Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction

A study was carried out on the effect of temperature (in the 500–800 °C range) and space–time (between 0.10 and 0.45 gcatalyst h(gbio-oil)− 1) on Ni/La2O3–αAl2O3 catalyst deactivation by coke deposition in the steam reforming of bio-oil aqueous fraction. The experiments were conducted in a two-step...

Descripción completa

Detalles Bibliográficos
Autores: Remiro Eguskiza, Aingeru, Valle Pascual, Beatriz, Aguayo Urquijo, Andrés Tomás, Bilbao Elorriaga, Javier, Gayubo Cazorla, Ana Guadalupe
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/64926
Acceso en línea:http://hdl.handle.net/10810/64926
Access Level:acceso abierto
Palabra clave:bio-oil
hydrogen
deactivation
Ni/La2O3–αAl2O3
catalyst
coke
id ES_13e0965bfff43da16c70b190891a09e2
oai_identifier_str oai:addi.ehu.eus:10810/64926
network_acronym_str ES
network_name_str España
repository_id_str
spelling Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fractionRemiro Eguskiza, AingeruValle Pascual, BeatrizAguayo Urquijo, Andrés TomásBilbao Elorriaga, JavierGayubo Cazorla, Ana Guadalupebio-oilhydrogendeactivationNi/La2O3–αAl2O3catalystcokeA study was carried out on the effect of temperature (in the 500–800 °C range) and space–time (between 0.10 and 0.45 gcatalyst h(gbio-oil)− 1) on Ni/La2O3–αAl2O3 catalyst deactivation by coke deposition in the steam reforming of bio-oil aqueous fraction. The experiments were conducted in a two-step system, provided with a thermal step at 200 °C for the pyrolytic lignin retention and an on-line step of catalytic reforming in fluidized bed reactor. Full bio-oil conversion and a hydrogen yield of around 95% (constant for 5 h) were achieved at 700 °C, S/C (steam/carbon) ratio of 12 and space–time of 0.45 gcatalyst h(gbio-oil)− 1. The results of catalyst deactivation were explained by mechanisms of coke formation and evolution, which are established based on kinetic results and coke analysis by temperature programmed combustion. At 700 °C the coke is gasified and Ni does not undergo sintering. The results of hydrogen yield were compared with those obtained in the literature using different reaction technologies.This work was carried out with the financial support of the Department of Education Universities and Investigation of the Basque Government (Project GIC07/24-IT-220-07), of the University of the Basque Country (UFI 11/39) and of the Ministry of Science and Innovation of the Spanish Government (Project CTQ2009-13428/PPQ)Elsevier202420242013info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/64926reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICIN/CTQ2009-13428/PPhttps://www.sciencedirect.com/science/article/pii/S0378382013002257info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/© 2013 Elsevier under CC BY-NC-ND licenseoai:addi.ehu.eus:10810/649262026-06-18T09:23:17Z
dc.title.none.fl_str_mv Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
title Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
spellingShingle Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
Remiro Eguskiza, Aingeru
bio-oil
hydrogen
deactivation
Ni/La2O3–αAl2O3
catalyst
coke
title_short Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
title_full Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
title_fullStr Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
title_full_unstemmed Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
title_sort Operating conditions for attenuating Ni/La2O3-αAl2O3 catalyst deactivation in the steam reforming of bio-oil aqueous fraction
dc.creator.none.fl_str_mv Remiro Eguskiza, Aingeru
Valle Pascual, Beatriz
Aguayo Urquijo, Andrés Tomás
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author Remiro Eguskiza, Aingeru
author_facet Remiro Eguskiza, Aingeru
Valle Pascual, Beatriz
Aguayo Urquijo, Andrés Tomás
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author_role author
author2 Valle Pascual, Beatriz
Aguayo Urquijo, Andrés Tomás
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author2_role author
author
author
author
dc.subject.none.fl_str_mv bio-oil
hydrogen
deactivation
Ni/La2O3–αAl2O3
catalyst
coke
topic bio-oil
hydrogen
deactivation
Ni/La2O3–αAl2O3
catalyst
coke
description A study was carried out on the effect of temperature (in the 500–800 °C range) and space–time (between 0.10 and 0.45 gcatalyst h(gbio-oil)− 1) on Ni/La2O3–αAl2O3 catalyst deactivation by coke deposition in the steam reforming of bio-oil aqueous fraction. The experiments were conducted in a two-step system, provided with a thermal step at 200 °C for the pyrolytic lignin retention and an on-line step of catalytic reforming in fluidized bed reactor. Full bio-oil conversion and a hydrogen yield of around 95% (constant for 5 h) were achieved at 700 °C, S/C (steam/carbon) ratio of 12 and space–time of 0.45 gcatalyst h(gbio-oil)− 1. The results of catalyst deactivation were explained by mechanisms of coke formation and evolution, which are established based on kinetic results and coke analysis by temperature programmed combustion. At 700 °C the coke is gasified and Ni does not undergo sintering. The results of hydrogen yield were compared with those obtained in the literature using different reaction technologies.
publishDate 2013
dc.date.none.fl_str_mv 2013
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/64926
url http://hdl.handle.net/10810/64926
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICIN/CTQ2009-13428/PP
https://www.sciencedirect.com/science/article/pii/S0378382013002257
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2013 Elsevier under CC BY-NC-ND license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2013 Elsevier under CC BY-NC-ND 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_ 1869403704051892224
score 15,300719

Similares en LA Referencia