Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane

The increasing anthropogenic emissions of greenhouse gases (GHG) is encouraging extensive research in CO2 utilisation. Dry reforming of methane (DRM) depicts a viable strategy to convert both CO2 and CH4 into syngas, a worthwhile chemical intermediate. Among the different active phases for DRM, the...

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Autores: Martín Espejo, Juan Luis, Merkouri, Loukia Pantzechroula, Gándara Loe, Jesús, Odriozola Gordón, José Antonio, Ramírez Reina, Tomás, Pastor Pérez, Laura
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/159241
Acesso em linha:https://hdl.handle.net/11441/159241
https://doi.org/10.1016/j.jes.2023.01.022
Access Level:acceso abierto
Palavra-chave:CO2 conversion
Dry reforming of methane
Nickel catalysts
Pyrochlore
Cerium zirconate
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spelling Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methaneMartín Espejo, Juan LuisMerkouri, Loukia PantzechroulaGándara Loe, JesúsOdriozola Gordón, José AntonioRamírez Reina, TomásPastor Pérez, LauraCO2 conversionDry reforming of methaneNickel catalystsPyrochloreCerium zirconateThe increasing anthropogenic emissions of greenhouse gases (GHG) is encouraging extensive research in CO2 utilisation. Dry reforming of methane (DRM) depicts a viable strategy to convert both CO2 and CH4 into syngas, a worthwhile chemical intermediate. Among the different active phases for DRM, the use of nickel as catalyst is economically favourable, but typically deactivates due to sintering and carbon deposition. The stabilisation of Ni at different loadings in cerium zirconate inorganic complex structures is investigated in this work as strategy to develop robust Ni-based DRM catalysts. XRD and TPR-H2 analyses confirmed the existence of different phases according to the Ni loading in these materials. Besides, superficial Ni is observed as well as the existence of a CeNiO3 perovskite structure. The catalytic activity was tested, proving that 10 wt.% Ni loading is the optimum which maximises conversion. This catalyst was also tested in long-term stability experiments at 600 and 800°C in order to study the potential deactivation issues at two different temperatures. At 600°C, carbon formation is the main cause of catalytic deactivation, whereas a robust stability is shown at 800°C, observing no sintering of the active phase evidencing the success of this strategy rendering a new family of economically appealing CO2 and biogas mixtures upgrading catalysts.Ministerio de Ciencia e Innovación MCIN/AEI PID2019-108502RJ-I00, IJC2019-040560-I, RYC2018-024387-IScience PressQuímica InorgánicaMinisterio de Ciencia e Innovación (MICIN). España2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/159241https://doi.org/10.1016/j.jes.2023.01.022reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Environmental Sciences-China, 140, 12-23.PID2019-108502RJ-I00IJC2019-040560-IRYC2018-024387-Ihttps://doi.org/10.1016/j.jes.2023.01.022info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1592412026-06-17T12:51:07Z
dc.title.none.fl_str_mv Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
title Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
spellingShingle Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
Martín Espejo, Juan Luis
CO2 conversion
Dry reforming of methane
Nickel catalysts
Pyrochlore
Cerium zirconate
title_short Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
title_full Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
title_fullStr Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
title_full_unstemmed Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
title_sort Nickel-based cerium zirconate inorganic complex structures for CO2 valorisation via dry reforming of methane
dc.creator.none.fl_str_mv Martín Espejo, Juan Luis
Merkouri, Loukia Pantzechroula
Gándara Loe, Jesús
Odriozola Gordón, José Antonio
Ramírez Reina, Tomás
Pastor Pérez, Laura
author Martín Espejo, Juan Luis
author_facet Martín Espejo, Juan Luis
Merkouri, Loukia Pantzechroula
Gándara Loe, Jesús
Odriozola Gordón, José Antonio
Ramírez Reina, Tomás
Pastor Pérez, Laura
author_role author
author2 Merkouri, Loukia Pantzechroula
Gándara Loe, Jesús
Odriozola Gordón, José Antonio
Ramírez Reina, Tomás
Pastor Pérez, Laura
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Química Inorgánica
Ministerio de Ciencia e Innovación (MICIN). España
dc.subject.none.fl_str_mv CO2 conversion
Dry reforming of methane
Nickel catalysts
Pyrochlore
Cerium zirconate
topic CO2 conversion
Dry reforming of methane
Nickel catalysts
Pyrochlore
Cerium zirconate
description The increasing anthropogenic emissions of greenhouse gases (GHG) is encouraging extensive research in CO2 utilisation. Dry reforming of methane (DRM) depicts a viable strategy to convert both CO2 and CH4 into syngas, a worthwhile chemical intermediate. Among the different active phases for DRM, the use of nickel as catalyst is economically favourable, but typically deactivates due to sintering and carbon deposition. The stabilisation of Ni at different loadings in cerium zirconate inorganic complex structures is investigated in this work as strategy to develop robust Ni-based DRM catalysts. XRD and TPR-H2 analyses confirmed the existence of different phases according to the Ni loading in these materials. Besides, superficial Ni is observed as well as the existence of a CeNiO3 perovskite structure. The catalytic activity was tested, proving that 10 wt.% Ni loading is the optimum which maximises conversion. This catalyst was also tested in long-term stability experiments at 600 and 800°C in order to study the potential deactivation issues at two different temperatures. At 600°C, carbon formation is the main cause of catalytic deactivation, whereas a robust stability is shown at 800°C, observing no sintering of the active phase evidencing the success of this strategy rendering a new family of economically appealing CO2 and biogas mixtures upgrading catalysts.
publishDate 2023
dc.date.none.fl_str_mv 2023
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/11441/159241
https://doi.org/10.1016/j.jes.2023.01.022
url https://hdl.handle.net/11441/159241
https://doi.org/10.1016/j.jes.2023.01.022
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Environmental Sciences-China, 140, 12-23.
PID2019-108502RJ-I00
IJC2019-040560-I
RYC2018-024387-I
https://doi.org/10.1016/j.jes.2023.01.022
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Science Press
publisher.none.fl_str_mv Science Press
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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