Development, testing, performance analysis and modelling of a biochar-based catalyst for methanation reaction
Peña, Begoña (Universidad de Zaragoza) ; Bailera, Manuel (Universidad de Zaragoza) ; Legaz, Jorge ; Barón, Cristian (Universidad de Zaragoza) ; Garlatti, Silvia ; Zampilli, M. ; Slopiecka, K.L. ; Guilera, Jordi ; Martín, Elena ; Fantozzi, Francesco ; Romeo, Luis M. (Universidad de Zaragoza) ; Lisbona, Pilar (Universidad de Zaragoza)
Resumen: Hydrogenation of CO2 to produce synthetic methane is a promising alternative to reduce the dependence on fossil fuels of high-temperature industrial processes hard to be electrified, contributing to mitigation of global warming. To reach enough conversion ratios and reasonable reactor sizes, the Sabatier reaction is usually performed via heterogeneous catalysis. Metallic catalysts, as nickel or ruthenium, are the most used supported over mesoporous alumina.
The present work proposes and fully investigates for the first time the use of olive kernel biochar obtained from pyrolysis as support of methanation catalyst. The so-obtained biochar, with 530 m2/g specific surface area, is evaluated as a cost-effective and sustainable support. A Ni-based (10 wt%) catalyst was synthesized and tested in a fixed-bed methanation pilot plant. The obtained conversion ratios for gas hourly space velocity of 6000 h−1 were above 60 % for stoichiometric ratio and atmospheric pressure. A kinetic model was developed and validated with experimental measurements, finding discrepancies below 10 % between predictions and experiments. Even though the H2-TPR analyses revealed incomplete nickel reduction during the activation stage, the preliminary results are very promising as the achieved performance figures are similar, even higher, than that obtained in pressurized facilities and/or using Ni-Ce catalysts.
Idioma: Inglés
DOI: 10.1016/j.renene.2025.123248
Año: 2025
Publicado en: Renewable Energy 250 (2025), 123248 [10 pp.]
ISSN: 0960-1481
Financiación: info:eu-repo/grantAgreement/ES/AEI/RYC2022-038283-I
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T46-17R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-126164OB-I00/AEI/10.13039/501100011033
Tipo y forma: Article (Published version)
Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
Exportado de SIDERAL (2025-10-17-14:22:39)
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The present work proposes and fully investigates for the first time the use of olive kernel biochar obtained from pyrolysis as support of methanation catalyst. The so-obtained biochar, with 530 m2/g specific surface area, is evaluated as a cost-effective and sustainable support. A Ni-based (10 wt%) catalyst was synthesized and tested in a fixed-bed methanation pilot plant. The obtained conversion ratios for gas hourly space velocity of 6000 h−1 were above 60 % for stoichiometric ratio and atmospheric pressure. A kinetic model was developed and validated with experimental measurements, finding discrepancies below 10 % between predictions and experiments. Even though the H2-TPR analyses revealed incomplete nickel reduction during the activation stage, the preliminary results are very promising as the achieved performance figures are similar, even higher, than that obtained in pressurized facilities and/or using Ni-Ce catalysts.
Idioma: Inglés
DOI: 10.1016/j.renene.2025.123248
Año: 2025
Publicado en: Renewable Energy 250 (2025), 123248 [10 pp.]
ISSN: 0960-1481
Financiación: info:eu-repo/grantAgreement/ES/AEI/RYC2022-038283-I
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T46-17R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-126164OB-I00/AEI/10.13039/501100011033
Tipo y forma: Article (Published version)
Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2025-10-17-14:22:39)
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Record created 2025-05-22, last modified 2025-10-17