| Téléchargement | - Voir les données supplémentaires : Electrochemical in-situ activation of Fe-oxide nanowires for the reverse water gas shift reaction (DOCX, 2.0 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.apcatb.2020.118826 |
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| Auteur | Rechercher : Panaritis, ChristopherIdentifiant ORCID : https://orcid.org/0000-0002-8597-3041; Rechercher : Zgheib, Johnny; Rechercher : Ebrahim, Sayed A. H.; Rechercher : Couillard, Martin1; Rechercher : Baranova, Elena A.Identifiant ORCID : https://orcid.org/0000-0001-5993-2740 |
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| Affiliation | - Conseil national de recherches du Canada. Énergie, les mines et l'environnement
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| Format | Texte, Article |
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| Sujet | reverse water-gas shift (RWGS); iron-oxide; electrochemical promotion of catalysis; CO₂ utilization; NEMCA |
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| Résumé | The catalytic activity of FeOₓ nanowires (Ø = 5−6 nm) deposited on yttria-stabilized zirconia (YSZ) solid-electrolyte was enhanced through the application of external current or potential for the reverse water gas shift (RWGS) reaction. As shown by XPS, the as-prepared FeOₓ nanowires consist of the mixture of oxides: Fe₂O₃, Fe₃O₄ and some FeO. The nanowires showed 99 % selectivity to CO under both open-circuit and electrochemical polarization. We found that the oxidation state of iron depended on the reaction temperature and was in-situ controlled and modified upon anodic and cathodic polarization. Anodic polarization at 335 and 400 °C led to a 200 % increase in the reaction rate due to the electrooxidation of inactive FeₓC and supply of oxygen ions from YSZ to FeOₓ resulting in the formation of active oxide. Cathodic polarization resulted in up to 4-fold rate increase due to catalyst reduction increasing the coverage of CO₂ on the surface. |
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| Date de publication | 2020-02-29 |
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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 | e897244f-28eb-4b86-a6db-e7b95ec19e8d |
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| Enregistrement créé | 2020-06-26 |
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| Enregistrement modifié | 2020-10-30 |
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