Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming

Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on the role of potassium as a promoter in Ni-based catalysts for reducing coke deposition during catalytic dry refo...

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Autores: Azancot, Lola, Blay, Vincent, Blay-Roger, Rubén, Bobadilla, Luis F., Penkova, Anna, Centeno, Miguel Ángel, Odriozola, José Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/358875
Acceso en línea:http://hdl.handle.net/10261/358875
https://api.elsevier.com/content/abstract/scopus_id/85123824228
Access Level:acceso abierto
Palabra clave:Catalytic stability
Heterogeneous catalysis
Methane dry reforming
Ni-O-K catalytic sites
Syngas
http://vocabularies.unesco.org/thesaurus/concept640
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repository_id_str
spelling Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reformingAzancot, LolaBlay, VincentBlay-Roger, RubénBobadilla, Luis F.Penkova, AnnaCenteno, Miguel ÁngelOdriozola, José AntonioCatalytic stabilityHeterogeneous catalysisMethane dry reformingNi-O-K catalytic sitesSyngashttp://vocabularies.unesco.org/thesaurus/concept640Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on the role of potassium as a promoter in Ni-based catalysts for reducing coke deposition during catalytic dry reforming. The study provides a new structural link between catalytic performance and physicochemical properties. We identify new Ni-O-K chemical states associated with high stability in the reforming process, evidenced by different characterization techniques. The nickel particles form a core surrounded by a Ni-O-K phase layer (Ni@Ni-O-K) during the reduction of the catalyst. This phase likely presents an alkali-nickelate-type structure, in which nickel is stabilized in oxidation state + 3. The Ni-O-K formation induces essential changes in the electronic, physical, structural, and morphological properties of the catalysts, notably enhancing their long-term stability in dry reforming. This work thus provides new directions for designing more efficient catalysts for sustainable gas-to-liquids processes.Peer reviewedElsevierAgencia Estatal de Investigación (España)Ministerio de Economía y Competitividad (España)European CommissionUniversidad de SevillaJunta de AndalucíaBobadilla, Luis F.[0000-0003-0085-9811]Centeno, Miguel Ángel[0000-0002-8349-3044]Odriozola, José Antonio[0000-0002-8283-0459]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/358875https://api.elsevier.com/content/abstract/scopus_id/85123824228reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Español#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096294-B-C33Applied Catalysis B: Environmentalhttps://doi.org/10.1016/j.apcatb.2022.121148Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3588752026-05-22T06:33:51Z
dc.title.none.fl_str_mv Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
title Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
spellingShingle Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
Azancot, Lola
Catalytic stability
Heterogeneous catalysis
Methane dry reforming
Ni-O-K catalytic sites
Syngas
http://vocabularies.unesco.org/thesaurus/concept640
title_short Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
title_full Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
title_fullStr Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
title_full_unstemmed Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
title_sort Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming
dc.creator.none.fl_str_mv Azancot, Lola
Blay, Vincent
Blay-Roger, Rubén
Bobadilla, Luis F.
Penkova, Anna
Centeno, Miguel Ángel
Odriozola, José Antonio
author Azancot, Lola
author_facet Azancot, Lola
Blay, Vincent
Blay-Roger, Rubén
Bobadilla, Luis F.
Penkova, Anna
Centeno, Miguel Ángel
Odriozola, José Antonio
author_role author
author2 Blay, Vincent
Blay-Roger, Rubén
Bobadilla, Luis F.
Penkova, Anna
Centeno, Miguel Ángel
Odriozola, José Antonio
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
Ministerio de Economía y Competitividad (España)
European Commission
Universidad de Sevilla
Junta de Andalucía
Bobadilla, Luis F.[0000-0003-0085-9811]
Centeno, Miguel Ángel[0000-0002-8349-3044]
Odriozola, José Antonio[0000-0002-8283-0459]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Catalytic stability
Heterogeneous catalysis
Methane dry reforming
Ni-O-K catalytic sites
Syngas
http://vocabularies.unesco.org/thesaurus/concept640
topic Catalytic stability
Heterogeneous catalysis
Methane dry reforming
Ni-O-K catalytic sites
Syngas
http://vocabularies.unesco.org/thesaurus/concept640
description Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on the role of potassium as a promoter in Ni-based catalysts for reducing coke deposition during catalytic dry reforming. The study provides a new structural link between catalytic performance and physicochemical properties. We identify new Ni-O-K chemical states associated with high stability in the reforming process, evidenced by different characterization techniques. The nickel particles form a core surrounded by a Ni-O-K phase layer (Ni@Ni-O-K) during the reduction of the catalyst. This phase likely presents an alkali-nickelate-type structure, in which nickel is stabilized in oxidation state + 3. The Ni-O-K formation induces essential changes in the electronic, physical, structural, and morphological properties of the catalysts, notably enhancing their long-term stability in dry reforming. This work thus provides new directions for designing more efficient catalysts for sustainable gas-to-liquids processes.
publishDate 2022
dc.date.none.fl_str_mv 2022
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/358875
https://api.elsevier.com/content/abstract/scopus_id/85123824228
url http://hdl.handle.net/10261/358875
https://api.elsevier.com/content/abstract/scopus_id/85123824228
dc.language.none.fl_str_mv Español
language_invalid_str_mv Español
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096294-B-C33
Applied Catalysis B: Environmental
https://doi.org/10.1016/j.apcatb.2022.121148
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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