In this section
@article{Wesinger:2025:10.1002/bbb.2794,
author = {Wesinger, S and Rabiner, A and Meyer, N and Voß, D and BrandtTalbot, A and Hallett, J and Albert, J},
doi = {10.1002/bbb.2794},
journal = {Biofuels, Bioproducts and Biorefining},
pages = {1862--1874},
title = {Sequential fractionation and polyoxometalatecatalyzed oxidation of lignocellulosic biomass improves cellulose purity and formic acid yield},
url = {http://dx.doi.org/10.1002/bbb.2794},
volume = {19},
year = {2025}
}
TY - JOUR
AB - Lignocellulosic biomass is an important source of renewable chemicals and materials but its full valorization is necessary in order to achieve economic and sustainability goals. This study proposes a two-step approach for the valorization of lignocellulosic biomass combining solvent-assisted fractionation and catalytic oxidation with molecular oxygen to generate cellulose and formic acid. An industrially relevant lignocellulosic substrate, beech wood, was fractionated under a nitrogen atmosphere using either an organosolv (methanol or ethanol) or ionosolv (ionic liquid) aqueous solvent to produce dissolved hemicellulose and lignin as well as a cellulose-rich solid. The dissolved components were oxidized catalytically to formic acid and its derivatives in a second step using the fivefold vanadium substituted Keggin-type polyoxometalate H8[PV5Mo7O40]. Enzymatic hydrolysis of the cellulose-enriched solid generated purified glucose higher in yields than the single-step comparison method. The organosolv-fractionation increased enzymatic saccharification to 78% whereas the ionosolv-fractionation increased the saccharification yield to 68%, in comparison with 18% for the one-step conversion and only 8% for the untreated beech wood. In the oxidation step, a 28% formic acid yield was achieved under 125 °C, 1200 rpm, 30 bar oxygen, and 6.5 h reaction conditions. The improvements observed for the two-step approach are attributed to the influence of the solvent on the catalyst preventing the latter from interacting with the cellulose-enriched solid, which improved the quality of the pulp and increased the overall formic acid yield.
AU - Wesinger,S
AU - Rabiner,A
AU - Meyer,N
AU - Voß,D
AU - BrandtTalbot,A
AU - Hallett,J
AU - Albert,J
DO - 10.1002/bbb.2794
EP - 1874
PY - 2025///
SN - 1932-104X
SP - 1862
TI - Sequential fractionation and polyoxometalatecatalyzed oxidation of lignocellulosic biomass improves cellulose purity and formic acid yield
T2 - Biofuels, Bioproducts and Biorefining
UR - http://dx.doi.org/10.1002/bbb.2794
UR - https://doi.org/10.1002/bbb.2794
VL - 19
ER -