2026-05-31T08:18:51Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/301672026-02-03T11:20:32Zcom_10630_2254col_10630_37953

Fischer-Tropsch synthesis over lignin-derived cobalt-containing porous carbon fiber catalysts Valero-Romero, María José García-Mateos, Francisco José Kapteijn, Freek Rodríguez-Mirasol, José Cordero-Alcántara, Tomás Proceso Fischer-Tropsch Cobalt-containing lignin-based fibers were synthesized in one step by electrospinning of Alcell lignin solutions as carbon precursor, a low-cost and renewable co-product of the paper making industry. The lignin fibers were thermostabilized in air to avoid the fusion during the carbonization process between 500 and 800 °C to obtain cobalt-containing porous carbon submicron fibers. These carbon fibers catalysts were studied for the Low-Temperature Fischer-Tropsch synthesis. The lignin-derived fibers containing Co catalyst located on the overall carbon fiber surface (internal and external) heat-treated at 500 °C (Co@CF-500) showed the best catalytic performance after 70 h on stream, with 75% and 60% selectivity to C5+ at 220 °C and H2/CO ratios of 1 and 2, respectively, attributed to the high Co dispersion, optimal Co-particle size and better Co accessibility. Higher heat-treatment temperatures leaded to Co-containing carbon fibers with larger metallic cobalt nanoparticles encapsulated in graphitic-type carbon, which rendered them inaccessible for FTS. 2024-02-08T14:56:14Z 2024-02-08T14:56:14Z 2023 journal article M.J. Valero-Romero, F.J. García-Mateos, Freek Kapteijn, J. Rodríguez-Mirasol, T. Cordero, Fischer-Tropsch synthesis over lignin-derived cobalt-containing porous carbon fiber catalysts, Applied Catalysis B: Environmental, Volume 321, 2023, 122078, ISSN 0926-3373, https://doi.org/10.1016/j.apcatb.2022.122078. https://hdl.handle.net/10630/30167 10.1016/j.apcatb.2022.122078 eng open access Elsevier