Thermal Analysis of Processes at the Solid-Phase Synthesis of Lithium-Titanium Ferrite / E. V. Nikolaev, E. N. Lysenko, A. P. Surzhikov
Уровень набора: Russian Journal of Physical Chemistry AЯзык: английский.Страна: .Резюме или реферат: In this study, the reactivity of a Fe2O3–Li2CO3–TiO2 mixture with different initial densities was investigated by thermal and kinetic methods to analyze phase formation of lithium titanium ferrite. Test samples were powder with a density of 1 g/cm3 and a compact with a density of 2.6 g/cm3. High-density samples were formed by single-action cold compaction. It is shown that the reaction of solid-phase interaction of lithium-titanium ferrite strongly depends on the degree of compaction. The mass of the powder mixture sample decreases in the temperature range of 500–720°C. In compacts, the reaction of solid-phase interaction starts at lower temperature (~420°C). In addition, it is shown that in compacted samples, a lithium ferrite spinel phase is formed during heating. The kinetic analysis was used to determine the kinetic model of the synthesis reaction of lithium-titanium ferrite and to calculate the parameters of this process..Примечания о наличии в документе библиографии/указателя: [References: 27 tit.].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | lithium-titanium ferrite | solid-phase synthesis | thermal analysis | kinetic analysis | литий-титановые ферриты | твердофазный синтез | термический анализ | кинетический анализ Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: 27 tit.]
In this study, the reactivity of a Fe2O3–Li2CO3–TiO2 mixture with different initial densities was investigated by thermal and kinetic methods to analyze phase formation of lithium titanium ferrite. Test samples were powder with a density of 1 g/cm3 and a compact with a density of 2.6 g/cm3. High-density samples were formed by single-action cold compaction. It is shown that the reaction of solid-phase interaction of lithium-titanium ferrite strongly depends on the degree of compaction. The mass of the powder mixture sample decreases in the temperature range of 500–720°C. In compacts, the reaction of solid-phase interaction starts at lower temperature (~420°C). In addition, it is shown that in compacted samples, a lithium ferrite spinel phase is formed during heating. The kinetic analysis was used to determine the kinetic model of the synthesis reaction of lithium-titanium ferrite and to calculate the parameters of this process.
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