Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media Full article
| Journal |
Materials Chemistry and Physics
ISSN: 0254-0584 , E-ISSN: 1879-3312 |
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| Output data | Year: 2018, Volume: 216, Pages: 37-41 Pages count : 5 DOI: 10.1016/j.matchemphys.2018.05.034 | ||||||
| Tags | Phase transformation; Spinel; Manganese oxide; Aluminum oxide; In situ XRD | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0002 |
Abstract:
The study revealed peculiarities in the formation of mixed oxides with the Mn3-xAlxO4 spinel structure that were obtained from initial simple oxides β-Mn3O4 and γ-Al2O3 by calcination in various media at 600–1200 °C. The phase composition of the samples treated in air, argon or hydrogen was investigated using ex situ and in situ X-ray diffraction. It was shown that the occurrence of phase transformations depends on the treatment conditions and is related to the charge state of manganese cations. A scheme of the structural transformations induced by temperature and medium was proposed. The formation temperature of spinel was found to decreases from 950 to 600 °C when the oxidizing medium is replaced by the reducing one. Mn3-xAlxO4 spinel (x ∼ 1.5) was produced in air at temperatures above 1050 °C or in an inert medium at 800–1200 °C.
Cite:
Bulavchenko O.A.
, Afonasenko T.N.
, Tsyrul'nikov P.G.
, Cherepanova S.V.
, Tsybulya S.V.
Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media
Materials Chemistry and Physics. 2018. V.216. P.37-41. DOI: 10.1016/j.matchemphys.2018.05.034 WOS Scopus РИНЦ ANCAN OpenAlex
Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media
Materials Chemistry and Physics. 2018. V.216. P.37-41. DOI: 10.1016/j.matchemphys.2018.05.034 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | May 14, 2018 |
| Published print: | Sep 1, 2018 |
Identifiers:
| Web of science: | WOS:000441492000006 |
| Scopus: | 2-s2.0-85049345977 |
| Elibrary: | 35762159 |
| Chemical Abstracts: | 2018:1071302 |
| Chemical Abstracts (print): | 169:319736 |
| OpenAlex: | W2804934015 |