CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study

The present paper addresses the nature of the active sites of a bimetallic Ni-Ru supported catalyst on the dry reforming of methane (DRM). The structural characterization by XRD and Raman spectroscopy, along with the reducibility study (TPR-H2) of the samples, evidenced the existence of a strong Ni–...

ver descrição completa

Detalhes bibliográficos
Autores: Álvarez Moreno, Andrea, Bobadilla Baladrón, Luis Francisco, Garcilaso, V., Centeno Gallego, Miguel Ángel, Odriozola Gordón, José Antonio
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2018
País:España
Recursos:Universidad de Sevilla (US)
Repositório:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/143922
Acesso em linha:https://hdl.handle.net/11441/143922
https://doi.org/10.1016/j.jcou.2018.01.027
Access Level:Acceso aberto
Palavra-chave:Dry reforming of methane
Ni-Ru bimetallic
Operando DRIFTS
id ES_147cc0f949518ea0ffe6bc65b1f85ea8
oai_identifier_str oai:idus.us.es:11441/143922
network_acronym_str ES
network_name_str España
repository_id_str
spelling CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS studyÁlvarez Moreno, AndreaBobadilla Baladrón, Luis FranciscoGarcilaso, V.Centeno Gallego, Miguel ÁngelOdriozola Gordón, José AntonioDry reforming of methaneNi-Ru bimetallicOperando DRIFTSThe present paper addresses the nature of the active sites of a bimetallic Ni-Ru supported catalyst on the dry reforming of methane (DRM). The structural characterization by XRD and Raman spectroscopy, along with the reducibility study (TPR-H2) of the samples, evidenced the existence of a strong Ni–Ru interaction in the bime- tallic system. We have assumed that Ru atoms block the most reactive Ni sites (step-edge sites) leaving less reactive centers for methane activation (terraces). In this way, operando DRIFTS measurements revealed that Ru decreases the catalytic activity but favors the carbon gasification and prevents the CO dissociation.Ministerio de Economía y Competitividad de España MINECO y fondos FEDER-ENE2013-47880-C3-2-R y ENE2015-66975-C3-2-RJunta de Andalucía y fondos FEDER-TEP-8196ElsevierQuímica InorgánicaMinisterio de Economia, Industria y Competitividad (MINECO). EspañaEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)Junta de Andalucía2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/143922https://doi.org/10.1016/j.jcou.2018.01.027reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Co2 Utilization, 24, 509-515.ENE2013-47880-C3-2-RENE2015-66975-C3-2-RTEP-8196https://doi.org/10.1016/j.jcou.2018.01.027info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1439222026-06-17T12:51:07Z
dc.title.none.fl_str_mv CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
title CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
spellingShingle CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
Álvarez Moreno, Andrea
Dry reforming of methane
Ni-Ru bimetallic
Operando DRIFTS
title_short CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
title_full CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
title_fullStr CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
title_full_unstemmed CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
title_sort CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study
dc.creator.none.fl_str_mv Álvarez Moreno, Andrea
Bobadilla Baladrón, Luis Francisco
Garcilaso, V.
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author Álvarez Moreno, Andrea
author_facet Álvarez Moreno, Andrea
Bobadilla Baladrón, Luis Francisco
Garcilaso, V.
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author_role author
author2 Bobadilla Baladrón, Luis Francisco
Garcilaso, V.
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Química Inorgánica
Ministerio de Economia, Industria y Competitividad (MINECO). España
European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)
Junta de Andalucía
dc.subject.none.fl_str_mv Dry reforming of methane
Ni-Ru bimetallic
Operando DRIFTS
topic Dry reforming of methane
Ni-Ru bimetallic
Operando DRIFTS
description The present paper addresses the nature of the active sites of a bimetallic Ni-Ru supported catalyst on the dry reforming of methane (DRM). The structural characterization by XRD and Raman spectroscopy, along with the reducibility study (TPR-H2) of the samples, evidenced the existence of a strong Ni–Ru interaction in the bime- tallic system. We have assumed that Ru atoms block the most reactive Ni sites (step-edge sites) leaving less reactive centers for methane activation (terraces). In this way, operando DRIFTS measurements revealed that Ru decreases the catalytic activity but favors the carbon gasification and prevents the CO dissociation.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/143922
https://doi.org/10.1016/j.jcou.2018.01.027
url https://hdl.handle.net/11441/143922
https://doi.org/10.1016/j.jcou.2018.01.027
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Co2 Utilization, 24, 509-515.
ENE2013-47880-C3-2-R
ENE2015-66975-C3-2-R
TEP-8196
https://doi.org/10.1016/j.jcou.2018.01.027
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1869403739426652160
score 15,301603

Registros relacionados