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Open AccessArticle
Syngas Production by Dry and Steam Reforming of a Model Biogas over Highly Active Bimetallic Co-Ir/Al2O3 Catalysts
by
Sholpan S. Itkulova
Sholpan S. Itkulova
,
Yerzhan Y. Nurmakanov
Yerzhan Y. Nurmakanov
Yerzhan A. Boleubayev
Yerzhan A. Boleubayev
Makpal A. Zhumash
Makpal A. Zhumash
Kuralay T. Tilegen
Kuralay T. Tilegen
1
D.V. Sokolsky Institute of Fuel, Catalysis and Electrochemistry, 142, Kunaev str., Almaty 050010, Kazakhstan
2
School of Chemical Engineering, Kazakh British Technical University, Tole bi Street, 59, Almaty 050010, Kazakhstan
3
Office of Research Core Facilities and HPC, Nazarbayev University, Ave. Kabanbay Batyr 53, Astana 010000, Kazakhstan
*
Author to whom correspondence should be addressed.
Catalysts 2026, 16(9), 836; https://doi.org/10.3390/catal16090836 (registering DOI)
Submission received: 19 June 2026
/
Revised: 14 September 2026
/
Accepted: 14 September 2026
/
Published: 17 September 2026
Abstract
Cobalt-based catalysts using aluminum oxide as a support and 0.025–0.10 wt.% iridium as a second metal were prepared by the impregnation method and tested in steam and dry reforming of a model biogas with a ratio of CH4:CO2 = 1:1. The processes were carried out in a fixed bed flow reactor under atmospheric pressure with a gas hourly space velocity of 1000–1500 h−1, and temperature varied in the range of 300–800 °C. The BET surface area, XRD, SEM, TEM, and H2-TPR methods were conducted to characterize the physicochemical properties of the “fresh” and “spent” samples of catalysts. The catalysts exhibit high and stable activity in the production of syngas from the biogas. Methane was almost completely converted at 750–800 °C in the steam reforming of biogas. Stability tests over 80–100 h confirmed the catalyst’s stable operation. Syngas with a ratio of H2/CO ~ 0.9 is formed in dry reforming of biogas, while in steam reforming the ratio exceeds 1. It is believed that the addition of iridium to Co/Al2O3 causes improvement of catalyst performance due to a synergetic effect because of the interaction between Co and Ir.
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MDPI and ACS Style
Itkulova, S.S.; Nurmakanov, Y.Y.; Boleubayev, Y.A.; Zhumash, M.A.; Tilegen, K.T.
Syngas Production by Dry and Steam Reforming of a Model Biogas over Highly Active Bimetallic Co-Ir/Al2O3 Catalysts. Catalysts 2026, 16, 836.
https://doi.org/10.3390/catal16090836
AMA Style
Itkulova SS, Nurmakanov YY, Boleubayev YA, Zhumash MA, Tilegen KT.
Syngas Production by Dry and Steam Reforming of a Model Biogas over Highly Active Bimetallic Co-Ir/Al2O3 Catalysts. Catalysts. 2026; 16(9):836.
https://doi.org/10.3390/catal16090836
Chicago/Turabian Style
Itkulova, Sholpan S., Yerzhan Y. Nurmakanov, Yerzhan A. Boleubayev, Makpal A. Zhumash, and Kuralay T. Tilegen.
2026. "Syngas Production by Dry and Steam Reforming of a Model Biogas over Highly Active Bimetallic Co-Ir/Al2O3 Catalysts" Catalysts 16, no. 9: 836.
https://doi.org/10.3390/catal16090836
APA Style
Itkulova, S. S., Nurmakanov, Y. Y., Boleubayev, Y. A., Zhumash, M. A., & Tilegen, K. T.
(2026). Syngas Production by Dry and Steam Reforming of a Model Biogas over Highly Active Bimetallic Co-Ir/Al2O3 Catalysts. Catalysts, 16(9), 836.
https://doi.org/10.3390/catal16090836
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