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- Title
Effect of Mechanical Activation on Reaction between Boehmite and Lithium Carbonate.
- Authors
Isupov, V. P.; Borodulina, I. A.; Gerasimov, K. B.; Bulina, N. V.
- Abstract
We have studied the effect of mechanical activation of a boehmite + lithium carbonate mixture in an AGO-2 planetary activator on phase transformations during heat treatment in air. The results demonstrate that heat treatment of the starting boehmite + lithium carbonate mixture leads to the formation of γ-Al2O3 as a reaction intermediate, which reacts with lithium carbonate to form α-LiAlO2. Heat treatment of the activated mixture leads to the formation of gamma-aluminum oxide and an unidentified intermediate phase, presumably, metastable lithium aluminate, which transforms into α-LiAlO2 at temperatures above 500°C. We have proposed a possible mechanism of the formation of this phase, which involves exchange of protons of boehmite with lithium cations, followed by the release of water and carbon dioxide.
- Subjects
LITHIUM carbonate; BOEHMITE; HEAT treatment; CARBON dioxide
- Publication
Inorganic Materials, 2020, Vol 56, Issue 1, p56
- ISSN
0020-1685
- Publication type
Article
- DOI
10.1134/S0020168520010045