RT Journal Article
T1 Modification of Sepiolite for Its Catalytic Upgrading in the Hydrogenation of Furfural
A1 Guerrero-Torres, Antonio
A1 Maderuelo-Solera, Rocío
A1 García-Sancho, Cristina
A1 Quirante-Sánchez, José Joaquín
A1 Moreno-Tost, Ramón
A1 Maireles-Torres, Pedro Jesús
A1 Cecilia-Buenestado, Juan Antonio
K1 Sepiolita
AB In this work, a new methodology for dispersing metal particles supported in clay has been described. For this purpose, a sepiolite has been modified by a microwave-assisted treatment to increase the surface area and pore volume due to the progressive leaching of the Mg2+-species located in the octahedral sheet. These materials have been used as support to incorporate Cu species on the surface by a precipitation-deposition process from the thermal decomposition of urea at 95 °C. Once calcined and reduced, the Cu-based catalysts showed a Cu0-particle size lower than 5 nm in the case of catalysts whose support is a sepiolite subjected to acid treatment. On the other hand, when raw sepiolite is used as a support, the Cu0-crystal size is much larger (15–20 nm). This difference in Cu0-crystal size showed a variable catalytic behavior for the hydrogenation reaction of furfural in gas-phase. Catalysts with larger particle size promote the hydrogenation reaction, obtaining a yield towards furfuryl alcohol close to 60% after 5 h at 190 °C. In contrast, catalysts with smaller particle size promote the hydrogenation reaction and subsequently the hydrogenolysis reaction, obtaining methylfuran as a product with a yield of 58% after 1 h of reaction at 190 °C; however, the sites where hydrogenolysis are involved are more prone to be deactivated.
PB MDPI
YR 2025
FD 2025
LK https://hdl.handle.net/10630/40299
UL https://hdl.handle.net/10630/40299
LA eng
NO Guerrero-Torres, A.; Maderuelo-Solera, R.; García-Sancho, C.; Quirante-Sánchez, J.J.; Moreno-Tost, R.; Maireles-Torres, P.J.; Cecilia, J.A. Modification of Sepiolite for Its Catalytic Upgrading in the Hydrogenation of Furfural. Ceramics 2025, 8, 21. https://doi.org/10.3390/ceramics8010021
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026