Abstract
Differences in the real structure of γ-Al2O3 samples obtained by the thermal decomposition of pseudoboehmite and boehmite prepared by the hydrothermal treatment of bayerite were found. The transformations of these structures during their conversion to δ-Al2O3 as the treatment temperature increased were studied. The rate of conversion of metastable alumina species into the stable α-Al2O3 phase significantly depends on the real structure of samples. The rate of this transformation is drastically retarded in the presence of extended defects in the oxides originated from boehmite, and the stability of metastable alumina species increased as the degree of surface dehydroxylation increased.
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Ivanova, A.S., Litvak, G.S., Kryukova, G.N. et al. Real structure of metastable forms of aluminum oxide. Kinet Catal 41, 122–126 (2000). https://doi.org/10.1007/BF02756150
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DOI: https://doi.org/10.1007/BF02756150