Enhanced plasma-assisted CO2 methanation on Ru/CeO2 catalysts
Musig, Beatrice ; Barauna, Jairo ; Roy, Abhijit (Universidad de Zaragoza) ; Arenal, Raul ; Gálvez, María Elena ; García, Tomás ; Murillo, Ramón ; Navarro, María Victoria
Resumen: Methanation process utilizes CO₂ as a carbon feedstock for synthesizing energy carriers and value-added chemicals. The combination of methanation with plasma-catalysis has emerged as a promising avenue for the electrification of power-to-gas technologies, representing a significant development in the transition to sustainable energy systems. The present study investigates the impact of low 5 % mol Ru loading on CeO2, focusing in the role of the metal in comparison to Ni and the metal-support interactions examined using CeO2 with different structures (nanoneedles, nanopowder) and Ru dispersion within the support. The catalyst Ru/NN with nanoneedles of ceria achieved CO₂ conversion of 70 % and CH₄ selectivity of 99 % at 1CO₂/4H₂, WHSV of 30 L h−1 gcat-1, 12 kgCO2 kgcat-1 h−1 and plasma input power of 8.9 W. The enhanced plasma-catalytic activity of Ru/NN can be attributed to the increased effective H2 dissociation, beneficial physicochemical and electrical properties attributed to the choice of support and optimal metal-support interaction. The lower dielectric capacitance calculated for this catalyst is the result of reduced charge storage and a faster response to the applied electric field. This produces less intense microdischarges and a more stable and uniform plasma environment.
Idioma: Inglés
DOI: 10.1016/j.jcou.2025.103240
Año: 2025
Publicado en: Journal of CO2 Utilization 102 (2025), 103240 [14 pp.]
ISSN: 2212-9820
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/LMP151-21
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2023-151080NB-I00
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
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.
Exportado de SIDERAL (2025-10-30-14:39:57)
Visitas y descargas
Idioma: Inglés
DOI: 10.1016/j.jcou.2025.103240
Año: 2025
Publicado en: Journal of CO2 Utilization 102 (2025), 103240 [14 pp.]
ISSN: 2212-9820
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/LMP151-21
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2023-151080NB-I00
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
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. Exportado de SIDERAL (2025-10-30-14:39:57)
Permalink:
Visitas y descargas
Este artículo se encuentra en las siguientes colecciones:
Articles > Artículos por área > Física de la Materia Condensada
Record created 2025-10-30, last modified 2025-10-30