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The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content Full article

Journal Nanomaterials
, E-ISSN: 2079-4991
Output data Year: 2021, Volume: 11, Number: 4, Article number : 988, Pages count : 19 DOI: 10.3390/nano11040988
Tags Ceria; CO oxidation; Manganese oxide; Nanostructure; Solid solution
Authors Bulavchenko Olga A. 1 , Afonasenko Tatyana N. 2 , Osipov Alexey R. 2 , Pochtar’ Alena A. 1 , Saraev Andrey A. 1 , Vinokurov Zahar S. 1 , Gerasimov Evgeny Yu. 1 , Tsybulya Sergey V. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia
2 Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Neftezavodskaya 54, 644040 Omsk, Russia

Funding (2)

1 Russian Science Foundation 19-73-00097
2 Ministry of Science and Higher Education of the Russian Federation 05.621.21.0022 (RFMEFI62119X0022) (АААА-А20-120072290017-9)

Abstract: The Mn-Ce oxide catalysts active in the oxidation of CO were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), transition electron microscopy (TEM), energy dispersive X-Ray (EDX), and a differential dissolution technique. The Mn-Ce catalysts were prepared by thermal decomposition of oxalates by varying the Mn:Ce ratio. The nanocrystalline oxides with a fluorite structure and particle sizes of 4–6 nm were formed. The introduction of manganese led to a reduction of the oxide particle size, a decrease in the surface area, and the formation of a MnyCe1−yO2−δ solid solution. An increase in the manganese content resulted in the formation of manganese oxides such as Mn2O3, Mn3O4, and Mn5O8 . The catalytic activity as a function of the manganese content had a volcano-like shape. The best catalytic performance was exhibited by the catalyst containing ca. 50 at.% Mn due to the high specific surface area, the formation of the solid solution, and the maximum content of the solid solution. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Cite: Bulavchenko O.A. , Afonasenko T.N. , Osipov A.R. , Pochtar’ A.A. , Saraev A.A. , Vinokurov Z.S. , Gerasimov E.Y. , Tsybulya S.V.
The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content
Nanomaterials. 2021. V.11. N4. 988 :1-19. DOI: 10.3390/nano11040988 WOS Scopus РИНЦ AN PMID OpenAlex publication_identifier_short.sciact_ihcp_identifier_type
Files: Full text from publisher
Dates:
Submitted: Mar 15, 2021
Accepted: Apr 7, 2021
Published print: Apr 12, 2021
Published online: Apr 12, 2021
Identifiers:
Web of science: WOS:000643362900001
Scopus: 2-s2.0-85103894714
Elibrary: 46831653
Chemical Abstracts: 2021:1161992
PMID: 33921273
OpenAlex: W3156531554
publication_identifier.sciact_ihcp_identifier_type: 3617
Citing:
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Scopus 8
Web of science 7
Elibrary 10
OpenAlex 10
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