Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts

[EN] The influence of the metal selected as catalytic active phase in the two-step biomass pyrolysis-catalytic reforming strategy has been analyzed. The pyrolysis step was carried out in a conical spouted bed reactor at 500 ºC, whereas steam reforming was performed in a fluidized bed reactor at 600...

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Autores: Santamaría Moreno, Laura, López Zabalbeitia, Gartzen, Arregi Joaristi, Aitor, Artetxe Uria, Maite, Amutio Izaguirre, Maider, Bilbao Elorriaga, Javier, Olazar Aurrecoechea, Martin
Formato: artículo
Fecha de publicación:2020
País:España
Recursos:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/49922
Acesso em linha:http://hdl.handle.net/10810/49922
Access Level:acceso abierto
Palavra-chave:hydrogen
pyrolysis
reforming
biomass
bimetallic catalysts
cobalt
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spelling Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalystsSantamaría Moreno, LauraLópez Zabalbeitia, GartzenArregi Joaristi, AitorArtetxe Uria, MaiteAmutio Izaguirre, MaiderBilbao Elorriaga, JavierOlazar Aurrecoechea, Martinhydrogenpyrolysisreformingbiomassbimetallic catalystscobalt[EN] The influence of the metal selected as catalytic active phase in the two-step biomass pyrolysis-catalytic reforming strategy has been analyzed. The pyrolysis step was carried out in a conical spouted bed reactor at 500 ºC, whereas steam reforming was performed in a fluidized bed reactor at 600 ºC. Ni/Al2O3, Co/Al2O3 and two bimetallic Ni-Co/Al2O3 catalysts with different metal loadings were synthesized by wet impregnation method, and fresh and deactivated catalysts were characterized by N2 adsorption/desorption, X-ray Fluorescence (XRF), Temperature Programmed Reduction (TPR), X-Ray powder Diffraction (XRD), Temperature Programmed Oxidation (TPO), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Although Ni/Al2O3 and both bimetallic catalysts had similar initial activity in terms of (oxygenate conversion, (higher than 98%), the poorer metal dispersion observed in both bimetallic catalysts led to a fast decrease in conversion due to the promotion of coke formation on large particles. This occurred even though Ni-Co alloy formation has a positive influence by hindering the oxidation of Co0 species. The main cause for the deactivation of these catalysts is the formation of a coke with amorphous structure. The poor initial performance of Co/Al2O3 catalyst is related to changes in the Co0 oxidation state induced by the presence of steam, which led to a fast deactivation of this catalyst.This work was carried out with the financial support from Spain’s ministries of Economy and Competitiveness (CTQ2016-75535-R (AEI/FEDER, UE) and Science, Innovation and Universities (RTI2018-101678-B-I00 (MCIU/AEI/FEDER, UE)), Science and Innovation (PID2019-107357RB-I00), the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 823745, and the Basque Government (IT1218-19 and KK-2020/00107).ElsevierEuropean Commission202120212020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/49922reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/EC/H2020/823745info:eu-repo/grantAgreement/MINECO/CTQ2016-75535-R/info:eu-repo/grantAgreement/MCIU/RTI2018-101678-B-I00/info:eu-repo/grantAgreement/MCI/PID2019-107357RB-I00/https://doi.org/10.1016/j.jiec.2020.07.050info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/© 2020 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseoai:addi.ehu.eus:10810/499222026-06-18T09:23:17Z
dc.title.none.fl_str_mv Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
title Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
spellingShingle Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
Santamaría Moreno, Laura
hydrogen
pyrolysis
reforming
biomass
bimetallic catalysts
cobalt
title_short Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
title_full Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
title_fullStr Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
title_full_unstemmed Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
title_sort Catalytic steam reforming of biomass fast pyrolysis volatiles over Ni-Co bimetallic catalysts
dc.creator.none.fl_str_mv Santamaría Moreno, Laura
López Zabalbeitia, Gartzen
Arregi Joaristi, Aitor
Artetxe Uria, Maite
Amutio Izaguirre, Maider
Bilbao Elorriaga, Javier
Olazar Aurrecoechea, Martin
author Santamaría Moreno, Laura
author_facet Santamaría Moreno, Laura
López Zabalbeitia, Gartzen
Arregi Joaristi, Aitor
Artetxe Uria, Maite
Amutio Izaguirre, Maider
Bilbao Elorriaga, Javier
Olazar Aurrecoechea, Martin
author_role author
author2 López Zabalbeitia, Gartzen
Arregi Joaristi, Aitor
Artetxe Uria, Maite
Amutio Izaguirre, Maider
Bilbao Elorriaga, Javier
Olazar Aurrecoechea, Martin
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv hydrogen
pyrolysis
reforming
biomass
bimetallic catalysts
cobalt
topic hydrogen
pyrolysis
reforming
biomass
bimetallic catalysts
cobalt
description [EN] The influence of the metal selected as catalytic active phase in the two-step biomass pyrolysis-catalytic reforming strategy has been analyzed. The pyrolysis step was carried out in a conical spouted bed reactor at 500 ºC, whereas steam reforming was performed in a fluidized bed reactor at 600 ºC. Ni/Al2O3, Co/Al2O3 and two bimetallic Ni-Co/Al2O3 catalysts with different metal loadings were synthesized by wet impregnation method, and fresh and deactivated catalysts were characterized by N2 adsorption/desorption, X-ray Fluorescence (XRF), Temperature Programmed Reduction (TPR), X-Ray powder Diffraction (XRD), Temperature Programmed Oxidation (TPO), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Although Ni/Al2O3 and both bimetallic catalysts had similar initial activity in terms of (oxygenate conversion, (higher than 98%), the poorer metal dispersion observed in both bimetallic catalysts led to a fast decrease in conversion due to the promotion of coke formation on large particles. This occurred even though Ni-Co alloy formation has a positive influence by hindering the oxidation of Co0 species. The main cause for the deactivation of these catalysts is the formation of a coke with amorphous structure. The poor initial performance of Co/Al2O3 catalyst is related to changes in the Co0 oxidation state induced by the presence of steam, which led to a fast deactivation of this catalyst.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/49922
url http://hdl.handle.net/10810/49922
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/823745
info:eu-repo/grantAgreement/MINECO/CTQ2016-75535-R/
info:eu-repo/grantAgreement/MCIU/RTI2018-101678-B-I00/
info:eu-repo/grantAgreement/MCI/PID2019-107357RB-I00/
https://doi.org/10.1016/j.jiec.2020.07.050
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
© 2020 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
© 2020 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
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:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869404482883813376
score 15,300724

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