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- Title
Effect of the Reaction Medium on the Mechanochemical Synthesis of LiAlO<sub>2</sub>.
- Authors
Isupov, V. P.; Bulina, N. V.; Borodulina, I. A.
- Abstract
An unactivated mixture of aluminum hydroxide (gibbsite) and lithium carbonate and a mixture mechanically activated in an AGO-2 planetary mill were heat-treated in air and under vacuum (0.05 Pa) at temperatures of up to 800-850°C, and the phase composition of the heat treatment products was determined by in situ X-ray diffraction. The results demonstrate that, in the case of the unactivated mixture or after mechanical activation for 1 min, heat treatments in air and under vacuum lead to the formation of α-LiAlO2 and γ-LiAlO2, respectively. After mechanical activation for 5 or 10 min, heat treatment both in air and under vacuum leads to γ-LiAlO2 formation. A possible mechanism behind the effect of the reaction medium on the phase composition of LiAlO2 is analyzed.
- Subjects
CHEMICAL synthesis; ALUMINUM hydroxide; LITHIUM carbonate; TEMPERATURE effect; X-ray diffraction
- Publication
Inorganic Materials, 2018, Vol 54, Issue 2, p147
- ISSN
0020-1685
- Publication type
Article
- DOI
10.1134/S0020168518020073