Depolymerization and Hydrogenation of Organosolv Eucalyptus Lignin by Using Nickel Raney Catalyst

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 solution (0.4% w/w)/1-butanol. resulting organic phase in 1-butanol used hydrogenation tests. carried out with batch reactor equipped 0.3 L vessel adjustable internal stirrer heat control. pressurized 5 bar hydrogen room temperature, then temperature raised 250 kept 30 min. Operative conditions were optimized achieve high monomers minimize loss solvent. At best performance conditions, about 10 wt % solubilized monomeric phenols. need find trade-off between solvent side reaction highlighted.