Oxidative Depolymerization of Lignin Using a Novel Polyoxometalate-Protic Ionic Liquid System

Title: Oxidative Depolymerization of Lignin Using a Novel Polyoxometalate-Protic Ionic Liquid System
Authors: De Gregorio, GF
Prado, R
Vriamont, C
Erdocia, X
Labidi, J
Hallett, JP
Welton, T
Item Type: Journal Article
Abstract: Oxidative depolymerization of lignin obtained from pine and willow can be achieved in a novel system encompassing the ionic liquid (IL) 1-butylimidazolium hydrogensulfate coupled with a vanadium based polyoxometalate (POM) under oxygen rich conditions. Along with an array of phenols and functionalized aromatics, vanillin and syringaldehyde were the main products extracted from the IL. The overall yield of aldehyde products were shown to be higher on lignin samples obtained with shorter pretreatment times, with vanillin being the exclusive aldehyde product obtained from pine. In the presence of molecular oxygen, the highest yield of aldehyde products was obtained when 5 wt % of the POM relative to the IL was employed and constituted the major product in the extracted oils. This system succeeds in exploiting the ability of ILs to depolymerize lignin and the remarkable properties of the POM to oxidize the lignin fragments into useful platform chemicals.
Issue Date: 21-Aug-2016
Date of Acceptance: 1-Aug-2016
URI: http://hdl.handle.net/10044/1/49675
DOI: https://dx.doi.org/10.1021/acssuschemeng.6b01339
ISSN: 2168-0485
Publisher: American Chemical Society
Start Page: 6031
End Page: 6036
Journal / Book Title: ACS Sustainable Chemistry and Engineering
Volume: 4
Issue: 11
Copyright Statement: © 2016 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry and Engineering, after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acssuschemeng.6b01339
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K014676/1
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Engineering, Chemical
Chemistry
Science & Technology - Other Topics
Engineering
Vanillin
POM
Ionic liquids
Catalysis
Lignin valorization
Oxidation
Depolymerization
Platform chemicals
Lignocellulosic biomass
LIGNOCELLULOSIC BIOMASS
RENEWABLE CHEMICALS
PRETREATMENT
DISSOLUTION
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemistry
Catalysis and Advanced Materials
Chemical Engineering
Faculty of Natural Sciences



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commonsx