New method for synthesis of fine crystalline magnesium aluminate spinel | Zendy

G. P. Panasyuk | Zendy; И. В. Козерожец | Zendy; M. N. Danchevskaya | Zendy; Yu. D. Ivakin | Zendy; G. P. Muravieva | Zendy; А. Д. Изотов | Zendy

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New method for synthesis of fine crystalline magnesium aluminate spinel

Author(s) -

G. P. Panasyuk,

И. В. Козерожец,

M. N. Danchevskaya,

Yu. D. Ivakin,

G. P. Muravieva,

А. Д. Изотов

Publication year - 2019

Publication title -

доклады академии наук

Language(s) - English

Resource type - Journals

ISSN - 0869-5652

DOI - 10.31857/s0869-56524874387-390

Subject(s) - spinel , magnesium , lamellar structure , aluminium , materials science , chemical engineering , hydroxide , phase (matter) , aluminium hydroxide , inorganic chemistry , supercritical fluid , mineralogy , metallurgy , chemistry , organic chemistry , engineering

A new method for the synthesis of high-purity fine-crystalline aluminum-magnesium spinel MgAl2O4 was been proposed. The procedure includes treatment of mixture finely dispersed MgO and hydroxide Al(OH)3 or aluminum oxyhydroxide AlOOH by water fluid under supercritical conditions (T = 380-400 °С, PH2O = 22,8-23,0 MPa). It was been shown that the process of formation of the structure of aluminum-magnesium spinel proceeds through a solid-phase mechanism. By varying the conditions of synthesis, the new method of synthesis allows to adjust the size (from 20 nm to 5 µm) and shape (spherical, lamellar, bipyramidal) of particles of synthesized aluminum-magnesium spinel MgAl2O4.

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