Skip to main content

Research Repository

Advanced Search

Valorisation of lignin by depolymerisation and fractionation using supercritical fluids and conventional solvents

Perez, Eduardo; Tuck, Christopher O.; Poliakoff, Martyn

Authors

Eduardo Perez eperezve@hotmail.com

Christopher O. Tuck christuck123@icloud.com



Abstract

A procedure for Lignosulphonate valorisation is investigated. An attempt has been made to obtain diverse value-added products maximizing the atom economy. This procedure is carried in sequential steps starting with an oxidative depolymerization in supercritical water. Next, the reaction mixture is fractionated according to its solubility in water and in ethyl acetate. Several analytical methods - CHN elemental analysis, aqueous GPC and 31P-NMR - were used to determine the composition of these fractions and to assess their suitability for different applications. Water-insoluble fractions were converted to a lignin-derived hydrochar for the synthesis of active carbon of superior quality. Monomers were recovered from bio-oil fraction by supercritical carbon dioxide extraction and the remaining oil is proposed as a potential starting material for the synthesis of polyurethane foams.

Citation

Perez, E., Tuck, C. O., & Poliakoff, M. (in press). Valorisation of lignin by depolymerisation and fractionation using supercritical fluids and conventional solvents. Journal of Supercritical Fluids, https://doi.org/10.1016/j.supflu.2017.07.033

Journal Article Type Article
Acceptance Date Jul 28, 2017
Online Publication Date Aug 9, 2017
Deposit Date Nov 9, 2017
Publicly Available Date Aug 10, 2018
Journal Journal of Supercritical Fluids
Print ISSN 0896-8446
Electronic ISSN 1872-8162
Publisher Elsevier
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1016/j.supflu.2017.07.033
Keywords lignin valorization, fractionation, supercritical water oxidation, supercritical extraction
Public URL http://eprints.nottingham.ac.uk/id/eprint/48002
Publisher URL http://dx.doi.org/10.1016/j.supflu.2017.07.033
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

Files

Lignin fractionation manuscript.pdf (809 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





You might also like



Downloadable Citations