Feedstock-agnostic reductive catalytic fractionation in alcohol and alcohol-water mixtures

Many biomass conversion technologies focus primarily on tailor-made processing conditions for a single feedstock, in contrast to developing a practical operational window for effective processing of a broad variety of lignocellulosic biomass substrates available year-round. Here, we demonstrate the...

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Published in:Green chemistry : an international journal and green chemistry resource : GC 2023-05, Vol.25 (9), p.366-367
Main Authors: Jang, Jun Hee, Morais, Ana Rita C, Browning, Megan, Brandner, David G, Kenny, Jacob K, Stanley, Lisa M, Happs, Renee M, Kovvali, Anjaneya S, Cutler, Joshua I, Román-Leshkov, Yuriy, Bielenberg, James R, Beckham, Gregg T
Format: Article
Language:English
Subjects:
Alcohol
Biomass
Carbohydrates
Catalytic converters
Fractionation
Green chemistry
Hardwoods
Lignin
Lignocellulose
Macromolecules
Methanol
Mixtures
Poplar
Raw materials
Softwoods
Solvents
Substrates
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Summary:Many biomass conversion technologies focus primarily on tailor-made processing conditions for a single feedstock, in contrast to developing a practical operational window for effective processing of a broad variety of lignocellulosic biomass substrates available year-round. Here, we demonstrate the feedstock flexibility of reductive catalytic fractionation (RCF), performed in both batch and flow-through (FT) modes, to effectively process a range of biomass types (hardwoods, softwoods, and herbaceous monocots), regardless of their macromolecular composition and morphological structure differences. Both batch and FT-RCF performed with pure methanol as a solvent allow delignification (or lignin oil yield) values and lignin monomer yields greater than 65 wt% and 25 wt%, respectively, and high retention of carbohydrates (>90%) from herbaceous monocots (corn stover and switchgrass) and hardwood (poplar) biomass substrates, despite the inherent differences between woody and herbaceous biomass feedstocks. FT-RCF of pine (softwood) exhibited lower lignin extraction efficiency (
ISSN:1463-9262
1463-9270
DOI:10.1039/d2gc04464a