dc.contributor.author | Cortázar Dueñas, María | |
dc.contributor.author | Álvarez Gordejuela, Jon | |
dc.contributor.author | Olazar Barona, Leire | |
dc.contributor.author | Santamaría Moreno, Laura | |
dc.contributor.author | López Zabalbeitia, Gartzen | |
dc.contributor.author | Villafan Vidales, Heidi Isabel | |
dc.contributor.author | Asueta, Asier | |
dc.contributor.author | Olazar Aurrecoechea, Martin | |
dc.date.accessioned | 2022-05-25T07:50:52Z | |
dc.date.available | 2022-05-25T07:50:52Z | |
dc.date.issued | 2022-06 | |
dc.identifier.citation | Fuel 317 : (2022) // Article ID 123457 | es_ES |
dc.identifier.issn | 0016-2361 | |
dc.identifier.issn | 1873-7153 | |
dc.identifier.uri | http://hdl.handle.net/10810/56715 | |
dc.description.abstract | [EN] The performance of olivine, dolomite and gamma-alumina primary catalysts was evaluated in the continuous tar elimination process in which toluene was selected as the biomass gasification tar model compound. Iron was incorporated into these catalysts in order to improve their catalytic activity. All the experiments were performed in a continuous flow fluidized bed micro-reactor, with a steam/toluene ratio of 4 and a space velocity (GHSV) of 820 h(-1), which corresponds to a catalyst amount of 3.8 cm(3). The effect of temperature was studied using olivine in the 800-900 degrees C range, which allowed concluding that 850 degrees C was the best temperature for tar removal. The fresh and deactivated catalysts were characterized by N-2 adsorption-desorption, X-ray fluorescence (XRF), X-ray diffraction (XRD) and temperature-programmed oxidation (TPO). Tar conversion efficiency was assessed by means of carbon conversion, H-2 yield (based on the maximum allowed by stoichiometry), gas composition and product yields, with Fe/Al2O3 leading to the highest conversion (87.6 %) and H-2 yield (38 %). Likewise, Fe/Al2O3 also provided the highest stability, as it allowed operating for long periods with high conversion values (85.9 % after 35 min on stream), although it underwent severe deactivation. The analysis of the spent catalysts revealed that deactivation occurred mainly by coke deposition on the catalyst surface and iron phase oxidation, with Fe/olivine and Fe/dolomite leading to the faster deactivation due to their poorer metal dispersion related to their reduced surface area. The TPO profiles showed that the coke deposited on the three catalysts was amorphous with a very small contribution of highly structured carbon. | es_ES |
dc.description.sponsorship | This work was carried out with the financial support of the grants RTI2018-098283-J-I00 and PID2019−107357RB-I00 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe” and the grants IT1218−19 and KK-2020/00107 funded by the Basque Government. Moreover, this project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 823745. | 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/MICIU/RTI2018-098283-J-I00 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PID2019−107357RB-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 | primary catalyst | es_ES |
dc.subject | biomass gasification | es_ES |
dc.subject | tar model compound | es_ES |
dc.subject | tar elimination | es_ES |
dc.subject | fluidized bed | es_ES |
dc.subject | catalyst deactivation | es_ES |
dc.title | Activity and stability of different Fe loaded primary catalysts for tar elimination | 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/S0016236122003222?via%3Dihub | es_ES |
dc.identifier.doi | 10.1016/j.fuel.2022.123457 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |