The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content Full article
Journal |
Nanomaterials
ISSN: 2079-4991 |
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Output data | Year: 2021, Volume: 11, Number: 4, Article number : 988, Pages count : 19 DOI: 10.3390/nano11040988 | ||||
Tags | manganese oxide; ceria; solid solution; nanostructure; CO oxidation | ||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Science Foundation | 19-73-00097 |
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.
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 OpenAlex
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 OpenAlex
Dates:
Submitted: | Mar 15, 2021 |
Published print: | Apr 12, 2021 |
Published online: | Apr 12, 2021 |
Accepted: | May 7, 2021 |
Identifiers:
Web of science: | WOS:000643362900001 |
Scopus: | 2-s2.0-85103894714 |
Elibrary: | 46831653 |
OpenAlex: | W3156531554 |