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Sustainable carbon-based nickel catalysts for the steam reforming of model compounds of pyrolysis liquids Cabrera-Reyes, Paula Palomo-Jiménez, José García-Mateos, Francisco José Ruiz-Rosas, Ramiro Rafael Rosas-Martínez, Juana María Rodríguez-Mirasol, José Cordero-Alcántara, Tomás Hidrógeno Pirólisis Steam reforming of biomass-derived pyrolysis liquids (bio-oil) to produce hydrogen with carbon-based Ni catalysts is gaining attention due to their advantages in terms of cost, sustainability and activity. However, the catalytic activity at long times on stream is compromised by either coke deposition or gasification of the support. To face these drawbacks, two activated carbons have been studied as Ni catalyst support: a microporous carbon of high purity and a mesoporous carbon with phosphorus surface groups. The activity and long-term stability of these catalysts have been studied for the steam reforming of model compounds of bio-oil. The microporous support provided a slightly higher H2 production and lower contribution of methanation reaction. However, gasification of this support after 20 h led to a decline in the activity, and massive formation of carbon nanotubes and coke. Nevertheless, the resulting material maintained an outstanding stability with high and stable H2/CO ratio for 50 h. The P-containing catalyst showed a remarkable long-term stability, but lower H2/CO ratio. Carbon gasification was less significant in this catalyst due to the presence of surface phosphorus groups, and the generation of nickel phosphides, which hampers the growth of pyrolytic carbon and carbon nanotubes, leading to a superior stability 2024-02-08T07:03:02Z 2024-02-08T07:03:02Z 2024-02-08T07:03:02Z 2024-01-03 journal article Paula Cabrera-Reyes, José Palomo, Francisco J. García-Mateos, Ramiro Ruiz-Rosas, Juana M. Rosas, José Rodríguez-Mirasol, Tomás Cordero, Sustainable carbon-based nickel catalysts for the steam reforming of model compounds of pyrolysis liquids, Fuel Processing Technology, Volume 253, 2024, 108028, ISSN 0378-3820, https://doi.org/10.1016/j.fuproc.2023.108028. (https://www.sciencedirect.com/science/article/pii/S0378382023003764) https://hdl.handle.net/10630/30022 10.1016/j.fuproc.2023.108028 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier