Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides

We show the applicability of a preparation method, previously reported for obtaining tailored bulk VCx catalysts, for alumina-supported G5TMCs. The characteristics of the G5TMCs/Al2O3 catalysts and their behaviour in the selective reduction of CO2 to CO through the RWGS reaction is reported. VCx/Al2...

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Autores: Pajares, Arturo, Ramírez de la Piscina, Pilar, Homs Martí, Narcís
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:dnet:recercat____::ed8f9a51f688cb5cb09871cd4c1085ef
Acceso en línea:https://hdl.handle.net/2445/229542
Access Level:acceso embargado
Palabra clave:Diòxid de carboni
Monòxid de carboni
Carbon dioxide
Carbon monoxide
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spelling Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbidesPajares, ArturoRamírez de la Piscina, PilarHoms Martí, NarcísDiòxid de carboniMonòxid de carboniCarbon dioxideCarbon monoxideWe show the applicability of a preparation method, previously reported for obtaining tailored bulk VCx catalysts, for alumina-supported G5TMCs. The characteristics of the G5TMCs/Al2O3 catalysts and their behaviour in the selective reduction of CO2 to CO through the RWGS reaction is reported. VCx/Al2O3 catalysts were active, stable and highly selective; meanwhile NbC/Al2O3 and TaC/Al2O3 were not active. VCx/Al2O3 catalysts exhibited selectivity to CO over 99.5 % at temperature above 773 K. The characteristics of alumina-supported vanadium carbide particles depended on the vanadium precursor and on the atmosphere used during the catalyst preparation. XPS characterization of VCx/Al2O3 catalysts revealed the presence of carbide species on surface before and after RWGS reaction. The catalytic behaviour of VCx/Al2O3 is analysed in the light of their characteristics and compared with bulk VCx counterparts. The most performant catalyst, VC(Pr)/Al2O3, was stable over 4 days at 723 K, with ∼100 % selectivity to CO and CO2 conversion of ∼11 %.Elsevier B.V.202620242026infoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.application/pdfhttps://hdl.handle.net/2445/229542Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.apcata.2024.119963Applied Catalysis A-General, 2024, vol. 687, num.2024, p. 1-9https://doi.org/10.1016/j.apcata.2024.119963cc-by-nc (c) Pajares, Arturo et al., 2024http://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/embargoedAccessoai:dnet:recercat____::ed8f9a51f688cb5cb09871cd4c1085ef2026-05-29T05:05:01Z
dc.title.none.fl_str_mv Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
title Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
spellingShingle Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
Pajares, Arturo
Diòxid de carboni
Monòxid de carboni
Carbon dioxide
Carbon monoxide
title_short Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
title_full Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
title_fullStr Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
title_full_unstemmed Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
title_sort Selective reduction of CO2 to CO over alumina-supported catalysts of group 5 transition metal carbides
dc.creator.none.fl_str_mv Pajares, Arturo
Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author Pajares, Arturo
author_facet Pajares, Arturo
Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author_role author
author2 Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author2_role author
author
dc.subject.none.fl_str_mv Diòxid de carboni
Monòxid de carboni
Carbon dioxide
Carbon monoxide
topic Diòxid de carboni
Monòxid de carboni
Carbon dioxide
Carbon monoxide
description We show the applicability of a preparation method, previously reported for obtaining tailored bulk VCx catalysts, for alumina-supported G5TMCs. The characteristics of the G5TMCs/Al2O3 catalysts and their behaviour in the selective reduction of CO2 to CO through the RWGS reaction is reported. VCx/Al2O3 catalysts were active, stable and highly selective; meanwhile NbC/Al2O3 and TaC/Al2O3 were not active. VCx/Al2O3 catalysts exhibited selectivity to CO over 99.5 % at temperature above 773 K. The characteristics of alumina-supported vanadium carbide particles depended on the vanadium precursor and on the atmosphere used during the catalyst preparation. XPS characterization of VCx/Al2O3 catalysts revealed the presence of carbide species on surface before and after RWGS reaction. The catalytic behaviour of VCx/Al2O3 is analysed in the light of their characteristics and compared with bulk VCx counterparts. The most performant catalyst, VC(Pr)/Al2O3, was stable over 4 days at 723 K, with ∼100 % selectivity to CO and CO2 conversion of ∼11 %.
publishDate 2024
dc.date.none.fl_str_mv 2024
2026
2026
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/229542
url https://hdl.handle.net/2445/229542
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.apcata.2024.119963
Applied Catalysis A-General, 2024, vol. 687, num.2024, p. 1-9
https://doi.org/10.1016/j.apcata.2024.119963
dc.rights.none.fl_str_mv cc-by-nc (c) Pajares, Arturo et al., 2024
http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv cc-by-nc (c) Pajares, Arturo et al., 2024
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv 9 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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