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Volume 12
Issue 3
10.3390/catal12030274
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Article

Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas

by
Angeliki I. Latsiou
1,
Olga A. Bereketidou
1,
Nikolaos D. Charisiou
1,
Amvrosios G. Georgiadis
1,
Dimitrios G. Avraam
1,2,* and
Maria A. Goula
1,*
1
Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece
2
Regional Unity of Imathia, Department of Environment and Hydroeconomy, GR-59131 Veria, Greece
*
Authors to whom correspondence should be addressed.
Catalysts 2022, 12(3), 274; https://doi.org/10.3390/catal12030274
Submission received: 24 January 2022 / Revised: 21 February 2022 / Accepted: 24 February 2022 / Published: 28 February 2022
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Abstract

For the work presented herein nickel catalysts supported on γ-alumina extrudates (Ni/Al) with an egg-shell structure were prepared, using a modified Equilibrium Deposition Filtration (EDF) technique. Their performance was compared, for the biogas dry reforming reaction, with corresponding Ni/Al catalysts with a uniform structure, synthesized via the conventional wet impregnation method. The bulk and surface physicochemical characteristics of all final catalysts were determined using ICP-AES, N2 adsorption-desorption isotherms, XRD, SEM, and TEM. A theoretical model describing the impregnation process for the EDF extrudates, based on the Lee and Aris model, was also developed. It was concluded that following specific impregnation conditions, the egg-shell macro-distributions can be successfully predicted, in agreement with the experimental results. It was shown that the Ni/Al catalysts with an egg-shell structure had a higher H2 yield in comparison with the ones with a uniform structure. The difference in catalytic performance was attributed to the improved surface and structural properties of the egg-shell catalysts, resulting from the modified EDF technique used for their preparation.
Keywords: biogas reforming; syngas production; nickel catalysts; egg-shell catalysts; surface properties; transport properties; theoretical modeling biogas reforming; syngas production; nickel catalysts; egg-shell catalysts; surface properties; transport properties; theoretical modeling

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MDPI and ACS Style

Latsiou, A.I.; Bereketidou, O.A.; Charisiou, N.D.; Georgiadis, A.G.; Avraam, D.G.; Goula, M.A. Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas. Catalysts 2022, 12, 274. https://doi.org/10.3390/catal12030274

AMA Style

Latsiou AI, Bereketidou OA, Charisiou ND, Georgiadis AG, Avraam DG, Goula MA. Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas. Catalysts. 2022; 12(3):274. https://doi.org/10.3390/catal12030274

Chicago/Turabian Style

Latsiou, Angeliki I., Olga A. Bereketidou, Nikolaos D. Charisiou, Amvrosios G. Georgiadis, Dimitrios G. Avraam, and Maria A. Goula. 2022. "Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas" Catalysts 12, no. 3: 274. https://doi.org/10.3390/catal12030274

APA Style

Latsiou, A. I., Bereketidou, O. A., Charisiou, N. D., Georgiadis, A. G., Avraam, D. G., & Goula, M. A. (2022). Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas. Catalysts, 12(3), 274. https://doi.org/10.3390/catal12030274

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