The one-step ethanolysis approach to upgrade lignin to monomeric aromatics using a CuMgAl mixed oxide catalyst is studied in detail. The influence of reaction temperature (200-420 °C) on the product distribution is investigated. At low temperature (200-250 °C), recondensation is dominant, while char-forming reactions become significant at high reaction temperature (>380 °C). At preferred interm...

Lignin is a type of natural aromatic material with potential application prospects obtained from lignocellulosic biomass. Recently, the valorization lignin has received increasing attention both industry and academia. However, there still challenge in efficient due to complexity stability structure. Recent work been focused on catalytic depolymerization explore promising way valorize into chemi...

In this work, we investigated the fractionation of raw biomass based on a “lignin-first” biorefinery strategy that enables corn stover into stable lignin oil and cellulose-rich pulp. Lignin fraction was completely disassembled monomers with yield 25.1 wt% in methanol H2WO4 catalyst at 200 °C for 6 h. Higher temperature (?220 °C) longer reaction time (?6 h) were favor higher delignification hemi...

The plasticity of lignin biosynthesis should permit the inclusion of new compatible phenolic monomers, such as rosmarinic acid (RA) and analogous catechol derivatives, into cell-wall lignins that are consequently less recalcitrant to biomass processing. In vitro lignin polymerization experiments revealed that RA readily underwent peroxidase-catalyzed copolymerization with monolignols and lignin...

Supported gold and platinum particles on titanium oxide catalysts were evaluated in the oxidative depolymerization of lignins toward high added value aromatics under mild conditions (T: 150 °C, Pair: 20 bar, CNaOH: 10 g/L, 1 h). Kraft ethanol Organosolv engaged study. Gold catalyst showed a strong tendency to further oxidize produced from lignin volatile compounds leading very low yield target ...