Lignin partial depolymerization by reduction (PDR) was developed as a strategy to tailor technical lignin’s molar mass and reduce its heterogeneity potentially increase the reactivity of lignin hydroxyl groups in polymer applications such PU foams coatings. The process aims cleave remaining β-O-4 linkages, thereby reducing large fragments overall dispersity. Acetone organosolv from pilot-scale ...

Novel biorefineries could transform lignin, an abundant biopolymer, from side-stream waste to high-value-added byproducts at their site of production and with minimal experiments. Here, we report the optimization AquaSolv omni biorefinery for lignin using Bayesian optimization, a machine learning framework sample-efficient guided data collection. This tool allows us relate conditions like hydro...

A multifunctional Ru/SBA-15 catalyst is prepared via impregnation and used in the depolymerization of crude waste corn stover enzymatic lignin (CSEL) to produce monophenols and, unexpectedly, industrially important organic siloxanes. In CSEL over Ru/SBA-15, a high phenolic monomer yield 13.91 wt% with selectivity ethylphenols (≈61%) can be achieved. Unexpectedly, when reaction carried out ethan...

Kraft lignin was treated with subcritical water at moderate temperatures (120–220 °C) in different gas atmospheres, the goal of optimizing its depolymerization under mild conditions. Lignin observed and compared using homogeneous heterogeneous catalysts both nitrogen carbon dioxide atmospheres. The most important treatment parameters for maximum highest yields phenolic other aromatic monomers w...

The use of lignocellulosic biomass to obtain biofuels and chemicals produces a large amount lignin as byproduct. Lignin valorization into needs efficient conversion processes be developed. In this work, hydrocracking organosolv was performed by using nickel Raney catalyst. Organosolv obtained from the pretreatment eucalyptus wood at 170 °C for 1 h 1/100/100 (w/v/v) ratio biomass/oxalic acid sol...

Background Global warming, environmental disasters, and increasing oil prices have catalyzed a worldwide trend to use plant biomass as a renewable source for liquid biofuels and bio-based materials. Plant biomass can be processed into fermentable sugars by enzymatic depolymerization of the cell wall polysaccharides, followed by fermentation. However, the presence of lignin in the cell wall cons...

Background The recalcitrance of lignocellulosic biomass offers a series of challenges for biochemical processing into biofuels and bio-products. For the first time, we address these challenges with a biomimetic system via a mild yet rapid Fenton reaction and lignocellulose-degrading bacterial strain Cupriavidus basilensis B-8 (here after B-8) to pretreat the rice straw (RS) by mimicking the nat...

Efficient depolymerization of C–O linkages is essential for converting lignin into fuels and higher value-added chemicals. In this work, CoRuP/SiO2, an amorphous Ru-Co phosphide composite, was fabricated the efficient hydrogenolysis ether linkages. The 4–O–5 α–O–4 containing lignin-related compounds, such as diphenyl ether, benzyl phenyl 3-methyl dibenzyl are selected representatives in lignin....