| Téléchargement | - Voir les données supplémentaires : FeOₓ nanoparticle doping on Cu/Al₂O₃ catalysts for the reverse water gas shift (PDF, 1.4 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.jcou.2022.102155 |
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| Auteur | Rechercher : Pahija, Ergys; Rechercher : Panaritis, Christopher; Rechercher : Rutherford, Brian; Rechercher : Couillard, Martin1; Rechercher : Patarachao, Bussaraporn1Identifiant ORCID : https://orcid.org/0000-0001-6711-5994; Rechercher : Shadbahr, Jalil1Identifiant ORCID : https://orcid.org/0000-0001-7991-6887; Rechercher : Bensebaa, Farid1Identifiant ORCID : https://orcid.org/0000-0003-3677-0923; Rechercher : Patience, Gregory S.; Rechercher : Boffito, Daria C. |
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| Affiliation | - Conseil national de recherches Canada. Énergie, les mines et l'environnement
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| Bailleur de fonds | Rechercher : Canada Research Chairs; Rechercher : National Research Council Canada |
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| Format | Texte, Article |
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| Sujet | reverse water gas shift; iron-oxide nanoparticles; FeCu catalyst; CO₂ Utilization; metal-support interaction |
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| Résumé | Coal-based electricity generation surged 22% in 2021 versus 2019 in the USA due to high natural gas prices and ease of transportation. This contradicts societies desire to produce clean energy and underscores the urgency to develop technologies to capture atmospheric CO₂ and produce value-added products. The reverse water gas shift (RWGS) converts CO₂ to CO, which is a basic intermediate for the chemical and petrochemical industries. Fe is the prime catalyst metal for this reaction and here we compare the activity of Fe clusters and 5 nm FeOₓ nanoparticles deposited on Cu/Al₂O₃. The catalytic activity towards the RWGS increases as a function of Fe doping. Fe clusters doping are non-uniform in size on Cu/Al₂O₃, whereas FeOₓ nanoparticles synthesized with the polyol method are uniform and well-dispersed on the Cu surface. The interaction between Cu and FeOₓ establishes a dual catalyst where FeOₓ and Cu activate CO₂ and H₂, respectively, an effect that is functionally equivalent to the metal-support interaction phenomenon. Furthermore, FeOₓ on Cu/Al₂O₃ (0.009 g g⁻¹ of Fe) converts 2-times more CO₂ than un-doped Cu/Al₂O₃ with a CO selectivity > 99%. Our method provides a technique to dope synthesized catalysts with nanoparticles to enhance their catalytic activity, selectivity and stability. |
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| Date de publication | 2022-07-27 |
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| Maison d’édition | Elsevier |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 4971c94e-9f92-4579-93ae-772533861330 |
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| Enregistrement créé | 2025-08-28 |
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| Enregistrement modifié | 2025-11-03 |
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