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FEATURES OF OXIDATION OF ALUMINUM DISPERSED AT HIGH TEMPERATURES AND PRESSURES

Abstract

In recent times, researchers are interested in ultra and nanopowders of oxide ceramics and functional materials based on them. This article describes the results of obtaining an aluminum hydroxide powder – boehmite produced by the method of hydrothermal oxidation of aluminum. Boehmite obtained by this technology is characterized by high phase purity (according to the XRD-analysis there is well-crystallized boehmite). It is found that the hydrothermal synthesis, carried out by combustion in pre- and supercritical water, can be considered as an effective method of obtaining extra pure nanocrystalline hydroxides (boehmite) and oxides of aluminum (corrundum). In the case of realization of oxides and hydroxides of aluminum and also the technology of obtaining hydrogen and heat energy, this process can be considered to be highly profitable.

About the Authors

L. V. Sudnik
Research Institute of Pulsed Processes with Pilot Plant Minsk of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Engineering), Director


P. A. Vityaz
Presidium of the National Academy of Sciences of Belarus
Belarus
Academician, D. Sc. (Engineering), Proffesor, Presidium


Yu. A. Mazalov
Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM”
Belarus
D. Sc. (Engineering), Professor, Head of the Laboratory


D. Yu. Mazalov
Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM”
Belarus
Researcher


References

1. Zhuk A. Z., Kleimenov B. V., Shkol’nikov E. I., Bersh A. V. Aluminum hydrogen energy. Moscow, Joint Institute for High Temperatures of the Russian Academy of Sciences, 2007. 278 p. (in Russian).

2. Sudnik L. V., Vitiaz’ P. A., Il’iushchenko A. F., Mazalov Iu. A., Bersh A. V. Functional materials based on nano-structured aluminum hydroxide powders. Minsk, Belaruskaya Navuka Publ., 2010. 183 p. (in Russian).

3. Mazalov J. A., Vitjaz P. A., Iljuschenko A. Ph., Sudnik L. V. Production of hydroxide nanopowders by alumina-hydrogen technologies. Doklady Natsional’noi akademii nauk Belarusi [Doklady of the National Academy of Sciences of Belarus], 2008, vol. 52, no. 6, pp. 109–115 (in Russian).

4. Khaikin B. I. To the theory of combustion processes in heterogeneous condensed media. Merzhanov A. G. (ed.). Combustion processes in chemical technology and metallurgy. Chernogolovka, Joint Institute of Chemical Physics, 1975, pp. 227–244 (in Russian).

5. Griva V. A., Rozenblad V. I. Some methodological means to determine kinetics of low-temperature oxidation of metals by the nonisothermal thermographic methode. Problemy tekhnicheskogo goreniya T. 1 [Technical combustion problems. Vol. 1]. Chernogolovka, Institute of Chemical Physics, 1981, pp. 26–30 (in Russian).


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ISSN 1561-8323 (Print)
ISSN 2524-2431 (Online)