Phase Transformations in the Mn–Ga–O System Depending on the Preparation Conditions Full article
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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| Output data | Year: 2018, Volume: 59, Number: 7, Pages: 1631-1638 Pages count : 8 DOI: 10.1134/s0022476618070156 | ||||||
| Tags | phase transformations, manganese-containing double oxides, manganese-gallium spinel, powder X-ray diffraction | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0002 |
Abstract:
Manganese-gallium samples with cation ratios Mn:Ga = 1:2, 1.5:1.5, and 2:1 are synthesized by coprecipitation with subsequent annealing in air in a temperature range 600–1200 °C. Powder XRD, TEM, and BET methods are used to study the physicochemical characteristics of the samples. It is found that in the air at the annealing temperature of 600 °C finely dispersed low-temperature Mn3–xGaxO4 spinels primarily form in all series, but in the whole temperature range (600–1200 °C) the system is multiphase. Annealing at 800–1200 °C leads to an increase in the concentration of simple oxides (β-Mn3O4 and β-Ga2O3). Only simple α-Mn2O3 and β-Ga2O3 oxides exist in a Mn:Ga = 2:1 series at 800 °C. In the sample with a cation ratio Mn:Ga = 1.5:1.5 annealed in air at 1000 °C, the formation of a superstructure based on the spinel structure is found.
Cite:
Venediktova O.S.
, Bulavchenko O.A.
, Afonasenko T.N.
, Tsysul’nikov P.G.
, Gerasimov E.Y.
, Tsybulya S.V.
Phase Transformations in the Mn–Ga–O System Depending on the Preparation Conditions
Journal of Structural Chemistry. 2018. V.59. N7. P.1631-1638. DOI: 10.1134/s0022476618070156 WOS Scopus РИНЦ AN OpenAlex
Phase Transformations in the Mn–Ga–O System Depending on the Preparation Conditions
Journal of Structural Chemistry. 2018. V.59. N7. P.1631-1638. DOI: 10.1134/s0022476618070156 WOS Scopus РИНЦ AN OpenAlex
Original:
Венедиктова О.С.
, Булавченко О.А.
, Афонасенко Т.Н.
, Цырульников П.Г.
, Герасимов Е.Ю.
, Цыбуля С.В.
Фазовые превращения в системе Mn-Ga-O в зависимости от условий приготовления
Журнал структурной химии. 2018. Т.59. №7. С.1689-1696. DOI: 10.26902/JSC20180715RSCI РИНЦ OpenAlex
Фазовые превращения в системе Mn-Ga-O в зависимости от условий приготовления
Журнал структурной химии. 2018. Т.59. №7. С.1689-1696. DOI: 10.26902/JSC20180715RSCI РИНЦ OpenAlex
Dates:
| Submitted: | Apr 24, 2018 |
| Published print: | Dec 1, 2018 |
| Published online: | Dec 28, 2018 |
Identifiers:
| Web of science: | WOS:000453357600015 |
| Scopus: | 2-s2.0-85058656932 |
| Elibrary: | 38652476 |
| Chemical Abstracts: | 2018:2533470 |
| OpenAlex: | W2904814141 |