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A novel approach for synthesizing nitrides of lanthanides and actinides at low temperaturesтезисы доклада
- Авторы: Gerber E.A., Mikhaltsova I.A., Nevolin I.M., Kulyukhin S.A.
- Сборник: Book of abstracts. XXII Mendeleev Congress on General and Applied Chemistry, October 7-12, 2024. In 7 volumes
- Том: 5
- Тезисы
- Год издания: 2024
- Место издания: “Admiral Print” LLC Moscow
- Первая страница: 47
- Аннотация: Nitrides of f-elements are of great importance from the fundamental point of view, as well as in different applications.Nowadays, lanthanide nitrides are actively applied in the production of materials for permanent magnets, which is associated with high uniaxial anisotropy and high Curie temperatures. Actinide nitrides are used in the nuclear power applications. However, the common techniques to synthesize nitrides (such as carbothermic reduction or ammonolysis) require long-term heating up to 1400-1600 °C. However, novel synthetic strategies via solid-state reactions, applying solid nitrogen sources such as sodium amide1 or lithium nitride2 were demonstrated for synthesis of d-elements nitrides. The similar approach can be effectively implemented to obtain f-element nitrides. In this work, nitrides of f-elements, both lanthanides and actinides, have been synthesized by the low-temperature combustion reaction between corresponding metal anhydrous chlorides and sodium amide in the inert glovebox. The reaction products were analyzed by powder X-ray diffraction analysis (PXRD), the temperatures of the reaction were determined with differential scanning calorymetry (DSC). Samples for all analyses were placed in the special holders under inert conditions. These holders allow avoiding any contact with oxygen and/or water before and during the measurements. The impact of metal chloride/sodium amide ratio on phase composition have been investigated.
- Добавил в систему: Кулюхин Сергей Алексеевич