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High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4. / Venediktova, O. S.; Bulavchenko, O. A.; Tsyrulnikov, P. G. et al.

In: Journal of Structural Chemistry, Vol. 59, No. 2, 01.03.2018, p. 370-376.

Research output: Contribution to journal › Article › peer-review

Harvard

Venediktova, OS, Bulavchenko, OA, Tsyrulnikov, PG, Afonasenko, TN, Vinokurov, ZS & Tsybulya, SV 2018, 'High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4', Journal of Structural Chemistry, vol. 59, no. 2, pp. 370-376. https://doi.org/10.1134/S0022476618020166

APA

Venediktova, O. S., Bulavchenko, O. A., Tsyrulnikov, P. G., Afonasenko, T. N., Vinokurov, Z. S., & Tsybulya, S. V. (2018). High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4. Journal of Structural Chemistry, 59(2), 370-376. https://doi.org/10.1134/S0022476618020166

Vancouver

Venediktova OS, Bulavchenko OA, Tsyrulnikov PG, Afonasenko TN, Vinokurov ZS, Tsybulya SV. High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4. Journal of Structural Chemistry. 2018 Mar 1;59(2):370-376. doi: 10.1134/S0022476618020166

Author

Venediktova, O. S. ; Bulavchenko, O. A. ; Tsyrulnikov, P. G. et al. / High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4. In: Journal of Structural Chemistry. 2018 ; Vol. 59, No. 2. pp. 370-376.

BibTeX

@article{e4c30aa88eaa4c1d9e4d66ccb0a96a88,
title = "High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4",
abstract = "The stability of spinel-type mixed Mn1.5Ga1.5O4 oxide prepared in an inert medium (1000 °C, Ar) is studied by thermogravimetry and high-temperature X-ray diffraction in air in a wide temperature range 30–1000 °C. On heating, reversible decomposition processes of initial spinel are observed. From 30 °C to 600 °C oxygen atoms attach to the surface layer of initial Mn1.5Ga1.5O4 spinel to form a new phase distinct from parent oxide by the oxygen stoichiometry (cation vacancies are formed). The product of decomposition is two oxides: Mn1.5Ga1.5O4 and Mn1.5–xGa1.5–x[·]xO4. On the contrary, above 600 °C a loss of oxygen occurs, the concentration of cation vacancies decreases in Mn1.5–xGa1.5–x[·]xO4, and the reverse process of single phase oxide crystallization takes place. At 1000 °C the spinel phase forms again whose composition is similar to that of the initial parent phase Mn1.5Ga1.5O4. On cooling the decomposition of this phase is again observed due to oxygen attachment.",
keywords = "aluminum-manganese spinel, high-temperature X-ray diffraction, manganese-containing double oxides, manganese-gallium spinel, phase transformations, OXIDATION, ELECTRICAL-PROPERTIES, IONS, SINGLE-PHASE COBALT, OXIDE CATALYSTS, POLYMORPHS, ELECTROCATALYSTS, OXYGEN REDUCTION",
author = "Venediktova, {O. S.} and Bulavchenko, {O. A.} and Tsyrulnikov, {P. G.} and Afonasenko, {T. N.} and Vinokurov, {Z. S.} and Tsybulya, {S. V.}",
year = "2018",
month = mar,
day = "1",
doi = "10.1134/S0022476618020166",
language = "English",
volume = "59",
pages = "370--376",
journal = "Journal of Structural Chemistry",
issn = "0022-4766",
publisher = "Springer GmbH & Co, Auslieferungs-Gesellschaf",
number = "2",

}

RIS

TY - JOUR

T1 - High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4

AU - Venediktova, O. S.

AU - Bulavchenko, O. A.

AU - Tsyrulnikov, P. G.

AU - Afonasenko, T. N.

AU - Vinokurov, Z. S.

AU - Tsybulya, S. V.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The stability of spinel-type mixed Mn1.5Ga1.5O4 oxide prepared in an inert medium (1000 °C, Ar) is studied by thermogravimetry and high-temperature X-ray diffraction in air in a wide temperature range 30–1000 °C. On heating, reversible decomposition processes of initial spinel are observed. From 30 °C to 600 °C oxygen atoms attach to the surface layer of initial Mn1.5Ga1.5O4 spinel to form a new phase distinct from parent oxide by the oxygen stoichiometry (cation vacancies are formed). The product of decomposition is two oxides: Mn1.5Ga1.5O4 and Mn1.5–xGa1.5–x[·]xO4. On the contrary, above 600 °C a loss of oxygen occurs, the concentration of cation vacancies decreases in Mn1.5–xGa1.5–x[·]xO4, and the reverse process of single phase oxide crystallization takes place. At 1000 °C the spinel phase forms again whose composition is similar to that of the initial parent phase Mn1.5Ga1.5O4. On cooling the decomposition of this phase is again observed due to oxygen attachment.

AB - The stability of spinel-type mixed Mn1.5Ga1.5O4 oxide prepared in an inert medium (1000 °C, Ar) is studied by thermogravimetry and high-temperature X-ray diffraction in air in a wide temperature range 30–1000 °C. On heating, reversible decomposition processes of initial spinel are observed. From 30 °C to 600 °C oxygen atoms attach to the surface layer of initial Mn1.5Ga1.5O4 spinel to form a new phase distinct from parent oxide by the oxygen stoichiometry (cation vacancies are formed). The product of decomposition is two oxides: Mn1.5Ga1.5O4 and Mn1.5–xGa1.5–x[·]xO4. On the contrary, above 600 °C a loss of oxygen occurs, the concentration of cation vacancies decreases in Mn1.5–xGa1.5–x[·]xO4, and the reverse process of single phase oxide crystallization takes place. At 1000 °C the spinel phase forms again whose composition is similar to that of the initial parent phase Mn1.5Ga1.5O4. On cooling the decomposition of this phase is again observed due to oxygen attachment.

KW - aluminum-manganese spinel

KW - high-temperature X-ray diffraction

KW - manganese-containing double oxides

KW - manganese-gallium spinel

KW - phase transformations

KW - OXIDATION

KW - ELECTRICAL-PROPERTIES

KW - IONS

KW - SINGLE-PHASE COBALT

KW - OXIDE CATALYSTS

KW - POLYMORPHS

KW - ELECTROCATALYSTS

KW - OXYGEN REDUCTION

UR - http://www.scopus.com/inward/record.url?scp=85048203633&partnerID=8YFLogxK

U2 - 10.1134/S0022476618020166

DO - 10.1134/S0022476618020166

M3 - Article

AN - SCOPUS:85048203633

VL - 59

SP - 370

EP - 376

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 2

ER -

ID: 13794796