Year-end Sale % OFF 
Abstract
Asian lignin was directly depolymerized to phenol-rich oil fraction (lignin-oil) over Pt/C, Pd/C, Ru/C, and Ni/C under supercritical alcohols. Ethanol and Pt/C (E-Pt) proved to be an excellent combination for producing large amounts of lignin-oil (77.4 wt %) with the smallest amount of char (3.7 wt %). Lignin-oil mainly consisting of monomeric phenols, and higher molecular phenolic was subjected to several chemical analyses. Elemental analysis indicated that hydrodeoxygenation and hydrogenation primarily occur during lignin depolymerization. 1H-/2D-HSQC-NMR and GPC analysis revealed that the Mw of lignin-oil remarkably is lower than that of Asian lignin, which is clear evidence of β-O-4 and β–β bond cleavages. The top four main monomeric phenols in lignin-oil were 4-ethylphenol, guaiacol, 4-ethylguaiacol, and syringol, for which the sum was mostly produced in E-Pt (41.8 mg/g of lignin) with the highest selectivity (38.3%). With increasing catalyst dosage, we observed that excessive catalyst caused side re...
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
