RT info:eu-repo/semantics/article
T1 Evaluation of homogeneous and heterogeneous catalytic strategies for furfural production from sugar-derived biomass in a solvent-free green pressurized reaction media (subcritical water-CO2)
A1 Illera Gigante, Alba Ester
A1 Candela Gil, Helena
A1 Bermejo-López, A.
A1 Barea Gómez, Pedro
A1 Alonso Riaño, Patricia
A1 Benito Román, Oscar
A1 Beltrán Calvo, Sagrario
A1 Sanz Díez, Mª Teresa
K1 Catalysts
K1 Furfural
K1 Pressurized carbon dioxide
K1 Subcritical water
K1 Xylose
K1 Ingeniería química
K1 Chemical engineering
AB A green organic, solvent-free, subcritical water-CO2 (subW-CO2) system was proposed for the production of furfural from the main hemicellulose's sugar, xylose. Despite subW itself showed potential for furfural generation due to its catalytic properties under subcritical conditions; when CO2 was added into the system as pressurization agent, higher yields were reached due to its effect as a Brønsted acid when dissolved in water. Furthermore, its combination with different Lewis acidic catalysts showed a synergistic effect, further improving furfural yield. In a batch configuration, five homogeneous and four heterogeneous catalysts were tested at 180 °C and 5.5 MPa and compared for the first time in a subW-CO2 reaction medium. Different furfural production paths were determined for the two catalysts types, with higher xylose isomerization rates to xylulose when homogeneous trivalent metal catalysts were used. CrCl3 and Nafion NR50 resin were selected as best catalysts from each of the groups due to higher furfural production rates (51.9 ± 0.9 % yield/h) and higher furfural selectivity (60.9 %), respectively. Furthermore, Nafion NR50 catalytic activity remained unchanged after 10 runs at 180 °C. The green subW-CO2 system furfural yields were comparable to water-organic solvent biphasic ones, proving to be a promising green alternative.
PB Elsevier
SN 0961-9534
YR 2024
FD 2024-08
LK http://hdl.handle.net/10259/9582
UL http://hdl.handle.net/10259/9582
LA eng
NO This work was supported by the Agencia Estatal de Investigación (AEI), Ministerio de Ciencia e Innovación (MICINN) and Next Generation UE (Plan de Recuperaciónn, Transformación y Resiliencia) [grant numbers  TED2021-129311B–I00  and  PDC2022-133443-I00 ] and the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) [grant number  BU050P20 ]. Benito-Román post-doctoral contract was funded by AEI through project  PID2020–116716RJ-I00 . P. Barea predoctoral contract was funded by JCyL and the European Social Fund (ESF) by ORDEN EDU/ 1868/2022 , de 19 de diciembre.
DS Repositorio Institucional de la Universidad de Burgos
RD 22-dic-2024