Abstract
SEVERAL polymorphic forms of anhydrous alumina derived from the calcination of hydrated aluminas have been described by various authors1–3. The interpretations made of the relationships which exist between the hydrated and anhydrous forms pre-suppose that the dehydration of gibbsite and bayerite occur through böhmite, and that the dehydration of the böhmite derived from gibbsite can unaccountably yield one of two series of transformations before α-alumina is finally produced.
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Weiser, H. B., and Milligan, W. O., J. Phys. Chem., 36, 3010 (1932); 38, 1175 (1934). Jellinek, M. H., and Fankuchen, I., Indust. and Eng. Chem., Indust. Edit., 37, 158 (1945).
Rooksby, H. P., “X-Ray Identifications and Crystal Structures of Clay Minerals”, 244 (Mineralogical Society, 1951).
Stumpf, H. C., Russell, A. S., et al., Indust. and Eng. Chem., 42, 7, 1398 (1950).
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DAY, M., HILL, V. Thermal Transformations of the Aluminas and their Hydrates. Nature 170, 539 (1952). https://doi.org/10.1038/170539a0
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DOI: https://doi.org/10.1038/170539a0
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