162888 20251017144600.0 doi 10.1016/j.energy.2025.138183 sideral 145421 ART-2025-145421 eng Pascual, S. Universidad de Zaragoza Pilot-plant experimental tests and kinetic model validation of Ru-based catalytic methanation: assessment of operating pressure and filler material on carbon conversion 2025 Access copy available to the general public Unrestricted The production of synthetic methane is crucial for the energy transition in hard-to-electrify industries. This study assesses the reactor filler (Al2O3 and SiC) and operating pressure (1 and 4 bar) effects on methane performance of a commercial Ru-Al2O3 catalyst. Three catalytic methanation parameters are tested over a wide range: temperatures (200–450 °C), gas hourly space velocities (8000–120,000 h−1), and H2/CO2 molar ratios (3.5–5.5). Experiments are conducted in two pilot plants located at the Universidad de Zaragoza and the Silesian University of Technology. Results demonstrate a high level of reproducibility between the two pilot plants, using Al2O3 filler at 1 bar. Additionally, a kinetic model is validated with experimental measurements, showing an error margin of ±5 % between the model and experimental data. Regarding the effects of operational pressure and reactor filler, the best carbon conversion results are obtained with Al2O3 filler at 4 bar (up to 98 %). For both reactors, a 5 % reduction in carbon conversion is observed at 450 °C for SiC filler. Methane selectivity remains above 99 % in all cases, except for SiC filler at 1 bar (90 %). However, SiC filler shows better thermal diffusion, facilitating operational control. info:eu-repo/grantAgreement/ES/AEI/RYC2022-038283-I info:eu-repo/grantAgreement/ES/DGA/T46-17R info:eu-repo/grantAgreement/ES/MCIU/FPU23-00073 info:eu-repo/grantAgreement/ES/MICINN/PID2021-126164OB-I00 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Barón, C. Universidad de Zaragoza (orcid)0009-0008-0638-2640 Katla, D. Skorek-Osikowska, A. Wecel, D. Bailera, M. Universidad de Zaragoza (orcid)0000-0002-9174-9820 Legaz, J. Peña, B. Universidad de Zaragoza (orcid)0000-0001-9967-5806 Lisbona, P. Universidad de Zaragoza (orcid)0000-0002-2306-6729 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 335 (2025), 138183 [15 pp.] Energy Energy 0360-5442 2194041 http://zaguan.unizar.es/record/162888/files/texto_completo.pdf Versión publicada 2420094 http://zaguan.unizar.es/record/162888/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:162888 articulos driver 2025-10-17-14:13:57 ARTICLE