Inorganic Materials

, Volume 55, Issue 9, pp 929–933 | Cite as

Mechanism of Phase Transformations of γ-Al2O3 and Al(OH)3 into Boehmite (AlOOH) during Hydrothermal Treatment

  • G. P. PanasyukEmail author
  • I. V. Kozerozhets
  • E. A. Semenov
  • M. N. Danchevskaya
  • L. A. Azarova
  • V. N. Belan


We propose a mechanism capable of describing phase transformations during the hydrothermal treatment of micron- and nanometer-sized γ-Al2O3 and Al(OH)3 powders, identify the steps of the process, and demonstrate the role of water with a small heat of vaporization in the hydrothermal treatment process.


mechanism water with a small heat of vaporization phase transformations γ-Al2O3 aluminum hydroxide boehmite 



This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, basic research).


  1. 1.
    Krivoruchko, O.P., Zhuzhgov, A.V., Bolotov, V.A., Tanashev, Yu.Yu., Molina, I.Yu., and Parmon, V.N., New approach to the novel synthesis of boehmite (γ‑AlOOH) by microwave irradiation of gibbsite: kinetics of solid-phase reactions and dielectric properties of the reactants, Catal. Ind., 2014, vol. 6, no. 2, pp. 79–87.CrossRefGoogle Scholar
  2. 2.
    Svarovskaya, N.V., Bakina, O.V., Glazkova, E.A., Fomenko, A.N., and Lerner, M.I., Glass and cellulose acetate fibers-supported boehmite nanosheets for bacteria adsorption, Prog. Nat. Sci.-Mater. Int., 2017, vol. 27, no. 2, pp. 268–274.Google Scholar
  3. 3.
    Panasyuk, G.P., Belan, V.N., Voroshilov, I.L., and Kozerozhets, I.V., Hydrargillite → boehmite transformation, Inorg. Mater., 2010, vol. 46, no. 7, pp. 747–753.CrossRefGoogle Scholar
  4. 4.
    Alinejad, B., Mahmoodi, K., and Ahmadi, K., A new route to mass production of metal hydroxide/oxide hydroxide nanoparticles, Mater. Chem. Phys., 2009, vol. 118, nos. 2–3, pp. 473–476.CrossRefGoogle Scholar
  5. 5.
    Danilenko, N.B., Savel’ev, G.G., Yavorovskii, N.A., Yurmazova, T.A., Galanov, A.I., and Balukhtin, P.V., Composition and formation kinetics of erosion products of the metallic charge in an electric-discharge reactor, Russ. J. Appl. Chem., 2005, vol. 75, no. 9, pp. 1438–1443.CrossRefGoogle Scholar
  6. 6.
    Glazkova, E.A., Bakina, O.V., Domashenko, V.V., Lozhkomoev, A.S., Svarovskaya, N.B., and Lerner, M.I., Hydrolysis of aluminum nitride composite nanopowders, Nanotekhnika, 2010, vol. 8, no. 4, pp. 51–55.Google Scholar
  7. 7.
    Panasyuk, G.P., Semenov, E.A., Kozerozhets, I.V., Azarova, L.A., Voroshilov, I.L., Belan, V.N., and Pershikov, S.A., RF Patent 2 625 388, Byull. Izobret., 2016, no. 20.Google Scholar
  8. 8.
    Tsuchida, T., Hydrothermal synthesis of submicrometer crystals of boehmite, J. Eur. Ceram. Soc., 2000, vol. 20, no. 11, pp. 1759–1764.CrossRefGoogle Scholar
  9. 9.
    Panasyuk, G.P., Kozerozhets, I.V., Semenov, E.A., Azarova, L.A., Belan, V.N., and Danchevskaya, M.N., A new method for producing a nanosized γ-Al2O3 powder, J. Inorg. Chem., 2018, vol. 63, no. 10, pp. 1303–1308. CrossRefGoogle Scholar
  10. 10.
    Panasyuk, G.P., Kozerozhet, I.V., Voroshilov, I.L., Belan, V.N., Semenov, E.A., and Luchkov, I.V., The thermodynamic properties and role of water contained in dispersed oxides in precursor-boehmite conversion, based on the example of aluminum hydroxide and oxide under hydrothermal conditions in different environments, J. Phys. Chem. A, 2015, vol. 89, no. 4, pp. 592–597.Google Scholar
  11. 11.
    Panasyuk, G.P., Voroshilov, I.L., Belan, V.N., and Kozerozhets, I.V., Preparation of alpha-alumina nanopowder, Khim. Tekhnol., 2011, no. 4, pp. 227–231.Google Scholar
  12. 12.
    Panasyuk, G.P., Azarova, L.A., Belan, V.N., Semenov, E.A., Danchevskaya, M.N., Voroshilov, I.L., Kozerozhets, I.V., Pershikov, S.A., and Kharatyan, S.Yu., Methods for the preparation of high-purity aluminum oxide for sapphire crystal growth (a review), Khim. Tekhnol., 2017, no. 9, pp. 393–400.Google Scholar
  13. 13.
    Panasyuk, G.P., Belan, V.N., Voroshilov, I.L., Kozerozhets, I.V., Luchkov, I.V., Kondakov, D.F., and Demina, L.I., Conversion of hydrargillite and γ-aluminum oxide into boehmite in various hydrothermal media, Khim. Tekhnol., 2012, no. 6, pp. 321–328.Google Scholar
  14. 14.
    Panasyuk, G.P., Luchkov, I.V., Kozerozhets, I.V., Shabalin, D.G., and Belan, V.N., Effect of pre-heat treatment and cobalt doping of hydrargillite on the kinetics of the hydrargillite–corundum transformation in supercritical water fluid, Inorg. Mater., 2013, vol. 49, no. 9, pp. 899–903.CrossRefGoogle Scholar
  15. 15.
    Kozerozhets, I.V., Development of a method for the preparation and characterization of submicron- and nanometer-sized high-purity aluminum oxide particles, Cand. Sci. (Chem.) Dissertation, Moscow, 2011.Google Scholar
  16. 16.
    Stromberg, A.G., Fizicheskaya khimiya (Physical Chemistry), Moscow: Vysshaya Shkola, 2001.Google Scholar
  17. 17.
    Sukhodub, L.F., Telezhenko, Yu.V., Shelkovskii, V.S., and Lisnyak, Yu.V., Ental’piya malykh klasterov vody (Enthalpy of Small Water Clusters), Kharkov: Fiz.-Tekh. Inst. Nizkikh Temperatur Akad. Nauk Ukr. SSR, 1984.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • G. P. Panasyuk
    • 1
    Email author
  • I. V. Kozerozhets
    • 1
  • E. A. Semenov
    • 1
  • M. N. Danchevskaya
    • 2
  • L. A. Azarova
    • 1
  • V. N. Belan
    • 1
  1. 1.Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesMoscowRussia
  2. 2.Moscow State UniversityMoscowRussia

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