127929 20241125101144.0 doi 10.1007/s13399-023-04937-9 sideral 135091 ART-2023-135091 eng Afailal, Zainab (orcid)0000-0002-9091-672X Production of phenolic compounds from argan shell waste by reductive catalytic fractionation 2023 Access copy available to the general public Unrestricted For efficient utilization of lignocellulosic biomass components, reductive catalytic fractionation appears as a promising biorefinery strategy. In this work, this concept of biomass valorization was used to study the potential of an unexplored feedstock, argan shells. This material was processed in a non-catalytic route and over a Pd/C catalyst in two different reaction media. The effects of the treatment temperature (250, 275, and 300 °C), as well as the catalyst loading (catalyst/argan shells mass ratio of 0.05 and 0.1 g/g), were also studied. The main product (lignin-derived oil) was thoroughly characterized using GC/MS/FID, SEC, and NMR. The highest monomer yields of 48–49 wt% based on the lignin content were obtained for n-butanol/water reaction medium at 300 °C using a Pd/C catalyst load of 0.1 g/g and for methanol reaction medium at 275 °C and 0.05 g/g. Significantly lower monomeric phenol yields were obtained in the non-catalytic route (4–19 wt% for n-butanol/water and 9–16 wt% for methanol). The main phenolic monomers in the catalytic pathway were 4-n-propanolguaiacol, 4-n-propanolsyringol, and 4-alkyl guaiacols and syringols, with some differences in the selectivities from one solvent to another. info:eu-repo/grantAgreement/ES/AEI/PID2020-114936RB-I00 info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.5 2023 ENGINEERING, CHEMICAL 63 / 170 = 0.371 2023 Q2 T2 ENERGY & FUELS 94 / 171 = 0.55 2023 Q3 T2 0.595 2023 Renewable Energy, Sustainability and the Environment 2023 Q2 7.0 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Gil-Lalaguna, Noemí Universidad de Zaragoza (orcid)0000-0002-8704-9274 Høj, Martin Cornejo, Alfonso Sánchez, José Luis Universidad de Zaragoza (orcid)0000-0002-9705-2207 Jensen, Anker Degn 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente (2023), [20 pp.] Biomass convers. biorefin. Biomass Conversion and Biorefinery 2190-6815 5179139 http://zaguan.unizar.es/record/127929/files/texto_completo.pdf Versión publicada 2498772 http://zaguan.unizar.es/record/127929/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:127929 articulos driver 2024-11-22-12:03:52 ARTICLE