Publication:
Production of phenolic compounds from argan shell waste by reductive catalytic fractionation

Date

2023

Authors

Afailal, Zainab
Gil-Lalaguna, Noemí
Høj, Martin
Sánchez, José Luis
Jensen, Anker Degn

Director

Publisher

Springer
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión publicada / Argitaratu den bertsioa

Project identifier

AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-114936RB-I00/ES/recolecta
Gobierno de Navarra//PC177-178

Abstract

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.

Description

Keywords

Agricultural waste, Argan shells, Hydrogenolysis, Native lignin, Reductive catalytic fractionation

Department

Ciencias / Zientziak / Institute for Advanced Materials and Mathematics - INAMAT2

Faculty/School

Degree

Doctorate program

item.page.cita

Afailal, Z., Gil-Lalaguna, N., Høj, M., Cornejo, A., Sánchez, J. L., Jensen, A. D. (2023) Production of phenolic compounds from argan shell waste by reductive catalytic fractionation. Biomass Conversion and Biorefinery, 1-20. https://doi.org/10.1007/s13399-023-04937-9.

item.page.rights

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