Hydrogenolysis of lignins: influence of the pretreatment using microwave and ultrasound irradiations.


Hydrolytic eucalyptus lignin was converted to oils by hydrogenolysis. The lignin was obtained by acid hydrolysis of eucalyptus chips from two semi-industrial sources in Brazil: FTI and Coalbra. Hydrogenolysis was performed in an 1-L reactor using lignin/water ratio 1/4 (w/v), pH 9 (adjusted with NaOH), 0.1 g sodium formate/g lignin, 20 MPa (argon pressure… (More)