000163735 001__ 163735 000163735 005__ 20251030150827.0 000163735 0247_ $$2doi$$a10.1016/j.jcou.2025.103240 000163735 0248_ $$2sideral$$a145827 000163735 037__ $$aART-2025-145827 000163735 041__ $$aeng 000163735 100__ $$aMusig, Beatrice 000163735 245__ $$aEnhanced plasma-assisted CO2 methanation on Ru/CeO2 catalysts 000163735 260__ $$c2025 000163735 5060_ $$aAccess copy available to the general public$$fUnrestricted 000163735 5203_ $$aMethanation 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. 000163735 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E13-23R$$9info:eu-repo/grantAgreement/ES/DGA/LMP151-21$$9info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICIU/PID2023-151080NB-I00 000163735 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es 000163735 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000163735 700__ $$aBarauna, Jairo 000163735 700__ $$aRoy, Abhijit$$uUniversidad de Zaragoza 000163735 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, Raul 000163735 700__ $$aGálvez, María Elena 000163735 700__ $$aGarcía, Tomás 000163735 700__ $$aMurillo, Ramón 000163735 700__ $$aNavarro, María Victoria 000163735 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada 000163735 773__ $$g102 (2025), 103240 [14 pp.]$$pJ. CO2 util.$$tJournal of CO2 Utilization$$x2212-9820 000163735 8564_ $$s9162937$$uhttps://zaguan.unizar.es/record/163735/files/texto_completo.pdf$$yVersión publicada 000163735 8564_ $$s2555148$$uhttps://zaguan.unizar.es/record/163735/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000163735 909CO $$ooai:zaguan.unizar.es:163735$$particulos$$pdriver 000163735 951__ $$a2025-10-30-14:39:57 000163735 980__ $$aARTICLE