Synthesis of Highly Dispersed Aluminum Magnesium Oxides from the Product of Centrifugal Thermal Activation of Gibbsite Full article
| Journal |
Russian Journal of Applied Chemistry
ISSN: 1070-4272 , E-ISSN: 1608-3296 |
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| Output data | Year: 2021, Volume: 94, Number: 2, Pages: 152-161 Pages count : 10 DOI: 10.1134/S107042722102004X | ||
| Tags | product of centrifugal thermal activation of gibbsite, magnesium aluminate, synthesis | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
Abstract:
The possibility of preparing magnesium aluminate by the reaction of the product of centrifugal thermal activation of gibbsite with a saturated aqueous solution of magnesium nitrate at room temperature and 150°С was studied by X-ray diffraction, thermal, microscopic, adsorption, and chemical analysis methods. The reaction at 150°C between the components taken in the stoichiometric ratio with respect to the cations yields the phase of a layered double hydroxide [Mg0.33Al0.66(OH)2](NO3)0.6·0.013H2O. Its heat treatment at 550°C ensures the formation of stoichiometric spinel MgAl2O4 with the specific surface area of ~150 m2 g–1. Traditional impregnation of the product of centrifugal thermal activation of gibbsite with a concentrated magnesium nitrate solution, taken in an amount corresponding to the moisture capacity of the solid phase, at room temperature, followed by heat treatment at 550°С, yields a solid solution based on the low-temperature form γ-Al2O3 with the specific surface area of ~180 m2 g–1, containing ~4.55 wt % Mg. The samples obtained differ in the particle morphology and in the magnesium content on the surface. As compared to the traditional coprecipitation method, the suggested procedure allows considerable reduction of the reactant amounts and number of process steps and minimization or complete elimination of the wastewater formation.
Cite:
Zhuzhgov A.V.
, Kruglyakov V.Y.
, Suprun E.A.
, Protsenko R.S.
, Isupova L.A.
Synthesis of Highly Dispersed Aluminum Magnesium Oxides from the Product of Centrifugal Thermal Activation of Gibbsite
Russian Journal of Applied Chemistry. 2021. V.94. N2. P.152-161. DOI: 10.1134/S107042722102004X WOS Scopus РИНЦ AN OpenAlex
Synthesis of Highly Dispersed Aluminum Magnesium Oxides from the Product of Centrifugal Thermal Activation of Gibbsite
Russian Journal of Applied Chemistry. 2021. V.94. N2. P.152-161. DOI: 10.1134/S107042722102004X WOS Scopus РИНЦ AN OpenAlex
Original:
Жужгов А.В.
, Кругляков В.Ю.
, Супрун Е.А.
, Проценко Р.С.
, Исупова Л.А.
Синтез высокодисперсных алюмомагниевых оксидов на основе продукта центробежной термической активации гиббсита
Журнал прикладной химии. 2021. Т.94. №2. С.163-173. DOI: 10.31857/S0044461821020043 РИНЦ OpenAlex
Синтез высокодисперсных алюмомагниевых оксидов на основе продукта центробежной термической активации гиббсита
Журнал прикладной химии. 2021. Т.94. №2. С.163-173. DOI: 10.31857/S0044461821020043 РИНЦ OpenAlex
Dates:
| Submitted: | Aug 4, 2020 |
| Accepted: | Oct 28, 2020 |
| Published online: | Nov 6, 2020 |
| Published print: | Feb 1, 2021 |
Identifiers:
| Web of science: | WOS:000637503400004 |
| Scopus: | 2-s2.0-85104010197 |
| Elibrary: | 46774644 |
| Chemical Abstracts: | 2021:815935 |
| OpenAlex: | W3151734262 |