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Nickel supported over hierarchical zeolite 13X catalysts for enhanced conversion of carbon dioxide into methane
Department of Engineering Science and Mathematics , Luleå University of Technology , Luleå , Sweden.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
LS- Prozess- und Anlagentechnik, Brandenburgische Technische Universitat Cottbus, Cottbus, Senftenberg, Germany.
LS- Prozess- und Anlagentechnik, Brandenburgische Technische Universitat Cottbus, Cottbus, Senftenberg, Germany.
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2025 (Engelska)Ingår i: International Journal of Energy Research, ISSN 0363-907X, E-ISSN 1099-114X, Vol. 2025, nr 1, artikel-id 4728304Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Catalytic conversion of carbon dioxide (CO2) into useful chemicals such as methane (CH4) is a promising carbon utilization method that effectively mitigates CO2 and partially meets energy needs. The characteristics of commonly used nickel (Ni) supported meso/microporous catalysts for CO2 methanation can be tailored by tuning the structural properties of the support and adding promoters. This work investigated the Ni supported over hierarchical zeolite 13X (h13X) and incorporated with different promoters (Mg, Ca, Ce, and La) developed using the wet-impregnation method. The catalysts were thoroughly characterized using SEM, EDS, XRD, H2-TPR, CO2-TPD, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and N2 sorption and desorption techniques and evaluated for CO2 methanation. The impact of promoters on the characteristics of the catalysts was observed with improved surface basicity in CO2-TPD and metal-support interaction in H2-TPR analysis. Among the promoted catalysts, the NiLa/h13X catalyst exhibited the highest catalytic activity with a maximum conversion of 76% and CH4 selectivity of 98.5% at 400 degrees C and 20 bar at GHSV of 60,000 mL gcat-1 h-1, respectively. Regarding stability, the Mg-promoted catalyst exhibited better stability during 24 h of reaction than other catalysts, demonstrating better resilience against deactivation. The enhanced performance of the NiLa/h13X catalyst could be credited to the increased surface basicity, high surface area, and dispersion. This study highlights the potential of hierarchical porous zeolites for CO2 methanation and other heterogeneous reactions.

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John Wiley & Sons, 2025. Vol. 2025, nr 1, artikel-id 4728304
Nyckelord [en]
carbon dioxide, catalyst, hierarchical zeolite, methane, nickel, promoters
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URN: urn:nbn:se:umu:diva-242850DOI: 10.1155/er/4728304ISI: 001525586500001Scopus ID: 2-s2.0-105010566455OAI: oai:DiVA.org:umu-242850DiVA, id: diva2:1987895
Forskningsfinansiär
Vetenskapsrådet, 2018-04407Tillgänglig från: 2025-08-08 Skapad: 2025-08-08 Senast uppdaterad: 2025-08-08Bibliografiskt granskad

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Samikannu, AjaikumarMikkola, Jyri-Pekka

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