najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2026-17-1-69-80najo-1690Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХIn situ XRD study of the crystallization process of MnOx–ZrO2 oxideIn situ дифракционное исследование процесса кристаллизации MnOx-ZrO2 оксидаhttps://orcid.org/0000-0003-4101-599XКоноваловаВ. П.KonovalovaV. P.

Valeria P. Konovalova

Lavrentiev Ave, 5, Novosibirsk, 630090

lekorux@gmail.comhttps://orcid.org/0000-0002-3230-3335ГерасимовЕ. Ю.GerasimovE. Yu.

Evgeny Yu. Gerasimov

Lavrentiev Ave, 5, Novosibirsk, 630090

gerasimov@catalysis.ruhttps://orcid.org/0000-0002-2737-098XВинокуровЗ. С.VinokurovZ. S.

Zahar S. Vinokurov

Nikol’sky Prospekt,1, Kol’tsovo, 630559

vinzux@mail.ruhttps://orcid.org/0000-0001-7607-2025ПочтарьА. А.PochtarA. A.

Alena A. Pochtar

Lavrentiev Ave, 5, Novosibirsk, 630090

po4tar@catalysis.ruhttps://orcid.org/0000-0001-5944-2629БулавченкоО. А.BulavchenkoO. A.

Olga A. Bulavchenko

Lavrentiev Ave, 5, Novosibirsk, 630090

obulavchenko@catalysis.ruBoreskov Institute of Catalysis SB RASRussian FederationSynchrotron Radiation Facility SKIFRussian FederationBoreskov Institute of Catalysis SB RAS; Synchrotron Radiation Facility SKIFRussian Federation2026040320261716980Copyright © Konovalova V.P., Gerasimov E.Y., Vinokurov Z.S., Pochtar A.A., Bulavchenko O.A., 20262026Коновалова В.П., Герасимов Е.Ю., Винокуров З.С., Почтарь А.А., Булавченко О.А.Konovalova V.P., Gerasimov E.Y., Vinokurov Z.S., Pochtar A.A., Bulavchenko O.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1690

The crystallization process of MnOx–ZrO2 mixed oxide in different gas environments was studied by in situ X-ray diffraction and thermogravimetric analysis. The non-modified ZrO2 was used as a reference. The process of crystallization in Mn-containing sample dependents on the environment: the crystallization temperature in reducing and inert environment was 450 – 455 ◦C and in oxidizing it was 560 ◦C. Thus, the addition of manganese led to the shift of crystallization temperature to the higher values compared to reference sample ZrO2 (425 ◦C). The resulting crystalline phase was Zr1−yMnyO2 solid solution rather than pure zirconia. Mn cations seemed to stabilize the tetragonal zirconia instead of monoclinic.

Для изучения процесса кристаллизации смешанного MnOx-ZrO2 оксида в различных средах применялись методы in situ рентгеновской дифракции и термогравиметрического анализа. В качестве референсного образца использовался чистый ZrO2. Показано, что процесс кристаллизации в Mn-содержащем образце зависит от среды: температура кристаллизации в восстановительной и инертной среде составляла 450–455 C, а в окислительной – 560 °C. Таким образом, добавление марганца привело к смещению температуры кристаллизации в сторону более высоких значений по сравнению с чистым ZrO2 (425 °C). Полученная кристаллическая фаза представляет собой твердый раствор Zr1-yMnyO2, а не чистый ZrO2. Вероятно, катионы Mn позволили стабилизировать тетрагональный диоксид циркония вместо моноклинного.

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The authors declare that there are no conflicts of interest present.