RT Journal Article
T1 Lignin hydrotreatment to aromatics products on metallic phosphides carbon-based catalysts produced from lignin
A1 García-Rollán, Miguel
A1 Bertran-Llorens, Salvador
A1 Palazzolo, Martin A.
A1 Deuss, Peter J.
A1 Heeres, Hero Jan
A1 Ruiz-Rosas, Ramiro Rafael
A1 Rosas-Martínez, Juana María
A1 Rodríguez-Mirasol, José
A1 Cordero-Alcántara, Tomás
K1 Lignina
K1 Carbón activado
K1 Catálisis
K1 Ingeniería química
AB The synthesis of active hydrodeoxygenation (HDO) catalytic systems for reductive fractionation of lignin implies the use of complex, expensive and non-renewable materials and methods. In this work, we propose the dual valorization of lignin by the preparation of carbon-based catalysts for the catalytic solvent-free hydrogenolysis of lignin to obtain compounds with high added-value. Highly mesoporous (Vmes > 1.00 cm3/g) and phosphorus-rich activated carbons were prepared by chemical activation of lignin with H3PO4. This simple process allowed the synthesis of carbon supports for the preparation of Ni, NiMo and CoMo catalysts, containing very active metal phosphides (Ni12P5 and MoNiP). These catalysts have presented high activity at 350 °C and 100 bar H2 in the reductive fractionation of Organosolv lignin, achieving yields to lignin-derived monomers higher than 12.50 wt%, using the NiMo catalyst, similar to the ones obtained by a commercial Ru/C catalyst. Within these monomers, the main group was the alkylphenols, presenting a selectivity close to 50 wt%, using the Ni catalyst. The reusability of NiMo catalyst revealed a partial loss of activity due to the formation of pyrolytic carbon on the Ni active sites. Thermogravimetric analyses confirmed that pyrolytic carbon could be partially removed by air treatment at 300 °C. In addition, the NiMo catalyst showed high activity in the hydrogenolysis process of a technical lignin with higher sulfur content, obtaining also high activity.
PB Elsevier
SN 0016-2361
YR 2025
FD 2025-02-12
LK https://hdl.handle.net/10630/38483
UL https://hdl.handle.net/10630/38483
LA eng
NO García-Rollán, M., Bertran-Llorens, S., Palazzolo, M. A., Deuss, P. J., Heeres, H. J., Ruiz-Rosas, R., Rosas, J. M., Rodriguez-Mirasol, J., & Cordero, T. (2025). Lignin hydrotreatment to aromatics products on metallic phosphides carbon-based catalysts produced from lignin. Fuel, 390, 134622.
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 25 ene 2026