Issue 3, 2023

Flow-through reductive catalytic fractionation of beech wood sawdust

Abstract

The implementation of flow-through (FT) systems in the lignin-first approach can be a strategic tool for increasing the proficiency of biorefineries. Herein, the reductive catalytic fractionation (RCF) of waste beech wood sawdust (BWS) was conducted in an FT system using Ni on a nitrogen-doped carbon catalyst (35Ni/NDC) in pellet shape and MeOH and MeTHF as solvents. Lignin extraction was maximized in the first 4 h of time on stream (TOS), yielding maximum cumulative monomers of 247 mg gKL−1 using MeOH as solvent, extraction temperature of 235 °C, and reduction temperature of 225 °C. Importantly, the catalyst was used for two cycles and total time on stream (TOS) of 14 h without losing initial activity. These findings show that FT systems represent a promising solution for applications in lignin-first biorefineries.

Graphical abstract: Flow-through reductive catalytic fractionation of beech wood sawdust

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Article information

Article type
Paper
Submitted
17 10 2022
Accepted
26 1 2023
First published
26 1 2023
This article is Open Access
Creative Commons BY-NC license

RSC Sustain., 2023,1, 459-469

Flow-through reductive catalytic fractionation of beech wood sawdust

F. Brandi, B. Pandalone and M. Al-Naji, RSC Sustain., 2023, 1, 459 DOI: 10.1039/D2SU00076H

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