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Effect of the Calcination Temperature on the Properties of MnOx–CuO–ZrO2–CeO2 Catalysts for CO Oxidation Full article

Journal Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779
Output data Year: 2024, Volume: 65, Number: 7, Pages: 1371-1386 Pages count : 16 DOI: 10.1134/s0022476624070084
Tags mixed oxides, CO oxidation, catalyst, fluorite structure, nanoparticles
Authors Bulavchenko O.A. 1 , Afonasenko T.N. 2 , Konovalova V.P. 1 , Rogov V.A. 1 , Gerasimov E.Yu. 1 , Aidakov E.E. 1,3 , Vinokurov Z.S. 1,3
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2 Center of New Chemical Technologies, Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Omsk, Russia
3 Synchrotron Radiation Facility “SKIF”, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Koltsovo, Russia

Funding (1)

1 Russian Science Foundation 21-73-10218

Abstract: Four-component oxide catalysts MnOx–CuO–ZrO2–CeO2 are synthesized by co-precipitation with varying the calcination temperature from 400 °C to 800 °C. Formation and decomposition processes in mixed oxides are studied by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The redox properties of the obtained samples are tested by temperature-programmed hydrogen reduction, and the catalytic characteristics are examined in the CO oxidation reaction. At 400-600 °C homogeneous solid solution MnxCuyZrzCeqO2 with the fluorite structure is formed. Temperature elevation to 700-800 °C facilitates the gradual decomposition of initial oxide, with manganese and copper cations leaving its composition in the form of highly dispersed CuO and CuxMn3–xO4 particles. The occurrence of different active states in the catalyst and their transitions into each other under the temperature effect is shown to maintain the high activity in the CO oxidation reaction up to 800 °C.
Cite: Bulavchenko O.A. , Afonasenko T.N. , Konovalova V.P. , Rogov V.A. , Gerasimov E.Y. , Aidakov E.E. , Vinokurov Z.S.
Effect of the Calcination Temperature on the Properties of MnOx–CuO–ZrO2–CeO2 Catalysts for CO Oxidation
Journal of Structural Chemistry. 2024. V.65. N7. P.1371-1386. DOI: 10.1134/s0022476624070084 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_skif_identifier_type
Original: Булавченко О.А. , Афонасенко Т.Н. , Коновалова В.П. , Рогов В.А. , Герасимов Е.Ю. , Айдаков Е.Е. , Винокуров З.С.
Влияние температуры прокаливания на свойства MnOх-CuO-ZrO2-CeO2 катализаторов окисления СО
Журнал структурной химии. 2024. Т.65. №7. 129103 . DOI: 10.26902/JSC_id129103 РИНЦ OpenAlex
Dates:
Submitted: Feb 9, 2024
Accepted: Mar 15, 2024
Published print: Jul 26, 2024
Published online: Jul 26, 2024
Identifiers:
Web of science: WOS:001278983100013
Scopus: 2-s2.0-85199804396
Elibrary: 68537991
Chemical Abstracts: 2024:1636929
OpenAlex: W4401010811
publication_identifier.sciact_skif_identifier_type: 3566
Citing: Пока нет цитирований
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