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Interaction between Gadolinium Oxide and FLiNaK Fluoride Melt According to Raman Spectroscopy
Abstract
An in situ Raman spectroscopy study has established a chemical mechanism for the interaction of gadolinium oxide with a molten fluoride mixture, FLiNaK, which holds promise for the use as a medium for the pyrochemical reprocessing of spent uranium-gadolinium oxide nuclear fuel. High-temperature spectral studies along with the use of Х-ray phase analysis have indicated an irreversible heterogeneous reaction Gd2O3s + 2LiFsol→2GdOFs + Li2Osol. The influence of temperature on the kinetics and completeness of the reaction has been established. When the temperature increases, the interaction process accelerates, the equilibrium content of Gd2O3 decreases, and one of GdOF increases. The reaction product (gadolinium oxyfluoride GdOF) has been shown to form rhombohedral (R3m) crystal modification. The difference in the reactivity of Gd2O3 and La2O3 in the fluoride melt FLiNaK was established.
About the Author
I. D. Zakiryanova
Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences
Russian Federation
Russian Federation
Ekaterinburg
References
1. Г. Л. Лунин, А. Н. Новиков, В. И. Павлов, А. М. Павловичев, Ю. М. Семченков. Атомная энергия, 102 (2007) 139—145
2. М. К. Кылышканов, Н. Н. Ярошенко, Г. В. Гусакова, А. А. Дорн. Изв. вузов. Сер. Физика, 64 (2021) 57—60, https://doi.org/10.17223/00213411/64/2-2/57
3. А. Е. Карпеева, В. Г. Колосовский, Д. С. Пахомов, А. Е. Скомороха, С. Тимошин. Изв. вузов. Сер. Ядерная энергетика, 3 (2021) 97—104, https://doi.org/10.26583/npe.2021.3.08
4. Е. О. Адамов, Ю. С. Мочалов, В. И. Рачков. Атомная энергия, 130 (2021) 28—34
5. Yu. P. Zaikov, A. P. Khramov, L. E. Ivanovskii. Russ. J. Electrochem., 33 (1997) 1306—1310
6. А. Ю. Шадрин, В. А. Кащеев, К. Н. Двоеглазов. Вопросы атомной науки и техники. Сер. Материаловедение и новые материалы, 87 (2016) 48—60
7. P. A. Kizub, A. I. Blokhin, P. A. Blokhin, E. F. Mitenkova, N. A. Mosunova, V. A. Kovrov, A. V. Shishkin, Yu. P. Zaikov, O. R. Rakhmanova. Nucl. Eng. Technol., 55 (2023) 1097—1104, https://doi.org/10.1016/j.net.2022.11.020
8. B. Laurenty. The LM-LS Experiment: Investigating Corrosion Control in Liquid Fluoride Salts, by Liquid Alkali Metal, Report UCBTH-06-002, University California Berkeley (2006)
9. J. Uhlíř. In: Molten Salt Reactors and Thorium Energy, Ed. T. Dolan, Woodhead Publishing, Cambridge, UK (2017) 209—230, https://doi.org/10.1016/b978-0-08-101126-3.00008-7
10. M. Ambrová, J. Jurišová, V. Danielik, J. Gabčova. J. Thermal Anal. Calorim., 91 (2008) 569—573, https://doi.org/10.1007/s10973-007-8533-6
11. Q. Yang, J. Ge, Y. Wang, J. Zhang. Nucl. Technol., 206 (2020) 1769—1777, https://doi.org/10.1080/00295450.2020.1757976
12. I. D. Zakiryanova, P. N. Mushnikov. J. Appl. Spectr., 92 (2025) 249—255, https://doi.org/10.1007/s10812-025-01904-2
13. I. Zakiryanova, D. Zakiryanov. Chem. Phys., 593 (2025) 112659, https://doi.org/10.1016/j.chem-phys.2025.112659
14. D. Zakiryanov. Comp. Theor. Chem., 1210 (2022) 113646, https://doi.org/10.1016/j.comptc.2022.113646
15. I. D. Zakiryanova, P. N. Mushnikov, E. V. Nikolaeva, Y. P. Zaikov. Processes, 11 (2023) 988, https://doi.org/10.3390/pr11040988
16. I. D. Zakiryanova. J. Appl. Spectr., 88 (2021) 755—760, https://doi.org/10.1007/s10812-021-01236-x
17. J.-M. Cheon, In-Ho Jung. J. Am. Ceram. Soc. (2025) e20364, https://doi.org/10.1111/jace.20364
18. A. Ubaldini, M. M. Carnasciali. J. Alloys Compd., 454 (2008) 374—378, https://doi.org/10.1016/j.jall-com.2006.12.067
19. Y. Repelin, C. Proust, E. Husson, J. Beny. J. Solid State Chem., 118 (1995) 163—169, https://doi.org/10.1006/jssc.1995.1326
20. J. Cui, G. A. Hope. J. Spectrosc., 2015 (2015) 940172, https://doi.org/10.1155/2015/940172
21. I. D. Zakiryanova, D. O. Zakiryanov. J. Mol. Liquids, 318 (2020) 114054, https://doi.org/10.1016/j.molliq.2020.114054
22. J. Yu, L. Cui, H. He, S. Yan, Y. Hu, H. Wu. J. Rare Earths, 32 (2014) 1—4, https://doi.org/10.1016/S1002-0721(14)60025-9
23. J. Derek, Y. Toshinobu, J. Janz. J. Chem. Eng. Data, 27 (1982) 366—367
24. L Fangfei, J. Zuyao, Z. Qingling, D. Hongli, Z. Ning, Y. Chunhua, G. Dongcai. Opt. Mater., 150 (2024) 115127, https://doi.org/10.1016/j.optmat.2024.115127
Review
For citations:
Zakiryanova I.D. Interaction between Gadolinium Oxide and FLiNaK Fluoride Melt According to Raman Spectroscopy. Zhurnal Prikladnoii Spektroskopii. 2026;93(2):278-285. (In Russ.)
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