Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation

Catalytic hydrogenation of CO2 to produce value-added hydrocarbons is a promising strategy for reducing greenhouse gas emissions and producing renewable fuels and chemicals. In this study, Ru- g-C3 N₄4 catalysts were modified with barium (Ba) and magnesium (Mg) promoters to improve the conversion ef...

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Detalles Bibliográficos
Autores: Quintana, L.M., Vuong, T.H., Rabee, A.I.M., Rabeah, J., Dongil, A.B.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/425687
Acceso en línea:http://hdl.handle.net/10261/425687
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010823043&doi=10.1016%2Fj.jcou.2025.103158&partnerID=40&md5=a6f1095dd65f26e00c6f1bb25bd332ce
Access Level:acceso abierto
Palabra clave:Ba
CO<sub>2</sub> conversion
Graphitic carbon nitride
Methanation
Mg
Ru
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spelling Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanationQuintana, L.M.Vuong, T.H.Rabee, A.I.M.Rabeah, J.Dongil, A.B.BaCO<sub>2</sub> conversionGraphitic carbon nitrideMethanationMgRuCatalytic hydrogenation of CO2 to produce value-added hydrocarbons is a promising strategy for reducing greenhouse gas emissions and producing renewable fuels and chemicals. In this study, Ru- g-C3 N₄4 catalysts were modified with barium (Ba) and magnesium (Mg) promoters to improve the conversion efficiency of CO2 and tune the products selectivity of the Ru/g-C3 N4 catalysts. Two different synthetic approaches were used; namely, co-impregnation with Ru and pre-incorporation of Ba or Mg into the g-C3N4 lattice prior to Ru loading. The study revealed that Ba modification significantly improved the catalyst's performance, resulting in higher CO2 conversion rates and the selective formation of CH4. This enhancement is attributed to the electronic and structural modifications induced by doping Ba into the g-C3N4 lattice that facilitate CO2 activation and hydrogenation. In contrast, adding Ba via co-impregnation partially covered Ru sites, promoting CO formation by stabilizing isolated Ru sites and small clusters, as confirmed by in-situ CO adsorption studies. Conversely, Mg had a negative effect, likely due to more pronounced coverage of Ru active sites, which suppressed catalytic performance. These findings emphasise the importance of selecting suitable promoters to optimise CO2 hydrogenation catalysts, with Ba-doped Ru/g-C3 N4 emerging as an effective system for methane synthesis. © 2025 The Authors.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/425687https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010823043&doi=10.1016%2Fj.jcou.2025.103158&partnerID=40&md5=a6f1095dd65f26e00c6f1bb25bd332cereponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.jcou.2025.103158https://doi.org/10.1016/j.jcou.2025.103158Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4256872026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
title Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
spellingShingle Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
Quintana, L.M.
Ba
CO<sub>2</sub> conversion
Graphitic carbon nitride
Methanation
Mg
Ru
title_short Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
title_full Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
title_fullStr Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
title_full_unstemmed Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
title_sort Effect of Ba and Mg as promoter on Ru/g-C3N4 catalyst for CO2 methanation
dc.creator.none.fl_str_mv Quintana, L.M.
Vuong, T.H.
Rabee, A.I.M.
Rabeah, J.
Dongil, A.B.
author Quintana, L.M.
author_facet Quintana, L.M.
Vuong, T.H.
Rabee, A.I.M.
Rabeah, J.
Dongil, A.B.
author_role author
author2 Vuong, T.H.
Rabee, A.I.M.
Rabeah, J.
Dongil, A.B.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ba
CO<sub>2</sub> conversion
Graphitic carbon nitride
Methanation
Mg
Ru
topic Ba
CO<sub>2</sub> conversion
Graphitic carbon nitride
Methanation
Mg
Ru
description Catalytic hydrogenation of CO2 to produce value-added hydrocarbons is a promising strategy for reducing greenhouse gas emissions and producing renewable fuels and chemicals. In this study, Ru- g-C3 N₄4 catalysts were modified with barium (Ba) and magnesium (Mg) promoters to improve the conversion efficiency of CO2 and tune the products selectivity of the Ru/g-C3 N4 catalysts. Two different synthetic approaches were used; namely, co-impregnation with Ru and pre-incorporation of Ba or Mg into the g-C3N4 lattice prior to Ru loading. The study revealed that Ba modification significantly improved the catalyst's performance, resulting in higher CO2 conversion rates and the selective formation of CH4. This enhancement is attributed to the electronic and structural modifications induced by doping Ba into the g-C3N4 lattice that facilitate CO2 activation and hydrogenation. In contrast, adding Ba via co-impregnation partially covered Ru sites, promoting CO formation by stabilizing isolated Ru sites and small clusters, as confirmed by in-situ CO adsorption studies. Conversely, Mg had a negative effect, likely due to more pronounced coverage of Ru active sites, which suppressed catalytic performance. These findings emphasise the importance of selecting suitable promoters to optimise CO2 hydrogenation catalysts, with Ba-doped Ru/g-C3 N4 emerging as an effective system for methane synthesis. © 2025 The Authors.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/425687
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010823043&doi=10.1016%2Fj.jcou.2025.103158&partnerID=40&md5=a6f1095dd65f26e00c6f1bb25bd332ce
url http://hdl.handle.net/10261/425687
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105010823043&doi=10.1016%2Fj.jcou.2025.103158&partnerID=40&md5=a6f1095dd65f26e00c6f1bb25bd332ce
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.jcou.2025.103158
https://doi.org/10.1016/j.jcou.2025.103158
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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