF-BeF₂-ThF₄-UF₄ database to develop the thorium molten salt reactor(TMSR) project.<

关键词: Molten salt, Thermodynamic modeling, Phase diagram

Abstract: The phase diagrams of NaF-BeF₂, NaF-ThF₄and NaF-UF₄systems were assessed based on thermodynamic principles, and diverse thermodynamic models were adapted to different systems. Associate solution model (ASM) was used to describe the Gibbs energies of liquid phase of the NaF-BeF₂system, whereas other systems(NaF-ThF₄and NaF-UF₄) were treated with the substitutional solution model(SSM) and intermediate compounds were described as stoichiometric compounds according to the Neumann-Kopp rule. All the thermodynamic model parameters were optimized by the least squares procedure until good coincidence was achieved between the calculated results and the experimental data. The derived thermodynamic parameters will be merged into the NaF-BeF₂-ThF₄-UF₄ database to develop the thorium molten salt reactor(TMSR) project.<

Key words: Molten salt, Thermodynamic modeling, Phase diagram

WU Shuang, LI Xiang, ZHANG Peng, AN Xuehui, XIE Leidong. Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor[J]. 高等学校化学研究, 2018, 34(3): 457-463.

WU Shuang, LI Xiang, ZHANG Peng, AN Xuehui, XIE Leidong. Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor[J]. Chemical Research in Chinese Universities, 2018, 34(3): 457-463.

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Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor

Thermodynamic Evaluation of NaF-MF_n(M=Be, U, Th) Systems for Molten Salt Reactor

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