LAPSE:2023.23402
Published Article
LAPSE:2023.23402
A Study on CO2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts
March 27, 2023
Three Ni-based natural gas steam reforming catalysts, i.e., commercial JM25-4Q and JM57-4Q, and a laboratory-made catalyst (26% Ni on a 5% SiO2−95% Al2O3), are tested in a laboratory reactor, under carbon dioxide methanation and methane steam reforming operating conditions. The laboratory catalyst is more active in both CO2 methanation (equilibrium is reached at 623 K with 100% selectivity) and methane steam reforming (92% hydrogen yield at 890 K) than the two commercial catalysts, likely due to its higher nickel loading. In any case, commercial steam reforming catalysts also show interesting activity in CO2 methanation, reduced by K-doping. The interpretation of the experimental results is supported by a one-dimensional (1D) pseudo-homogeneous packed-bed reactor model, embedding the Xu and Froment local kinetics, with appropriate kinetic parameters for each catalyst. In particular, the H2O adsorption coefficient adopted for the commercial catalysts is about two orders of magnitude higher than for the laboratory-made catalyst, and this is in line with the expectations, considering that the commercial catalysts have Ca and K added, which may promote water adsorption.
Keywords
chemical reactor modeling, CO2 hydrogenation, Hydrogen, Ni-based catalysts, steam methane reforming
Suggested Citation
Garbarino G, Pugliese F, Cavattoni T, Busca G, Costamagna P. A Study on CO2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts. (2023). LAPSE:2023.23402
Author Affiliations
Garbarino G: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy; INSTM, UdR Genova, via Dodecaneso 31, I-16146 Genova, Italy
Pugliese F: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy [ORCID]
Cavattoni T: Department of Chemistry and Industrial, Chemistry University of Genova, via Dodecaneso 31, I-16146 Genova, Italy [ORCID]
Busca G: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy; INSTM, UdR Genova, via Dodecaneso 31, I-16146 Genova, Italy [ORCID]
Costamagna P: Department of Chemistry and Industrial, Chemistry University of Genova, via Dodecaneso 31, I-16146 Genova, Italy [ORCID]
Journal Name
Energies
Volume
13
Issue
11
Article Number
E2792
Year
2020
Publication Date
2020-06-01
Published Version
ISSN
1996-1073
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Original Submission
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PII: en13112792, Publication Type: Journal Article
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LAPSE:2023.23402
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doi:10.3390/en13112792
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Mar 27, 2023
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