In Situ X-Ray Absorption Spectroscopy Study of Copper Ferrite and Copper Aluminate Reduction | Sciact - CRIS-system of Boreskov Institute of Catalysis

In Situ X-Ray Absorption Spectroscopy Study of Copper Ferrite and Copper Aluminate Reduction Full article

Journal

Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779

Output data

Year: 2025, Volume: 66, Number: 4, Pages: 689-701 Pages count : 13 DOI: 10.1134/S0022476625040055

Tags

CO oxidation, in situ study, copper ferrite, copper aluminate

Authors

Kremneva A.M. ¹ , Saraev A.A. ^1,2,3 , Mishenko D.D. ^1,2 , Khramov E.V. ⁴ , Trigub A.L. ⁴ , Kaichev V.V. ^1,3

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Synchrotron Radiation Facility–Siberian Circular Photon Source “SKIF” of the Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Koltsovo, Russia
3	Novosibirsk State University, Novosibirsk, Russia
4	National Research Center “Kurchatov Institute”, Moscow, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

075-15-2022-263

Catalysts based on copper ferrite and copper aluminate are highly active in the reaction of CO oxidation We report a detailed in situ X-ray absorption spectroscopy study of CuFe2O4 and CuAl2O4 reduction in a CO flow in the temperature range from 30 °C to 600 °C. It is shown that the reduction of copper ferrite and copper aluminate in a CO flow leads to the formation of metallic copper. The reduction of copper from Cu2+ to Cu1+ and Cu0 in copper ferrite occurs at lower temperatures (250-300 °C) than in copper aluminate (above 400 °C). The reduction of copper ferrite also leads to the formation of metallic iron as a result of the following stages: CuFe2O4 → Fe3O4 → FeO → Fe.

Kremneva A.M. , Saraev A.A. , Mishenko D.D. , Khramov E.V. , Trigub A.L. , Kaichev V.V.
In Situ X-Ray Absorption Spectroscopy Study of Copper Ferrite and Copper Aluminate Reduction
Journal of Structural Chemistry. 2025. V.66. N4. P.689-701. DOI: 10.1134/S0022476625040055 Scopus AN

Кремнева А.М. , Сараев А.А. , Мищенко Д.Д. , Храмов E.В. , Тригуб А.Л. , Каичев В.В.
In situ исследование восстановления феррита и алюмината меди методами спектроскопии рентгеновского поглощения
Журнал структурной химии. 2025. Т.66. №4. 142847 :1-13. DOI: 10.26902/jsc_id142847 РИНЦ OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Nov 22, 2024
Accepted:	Dec 6, 2024
Published online:	May 7, 2025

Scopus:	2-s2.0-105004438829
Chemical Abstracts:	2025:1066718

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