Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на этот ресурс: http://elar.urfu.ru/handle/10995/141634
Название: Synthesis of sulfide mineral crystals by incongruent methods using the example of Cu-Fe-S and Cu-Fe-Se systems
Авторы: Puzanova, I. G.
Pankrushina, E. A.
Pechurin, M. S.
Chareev, D. A.
Дата публикации: 2024
Издатель: AN Zavaritsky Institute of Geology and Geochemistry
Библиографическое описание: Пузанова, И. Г., Панкрушина, Е. А., Печурин, М. С., & Чареев, Д. А. (2024). СИНТЕЗ КРИСТАЛЛОВ СУЛЬФИДНЫХ МИНЕРАЛОВ ИНКОНГРУЭНТНЫМИ МЕТОДАМИ НА ПРИМЕРЕ СИСТЕМ CU-FE-S И CU-FE-SE. Литосфера, 24(2), 406-415. https://doi.org/10.24930/1681-9004-2024-24-2-406-415
Аннотация: Understanding the structure and thermodynamic properties of sulfide minerals is important for studying the paragenesis of sulfide formation on Earth and in space, as well as for analyzing technological issues in the processing of ores and polysulfide product concentrates. There is a lack of experimental and theoretical information on many representatives of the Cu-Fe-S and Cu-Fe-Se systems. Aim. To synthesize crystals in the Cu-Fe-S and Cu-Fe-Se systems at the lowest possible temperatures for the subsequent study of their physical properties, while solving the main problem of materials science related to interrelations between composition, structure, and properties. Materials and methods. Crystal synthesis was carried out by the solution-melt method in a stationary temperature gradient, in evacuated sealed quartz glass ampoules. Two types of ampoules were used in the experiment, standard and long. The ampoules were filled with a charge and a salt mixture of RbCl-LiCl of eutectic composition, evacuated and sealed, then placed in several quartz or ceramic glasses. The glasses were placed in tubular furnaces such that the ends of the ampoules with the charge were located closer to the center of the furnace, and the opposite ends were closer to the edge to create a temperature gradient. For standard ampoules, the hot end temperature was 520–469℃, and the cold end was 456–415℃. For long ones: 470℃ – hot end and 340℃ – cold. The synthesis duration ranged from three to four months. Results. Depending on the composition of the charge, crystals of chalcocine Cu2S, bornite Cu5FeS4, chalcopyrite CuFeS2, isocubanite CuFe2S3, and iron-containing dicopper sulfide with an iron content of up to 8 at % and various equilibrium associations with their participation and with the participation of pyrite FeS2 and pyrrhotites Fe1–xS were obtained. Copper dendrites were also found in some samples. In addition, crystals of a phase with the approximate composition of CuFeSe2 were obtained. It is shown that due to different combinations of oxidation states of all three elements dissolved in a salt electrolyte, it is possible to obtain phases with almost any stoichiometric ratio. Chalcopyrite and isocubanite are reliably detected using Raman spectroscopy. In this case, some samples are locally characterized by the “absence” of a spectrum, which probably indicates the metallic (semi-metallic) properties of the samples. Conclusion. Using the Cu-Fe-S and Cu-Fe-Se systems as an example, the possibility of obtaining sulfide crystals in a RbCl-LiCl salt melt up to a eutectic temperature of 313℃ is shown. Due to the low synthesis temperature, the synthesis should be carried out over several months, resulting in crystals a fraction of a millimeter in size. © 2024, AN Zavaritsky Institute of Geology and Geochemistry. All rights reserved.
Ключевые слова: COPPER
CRYSTAL GROWTH
IRON
MOLTEN SALTS
RAMAN SPECTROSCOPY
SULFIDES
URI: http://elar.urfu.ru/handle/10995/141634
Условия доступа: info:eu-repo/semantics/openAccess
cc-by
Идентификатор РИНЦ: 65679848
Идентификатор SCOPUS: 85193684958
Идентификатор PURE: 57319697
ISSN: 2500-302X
1681-9004
DOI: 10.24930/1681-9004-2024-24-2-406-415
Сведения о поддержке: Strategic Academic Leadership Programs of the Kazan; Council on grants of the President of the Russian Federation, (NSh-2394.2022.1.5); Council on grants of the President of the Russian Federation; Ural Federal University, UrFU, (PRIORITY-2030); Ural Federal University, UrFU; Ural Branch, Russian Academy of Sciences, UB RAS, (123011800012-9); Ural Branch, Russian Academy of Sciences, UB RAS
Funding text 1: The work was supported by the Grant of the President of the Russian Federation for state support of leading scientific schools of the Russian Federation No. NSh-2394.2022.1.5, with funds from the Strategic Academic Leadership Programs of the Kazan (Volga Region) Federal University and the Ural Federal University (PRIORITY-2030). Raman spectroscopy was carried out within the framework of the state assignment of the Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences No. 123011800012-9.; Funding text 2: The work was supported by the Grant of the President of the Russian Federation for state support of leading scientific schools of the Russian Federation No. NSh-2394.2022.1.5, with funds from the Strategic Academic Leadership Programs of the Kazan (Volga Region) Federal University and the Ural Federal University (PRIORITY-2030). Raman spectroscopy was carried out within the framework of the state assignment of the Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences No. 123011800012-9
Карточка проекта РНФ: Strategic Academic Leadership Programs of the Kazan; Council on grants of the President of the Russian Federation, (NSh-2394.2022.1.5); Council on grants of the President of the Russian Federation; Ural Federal University, UrFU, (PRIORITY-2030); Ural Federal University, UrFU; Ural Branch, Russian Academy of Sciences, UB RAS, (123011800012-9); Ural Branch, Russian Academy of Sciences, UB RAS
Funding text 1: The work was supported by the Grant of the President of the Russian Federation for state support of leading scientific schools of the Russian Federation No. NSh-2394.2022.1.5, with funds from the Strategic Academic Leadership Programs of the Kazan (Volga Region) Federal University and the Ural Federal University (PRIORITY-2030). Raman spectroscopy was carried out within the framework of the state assignment of the Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences No. 123011800012-9.; Funding text 2: The work was supported by the Grant of the President of the Russian Federation for state support of leading scientific schools of the Russian Federation No. NSh-2394.2022.1.5, with funds from the Strategic Academic Leadership Programs of the Kazan (Volga Region) Federal University and the Ural Federal University (PRIORITY-2030). Raman spectroscopy was carried out within the framework of the state assignment of the Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences No. 123011800012-9
Располагается в коллекциях:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

Файлы этого ресурса:
Файл Описание РазмерФормат 
2-s2.0-85193684958.pdf1,79 MBAdobe PDFПросмотреть/Открыть


Все ресурсы в архиве электронных ресурсов защищены авторским правом, все права сохранены.