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CuFeAl-Composite Catalysts of Oxidation of Gasification Products of Solid Fuels: In situ XAS and XRD Study Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Conference 17th International Conference on X-ray Absorption Fine Structure
22-27 Jul 2018 , Kraków
Journal Radiation Physics and Chemistry
ISSN: 0969-806X , E-ISSN: 1879-0895
Output data Year: 2020, Volume: 175, Number: SI, Article number : 108071, Pages count : 4 DOI: 10.1016/j.radphyschem.2018.11.025
Tags In situ XASIn situ XRDCuFeAl-composite catalystsCO oxidationCatalytic combustion
Authors Saraev A.A. 1,2 , Tsapina A.M. 1 , Fedorov A.V. 2 , Trigub A.L. 3 , Bulavchenko O.A. 1,2 , Vinokurov Z.S. 1 , Zubavichus Ya.V. 1,3 , Kaichev V.V. 1,2
Affiliations
1 Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090 Novosibirsk, Russia
2 Novosibirsk State University, Pirogova Str., 2, 630090 Novosibirsk, Russia
3 National Research Centre "Kurchatov Institute", Kurchatova sq. 1, 123182 Moscow, Russia

Funding (1)

1 Russian Science Foundation 17-73-20157

Abstract: The reduction of high-active FeAl and CuFeAl composite catalysts was investigated in situ by XRD and XAS in the temperature range between 100 and 600 °C. It was found that the fresh catalysts consist of Fe2O3 and Al2O3 phases only. The Al3+ cations partially dissolute in the Fe2O3 lattice. The addition of copper to the Fe-Al catalyst leads to formation of highly dispersed CuO nanoparticles and mixed oxide with a spinel-type crystalline structure similar to that of CuFe2O4. The low-temperature reduction of Cu2+ to Cu0 accelerates the Fe2O3 → Fe3O4 and FeO → Fe0 transformations. In the presence of oxygen we did not observe the reduction of Cu and Fe to the metallic state. This means that the oxidation of CO over FeAl and CuFeAl composite catalysts proceeds via a redox mechanism.
Cite: Saraev A.A. , Tsapina A.M. , Fedorov A.V. , Trigub A.L. , Bulavchenko O.A. , Vinokurov Z.S. , Zubavichus Y.V. , Kaichev V.V.
CuFeAl-Composite Catalysts of Oxidation of Gasification Products of Solid Fuels: In situ XAS and XRD Study
Radiation Physics and Chemistry. 2020. V.175. NSI. 108071 :1-4. DOI: 10.1016/j.radphyschem.2018.11.025 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 30, 2018
Accepted: Nov 25, 2018
Published online: Nov 26, 2018
Published print: Oct 1, 2020
Identifiers:
publication_identifier.wos_identifier_type WOS:000543372500036
publication_identifier.scopus_identifier_type 2-s2.0-85058150349
publication_identifier.rinz_identifier_type 38676166
publication_identifier.accession_number_identifier_type 2018:2537486
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