dc.contributor.author | García Gómez, Naiara | |
dc.contributor.author | Valecillos Díaz, José del Rosario | |
dc.contributor.author | Valle Pascual, Beatriz | |
dc.contributor.author | Remiro Eguskiza, Aingeru | |
dc.contributor.author | Bilbao Elorriaga, Javier | |
dc.contributor.author | Gayubo Cazorla, Ana Guadalupe | |
dc.date.accessioned | 2022-12-01T16:07:57Z | |
dc.date.available | 2022-12-01T16:07:57Z | |
dc.date.issued | 2022-10 | |
dc.identifier.citation | Fuel 326 : (2022) // Article ID 124966 | es_ES |
dc.identifier.issn | 0016-2361 | |
dc.identifier.issn | 1873-7153 | |
dc.identifier.uri | http://hdl.handle.net/10810/58646 | |
dc.description.abstract | A challenge for scaling up hydrogen production by raw bio-oil steam reforming (SR) is the rapid catalyst deactivation that is strongly sensitive to the temperature and bio-oil composition. This work studies the combined effect of both variables on the stability of a Ni/Al2O3 catalyst with high Ni dispersion in the internal and external surfaces of the particles, obtained by reduction of a NiAl2O4. The raw bio-oil composition is modified by (i) removal of phenolic compounds by liquid-liquid extraction or (ii) use of an online pre-reforming step with dolomite. Then, SR tests of the bio-oils at 600 and 700 ?C are carried out in a system with two online units, the first one for controlled deposition of pyrolytic lignin (and also pre-reforming with dolomite) and the second one (fluidized bed reactor) for the SR of the volatile oxygenates. The time on stream evolution of the conversion and products yields is related to the amount, nature and location of coke in the catalyst particles, determined with several techniques. For bio-oils with high or moderate phenolic content (raw or pre-reformed bio-oil, respectively), the SR at 600 ?C leads to a moderate deactivation. However, at 700 ?C, a refractory coke is formed, mainly composed of carbon filaments and turbostratic carbon among them that causes a rapid catalyst deactivation by blocking the external surface of the catalyst particle. Conversely, the removal of phenolic compounds from raw bio-oil leads to a more stable SR operation at 700 ?C, because the formation of turbostratic carbon is slowed down. | es_ES |
dc.description.sponsorship | This work has been carried out with the financial support of the grant RTI2018-100771-B-I00 and PhD grant BES-2016-078132 (N. GarciaG ' omez) funded by MCIN/AEI/10.13039/501100011033 and by "ERDF A way of making Europe", the European Commission (HORIZON H2020MSCA RISE 2018. Contract No. 823745) and the Department of Education, Universities and Investigation of Basque Government (Projects IT1218-19 and IT1645-22). The authors thank for technical and human support provided by SGIker (UPV/EHU/ERDF, EU), and to Calcinor S.A. for supplying the dolomite. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/823745 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/BES-2016-078132 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/RTI2018-100771-B-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | bio-oil steam reforming | es_ES |
dc.subject | hydrogen | es_ES |
dc.subject | NiAl2O4 spinel | es_ES |
dc.subject | catalyst deactivation | es_ES |
dc.subject | coke deposition | es_ES |
dc.title | Combined effect of bio-oil composition and temperature on the stability of Ni spinel derived catalyst for hydrogen production by steam reforming | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-
nc-nd/4.0/) | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0016236122018087?via%3Dihub | es_ES |
dc.identifier.doi | 10.1016/j.fuel.2022.124966 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |