Abstract
The hydrothermal and decomposition reactions of differently ground gibbsite and its reaction products were studied. The samples were treated isothermally under hydrothermal conditions or in air, and the products were characterized by thermogravimetry and IR spectroscopy. It was found that the method and duration of grinding and the particle size of the starting gibbsite influenced the reactivity of the gibbsite itself and that of the primary reaction products. In a later step of the reaction sequence (hydrothermal rehydration ofγ-alumina), the effects of the differences in the properties of the starting gibbsites were insignificant.
Zusammenfassung
Es wurden die hydrothermischen und Zersetzungsreaktionen verschiedener Gibbsitproben und deren Reaktionsprodukten untersucht. Die Proben wurden unter hydrothermischen Bedingungen oder in Luft isothermisch behandelt, die Produkte mittels TG und IR beschrieben. Es wurde festgestellt, da\ Art und Weise der Zerkleinerung und Korngrö\e des Gibbsit-Ausgangsmateriales die ReaktivitÄt von Gibbsit selbst, aber auch die der primÄren Reaktionsprodukte beeinflu\t. In spÄteren Schritten des Reaktionsverlaufes (hydrothermische Rehydratation von-Aluminiumoxid) besitzen Unterschiede in den Eigenschaften des Gibbsit-Ausgangsmateriales keinen Einflu\.
Similar content being viewed by others
References
F. Paulik, J. Paulik, R. Naumann, K. Köhnke and D. Petzold, Thermochim. Acta, 64 (1983) 1.
B. C. Lippens and I. Steggerda, Physical and Chemical Aspects of Adsorbents and Catalysts, ed. B. G. Linsen, Academic Press, London-New York 1970 p. 171.
R. K. Buman, A. A. Mironovics and I. A. Zaporina, Izv. Akad. Nauk Latv. SSR Khim. Ser., 4 (1975) 428.
R. Tertian, D. Papée, J. Chim. Phys., 55 (1958) 341.
W. Lodding in R. F. Schwenker and P. D. Garn (Eds.) Thermal Analysis, Proc. 2nd Int Conf., Vol. 2. Academic Press, New York, London, 1969, p. 1239.
J. H. de Boer, J. M. H. Fortuin and J. J. Steggerda Proc. K. Ned. Akad. Wet Ser. B., 57 (1954) 170.
J. Rouquerol, F. Rouquerol and M. Ganteaume, J. Catal., 36 (1975) 99.
J. Rouquerol, F. Rouquerol and M. Ganteaume, J. Catal., 57 (1979) 222.
G. Pokol, G. Várhegyi and L. Váradi, Thermochim. Acta 76, (1984) 237.
R. C. Mackenzie and C. Berggeren, DTA I 1970, 279–286 AB Atomenergi Studsvik, Nyköping. Sweden.
V. M. Chertov and V. I. Zelentsov, Koll. Zh., 4 (1973) 805.
R. K. Buman, A. A. Mironovich, D. B. Vitola and M. A. Drille, Izv. A. N. Latv. SSR, Ser. Khim., 2 (1976) 138.
P. A. Skrabina, E. M. Moroz and E. A. Levickii, Kinetika i Kataliz, 22 (5) (1981) 1293.
Cs. Novák, G. Pokol, K. Tomor, J. Kö mives and S. Gál J. Thermal Anal., 33 (1988) 765.
J. Rouquerol, J. Fraissard, M. V. Mattieu, J. Elston and B. Imelik, Bull. Soc. Chim., (1970) 4233.
D. Vivien, M. C. Stegmann and C. Maziers, J. Chim. Phys., 70 (1973) 1502.
P. P. Mardikovich and A. I. Trohimec, Zh. Prikl. Spektr., 42 (1985) 959.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Novák, C., Pokol, G., Izvekov, V. et al. Studies on the reactions of aluminium oxides and hydroxides. Journal of Thermal Analysis 36, 1895–1909 (1990). https://doi.org/10.1007/BF01913436
Issue Date:
DOI: https://doi.org/10.1007/BF01913436