Volume 2, 2024

Direct biomass valorisation to γ-valerolactone by Ru-PNP catalysed hydrogenation in acid

Abstract

Converting carbohydrate-rich biomass waste directly to γ-valerolactone (GVL) is highly attractive but challenging owing to the inert nature and high complexity of biomass, necessitating a versatile and selective catalytic system. Herein, we describe the first direct conversion of monosaccharides (glucose, fructose, and xylose) and polysaccharides (cellulose and hemicellulose) in high yields under mild conditions. We also present the first direct conversion of raw lignocellulose, starch, and chitin biomass to GVL. Using the homogeneous catalyst Ru-MACHO-BH in H3PO4(aq) under 30 bar H2 at 125–140 °C for 24–120 hours provides GVL in excellent yields (26–48 mol%).

Graphical abstract: Direct biomass valorisation to γ-valerolactone by Ru-PNP catalysed hydrogenation in acid

Supplementary files

Article information

Article type
Paper
Submitted
06 Oct 2023
Accepted
10 Jan 2024
First published
11 Jan 2024
This article is Open Access
Creative Commons BY-NC license

EES. Catal., 2024,2, 803-810

Direct biomass valorisation to γ-valerolactone by Ru-PNP catalysed hydrogenation in acid

S. Koranchalil and M. Nielsen, EES. Catal., 2024, 2, 803 DOI: 10.1039/D3EY00247K

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