Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil

The effect of O2 content in the oxidative steam reforming (OSR) of raw bio-oil has been studied, and the kinetic behavior, particularly deactivation, has been compared between two catalyst (Ni/La2O3-αAl2O3 and Rh/CeO2-ZrO2). The experiments have been carried out in an equipment with two steps in ser...

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Autores: Remiro Eguskiza, Aingeru, Arandia Gutiérrez, Aitor, Bilbao Elorriaga, Javier, Gayubo Cazorla, Ana Guadalupe
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/64820
Acceso en línea:http://hdl.handle.net/10810/64820
Access Level:acceso abierto
Palabra clave:bio-oil
oxidative steam reforming
steam reforming
hydrogen production
coke
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spelling Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oilRemiro Eguskiza, AingeruArandia Gutiérrez, AitorBilbao Elorriaga, JavierGayubo Cazorla, Ana Guadalupebio-oiloxidative steam reformingsteam reforminghydrogen productioncokeThe effect of O2 content in the oxidative steam reforming (OSR) of raw bio-oil has been studied, and the kinetic behavior, particularly deactivation, has been compared between two catalyst (Ni/La2O3-αAl2O3 and Rh/CeO2-ZrO2). The experiments have been carried out in an equipment with two steps in series: 1) thermal treatment (at 500 ºC, for the controlled deposition of pyrolytic lignin), and; 2) catalytic in-line reforming in a fluidized bed. The reaction conditions have been as follows: oxygen/carbon ratio (O/C), 0, 0.17, 0.34 and 0.67; 700 ºC; steam/carbon ratio (S/C), 6; space time, 0.3 gcatalysth/gbio-oil (for Ni/La2O3-αAl2O3) and 0.15 gcatalysth/gbio-oil (for Rh/CeO2-ZrO2); time on stream, 4 h. The content and morphology of the coke deposited on the catalysts has been determined by temperature programmed oxidation (TPO), and the deterioration of the metallic properties of the catalysts by temperature programmed reduction (TPR) and X-ray diffraction (XRD). The results (bio-oil conversion, products yield and their evolution with time on stream) show that for Rh/CeO2-ZrO2 catalyst the decrease in coke deposition as O/C ratio is increased involves attenuation of catalyst deactivation. Consequently, this catalyst is stable after 24 h operation for high O/C ratios, thus keeping constant the activity for reforming reactions and the WGS reaction, with a high yield of H2 and low yields of CO, CH4 and hydrocarbons. However, for the Ni/La2O3-αAl2O3 catalyst of lower activity than the Rh/CeO2-ZrO2, the decrease in coke content as O/C ratio is increased does not involve a noticeable attenuation in catalyst deactivation, which is due to Ni sintering.This work was carried out with the financial support of the Department of Education Universities and Investigation of the Basque Government (IT748-13), the University of the Basque Country (UFI 11/39 and Remiro’s Postdoctoral grant) and the Ministry of Economy and Competitiveness of the Spanish Government jointly with the European Regional Development Funds (AEI/FEDER, UE) (Projects CTQ2012-35263 and CTQ2015-68883-R and Ph.D. grant BES-2013-063639 for A. Arandia).ACS202420242017info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/64820reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/CTQ2012-35263/info:eu-repo/grantAgreement/MINECO/CTQ2015-68883-R/info:eu-repo/grantAgreement/MINECO/BES-2013-063639/https://pubs.acs.org/doi/10.1021/acs.energyfuels.7b00735info:eu-repo/semantics/openAccesscopyright © 2017 American Chemical Societyoai:addi.ehu.eus:10810/648202026-06-18T09:23:17Z
dc.title.none.fl_str_mv Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
title Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
spellingShingle Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
Remiro Eguskiza, Aingeru
bio-oil
oxidative steam reforming
steam reforming
hydrogen production
coke
title_short Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
title_full Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
title_fullStr Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
title_full_unstemmed Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
title_sort Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
dc.creator.none.fl_str_mv Remiro Eguskiza, Aingeru
Arandia Gutiérrez, Aitor
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author Remiro Eguskiza, Aingeru
author_facet Remiro Eguskiza, Aingeru
Arandia Gutiérrez, Aitor
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author_role author
author2 Arandia Gutiérrez, Aitor
Bilbao Elorriaga, Javier
Gayubo Cazorla, Ana Guadalupe
author2_role author
author
author
dc.subject.none.fl_str_mv bio-oil
oxidative steam reforming
steam reforming
hydrogen production
coke
topic bio-oil
oxidative steam reforming
steam reforming
hydrogen production
coke
description The effect of O2 content in the oxidative steam reforming (OSR) of raw bio-oil has been studied, and the kinetic behavior, particularly deactivation, has been compared between two catalyst (Ni/La2O3-αAl2O3 and Rh/CeO2-ZrO2). The experiments have been carried out in an equipment with two steps in series: 1) thermal treatment (at 500 ºC, for the controlled deposition of pyrolytic lignin), and; 2) catalytic in-line reforming in a fluidized bed. The reaction conditions have been as follows: oxygen/carbon ratio (O/C), 0, 0.17, 0.34 and 0.67; 700 ºC; steam/carbon ratio (S/C), 6; space time, 0.3 gcatalysth/gbio-oil (for Ni/La2O3-αAl2O3) and 0.15 gcatalysth/gbio-oil (for Rh/CeO2-ZrO2); time on stream, 4 h. The content and morphology of the coke deposited on the catalysts has been determined by temperature programmed oxidation (TPO), and the deterioration of the metallic properties of the catalysts by temperature programmed reduction (TPR) and X-ray diffraction (XRD). The results (bio-oil conversion, products yield and their evolution with time on stream) show that for Rh/CeO2-ZrO2 catalyst the decrease in coke deposition as O/C ratio is increased involves attenuation of catalyst deactivation. Consequently, this catalyst is stable after 24 h operation for high O/C ratios, thus keeping constant the activity for reforming reactions and the WGS reaction, with a high yield of H2 and low yields of CO, CH4 and hydrocarbons. However, for the Ni/La2O3-αAl2O3 catalyst of lower activity than the Rh/CeO2-ZrO2, the decrease in coke content as O/C ratio is increased does not involve a noticeable attenuation in catalyst deactivation, which is due to Ni sintering.
publishDate 2017
dc.date.none.fl_str_mv 2017
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/10810/64820
url http://hdl.handle.net/10810/64820
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/CTQ2012-35263/
info:eu-repo/grantAgreement/MINECO/CTQ2015-68883-R/
info:eu-repo/grantAgreement/MINECO/BES-2013-063639/
https://pubs.acs.org/doi/10.1021/acs.energyfuels.7b00735
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
copyright © 2017 American Chemical Society
eu_rights_str_mv openAccess
rights_invalid_str_mv copyright © 2017 American Chemical Society
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ACS
publisher.none.fl_str_mv ACS
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
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score 15,300719

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