Insights into the Reactivity of Gd2−xSrxFe2O7 (x = 0 ÷ 0.4) in CO Radical Hydrogenation

Tatiana F. Sheshko; Elizaveta M. Borodina; Liliya V. Yafarova; Ekaterina B. Markova; Tatiana A. Kryuchkova; Alexander G. Cherednichenko; Irina A. Zvereva; Alexander O. Terent’ev

doi:10.3390/catal13091256

Catalysts (Aug 2023)

Insights into the Reactivity of Gd2−xSrxFe2O7 (x = 0 ÷ 0.4) in CO Radical Hydrogenation

Tatiana F. Sheshko,
Elizaveta M. Borodina,
Liliya V. Yafarova,
Ekaterina B. Markova,
Tatiana A. Kryuchkova,
Alexander G. Cherednichenko,
Irina A. Zvereva,
Alexander O. Terent’ev

Affiliations

Tatiana F. Sheshko: Department of Physical and Colloidal Chemistry, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
Elizaveta M. Borodina: Department of Physical and Colloidal Chemistry, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
Liliya V. Yafarova: Department of Chemical Thermodynamics and Kinetics, Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia
Ekaterina B. Markova: Department of Physical and Colloidal Chemistry, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
Tatiana A. Kryuchkova: Department of Physical and Colloidal Chemistry, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
Alexander G. Cherednichenko: Department of Physical and Colloidal Chemistry, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
Irina A. Zvereva: Department of Chemical Thermodynamics and Kinetics, Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia
Alexander O. Terent’ev: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia

DOI: https://doi.org/10.3390/catal13091256
Journal volume & issue: Vol. 13, no. 9
p. 1256

Abstract

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The effect of strontium substitution in the structure of the complex oxide Gd2SrFe2O7 on the production of light olefins by CO hydrogenation was investigated. Perovskite-type oxides Gd2−xSr1+xFe2O7 (x = 0; 0.1; 0.2; 0.3; 0.4) were synthesized by sol–gel technology and characterized by XRD, Mössbauer spectroscopy, BET specific area, acidity testing, and SEM. The experimental data revealed a correlation between the state of iron atoms, acidity, and catalytic performance. It was found that with an increase in the content of Sr2+ in the perovskite phase, the basicity of the surface and the oxygen diffusion rate increased. This contributed to the CO dissociative adsorption, formation of active carbon, and its further interaction with atomic hydrogen.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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