Co-Precipitated FeOx@MOy (M = Si, Al, Ce, Zr) Mesoporous Oxide Catalysts in the Reaction of CO2 Hydrogenation to C2+ Hydrocarbons: Effect of the Catalyst Composition and Synthesis
- 1Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia
- 2N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
Abstract
Two series of co-precipitated FeOx@MOy catalysts with variation of the second component (M = silica, alumina, ceria, zirconia) prepared using CTMABr or Pluronic 123 templates were investigated to assess the effect of the composition and synthesis in CO2 hydrogenation reaction to C2+ hydrocarbons. Alumina- or silica-modified samples were prepared by the CTMABr-assisted route, and alumina-, silica-, ceria-, or zirconia-modified samples were obtained using Pluronic 123. All samples demonstrated uniform component distribution over the surface (by SEM–EDX) with a ratio close to the target value, and the predominant phase in most samples was maghemite with crystallite sizes reaching 17 nm (by XRD). All samples had a mostly mesoporous structure with a small amount of micropores. The highest catalytic activity was achieved for samples containing alumina and zirconia additives in the range of 25 to 50%. The decrease in zirconia content from 25 to 1 wt% did not affect the CO2 conversion rate but led to a decrease in methane selectivity from 34 to 21%, while the C2+ selectivity remained constant 21%. The highest CO2 conversion rates at 340 °C and 20 atm (12.3 and 12.9 mol(CO2) × kgcat−1 × h−1) were achieved with Fe1/Al1 P123 and Fe3/Zr1 P123 samples. The highest C2+ selectivity (26%) at the same temperature and pressure was achieved for the monometallic Fe P123 sample, but its CO2 conversion rate was 5.4 mol(CO2) × kgcat−1 × h−1.
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BibTeX
@article{beresnev2026coprecipitated,
title = {{Co-Precipitated FeOx@MOy (M = Si, Al, Ce, Zr) Mesoporous Oxide Catalysts in the Reaction of CO2 Hydrogenation to C2+ Hydrocarbons: Effect of the Catalyst Composition and Synthesis}},
author = {Kirill A. Beresnev and Mikhail Yu. Mashkin and Petr V. Pribytkov and Anastasiya A. Shesterkina and Gennady I. Kapustin and Igor V. Mishin and Olga P. Tkachenko and Sergey F. Dunaev and Konstantin B. Kalmykov and Leonid M. Kustov and Alexander L. Kustov},
journal = {Catalysts},
year = {2026},
month = oct,
doi = {10.3390/catal16110952},
url = {https://www.mdpi.com/2073-4344/16/11/952},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Co-Precipitated FeOx@MOy (M = Si, Al, Ce, Zr) Mesoporous Oxide Catalysts in the Reaction of CO2 Hydrogenation to C2+ Hydrocarbons: Effect of the Catalyst Composition and Synthesis
AU - Kirill A. Beresnev
AU - Mikhail Yu. Mashkin
AU - Petr V. Pribytkov
AU - Anastasiya A. Shesterkina
AU - Gennady I. Kapustin
AU - Igor V. Mishin
AU - Olga P. Tkachenko
AU - Sergey F. Dunaev
AU - Konstantin B. Kalmykov
AU - Leonid M. Kustov
AU - Alexander L. Kustov
PY - 2026
DA - 2026/10/27
JO - Catalysts
DO - 10.3390/catal16110952
UR - https://www.mdpi.com/2073-4344/16/11/952
AB - Two series of co-precipitated FeOx@MOy catalysts with variation of the second component (M = silica, alumina, ceria, zirconia) prepared using CTMABr or Pluronic 123 templates were investigated to assess the effect of the composition and synthesis in CO2 hydrogenation reaction to C2+ hydrocarbons. Alumina- or silica-modified samples were prepared by the CTMABr-assisted route, and alumina-, silica-, ceria-, or zirconia-modified samples were obtained using Pluronic 123. All samples demonstrated uniform component distribution over the surface (by SEM–EDX) with a ratio close to the target value, and the predominant phase in most samples was maghemite with crystallite sizes reaching 17 nm (by XRD). All samples had a mostly mesoporous structure with a small amount of micropores. The highest catalytic activity was achieved for samples containing alumina and zirconia additives in the range of 25 to 50%. The decrease in zirconia content from 25 to 1 wt% did not affect the CO2 conversion rate but led to a decrease in methane selectivity from 34 to 21%, while the C2+ selectivity remained constant 21%. The highest CO2 conversion rates at 340 °C and 20 atm (12.3 and 12.9 mol(CO2) × kgcat−1 × h−1) were achieved with Fe1/Al1 P123 and Fe3/Zr1 P123 samples. The highest C2+ selectivity (26%) at the same temperature and pressure was achieved for the monometallic Fe P123 sample, but its CO2 conversion rate was 5.4 mol(CO2) × kgcat−1 × h−1.
SN - 2073-4344
ER -