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Development of Ni-doped A-site lanthanides-based perovskite-type oxide catalysts for CO2 methanation by auto-combustion method
Department of Process and Plant Technology, Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Platz der Deutschen 1, Cottbus 03046, Germany; Department of Chemical Engineering Technology, Government College University Faisalabad: GCUF, Allama Iqbal Road, Faisalabad, Punjab 38000, Pakistan.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-6309-1761
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4888-6237
Department of Process and Plant Technology, Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Platz der Deutschen 1, 03046 Cottbus, Germany.ORCID iD: 0000-0002-8297-0232
2024 (English)In: RSC Advances, E-ISSN 2046-2069, Vol. 14, no 28, p. 20240-20253Article in journal (Refereed) Published
Abstract [en]

Engineering the interfacial interaction between the active metal element and support material is a promising strategy for improving the performance of catalysts toward CO2 methanation. Herein, the Ni-doped rare-earth metal-based A-site substituted perovskite-type oxide catalysts (Ni/AMnO3; A = Sm, La, Nd, Ce, Pr) were synthesized by auto-combustion method, thoroughly characterized, and evaluated for CO2 methanation reaction. The XRD analysis confirmed the perovskite structure and the formation of nano-size particles with crystallite sizes ranging from 18 to 47 nm. The Ni/CeMnO3 catalyst exhibited a higher CO2 conversion rate of 6.6 × 10−5 molCO2 gcat−1 s−1 and high selectivity towards CH4 formation due to the surface composition of the active sites and capability to activate CO2 molecules under redox property adopted associative and dissociative mechanisms. The higher activity of the catalyst could be attributed to the strong metal-support interface, available active sites, surface basicity, and higher surface area. XRD analysis of spent catalysts showed enlarged crystallite size, indicating particle aggregation during the reaction; nevertheless, the cerium-containing catalyst displayed the least increase, demonstrating resilience, structural stability, and potential for CO2 methanation reaction.

Place, publisher, year, edition, pages
Royal Society of Chemistry , 2024. Vol. 14, no 28, p. 20240-20253
National Category
Materials Chemistry
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-108222DOI: 10.1039/d4ra02106aISI: 001253164500001PubMedID: 38919281Scopus ID: 2-s2.0-85196892951OAI: oai:DiVA.org:ltu-108222DiVA, id: diva2:1880443
Funder
Swedish Research Council, 2018-04407
Note

Validerad;2024;Nivå 2;2024-07-01 (hanlid);

Funder: Bundesministerium für Bildung und Forschung (03SF0678);

Full text license: CC BY

Available from: 2024-07-01 Created: 2024-07-01 Last updated: 2024-11-20Bibliographically approved

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Shezad, NasirAkhtar, Farid

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