A Study on CO 2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts

Gabriella Garbarino, Federico Pugliese, Tullio Cavattoni, Guido Busca and Paola Costamagna
Additional contact information
Gabriella Garbarino: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy
Federico Pugliese: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy
Tullio Cavattoni: Department of Chemistry and Industrial, Chemistry University of Genova, via Dodecaneso 31, I-16146 Genova, Italy
Guido Busca: Department of Civil, Chemical and Environmental Engineering, University of Genova, Chemical Engineering Pole, via Opera Pia 15, I-16145 Genova, Italy
Paola Costamagna: Department of Chemistry and Industrial, Chemistry University of Genova, via Dodecaneso 31, I-16146 Genova, Italy

Energies, 2020, vol. 13, issue 11, 1-19

Abstract: 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% SiO 2 –95% Al 2 O 3 ), are tested in a laboratory reactor, under carbon dioxide methanation and methane steam reforming operating conditions. The laboratory catalyst is more active in both CO 2 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 CO 2 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 H 2 O 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; CO 2 hydrogenation; hydrogen; Ni-based catalysts; steam methane reforming (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/11/2792/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/11/2792/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:11:p:2792-:d:365891

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().