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A New Method for Synthesis of Fine Crystalline Magnesium Aluminate Spinel

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Abstract

A new method for synthesis of high-purity fine crystalline magnesium aluminate spinel (MgAl2O4) has been proposed by treating a mixture of finely divided MgO and aluminum hydroxide (Al(OH)3) or oxyhydroxide (AlOOH) with aqueous fluid under supercritical conditions (T = 380–400°С, Р\(_{{{{{\text{H}}}_{{\text{2}}}}{\text{O}}}}\) = 22.8–23.0 MPa). It has been demonstrated that the formation of the magnesium aluminate spinel structure occurs by a solid state mechanism. The new method of synthesis makes it possible to control the size (from 20 nm to 5 µm) and shape (spherical, lamellar, or bipyramidal) of the synthesized magnesium aluminate spinel (MgAl2O4) by varying the reaction conditions.

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Funding

The work was fulfilled in the framework of the State Assignment of the Institute of General and Inorganic Chemistry, RAS, in the area of basic research and in the framework of the State Assignment of Moscow State University no. AAAA-A16-116092810057-8.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    G. P. Panasyuk, I. V. Kozerozhets &  A. D. Izotov

  2. Moscow State University, 119992, Moscow, Russia

    M. N. Danchevskaya, Yu. D. Ivakin & G. P. Murav’eva

Authors
  1. G. P. Panasyuk
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  2. I. V. Kozerozhets
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  3. M. N. Danchevskaya
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  4. Yu. D. Ivakin
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  5. G. P. Murav’eva
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  6. A. D. Izotov
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Corresponding author

Correspondence to G. P. Panasyuk.

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Translated by G. Kirakosyan

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Panasyuk, G.P., Kozerozhets, I.V., Danchevskaya, M.N. et al. A New Method for Synthesis of Fine Crystalline Magnesium Aluminate Spinel. Dokl Chem 487, 218–220 (2019). https://doi.org/10.1134/S0012500819080019

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  • DOI: https://doi.org/10.1134/S0012500819080019

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