Exploring the Complex Mixture of Phenolic Chemicals from Lignin Biorefining

PhD defense, Friday 13 April 2018, Mads Mørk Jensen.

2018.04.13 | Trine Berndt Turtiainen Scheelke

Mads Mørk Jensen

Image showing a flask containing the oil-like extract of the product from hydrothermal liquefaction of lignin.

During his PhD studies, Mads Mørk Jensen has investigated hydrothermal liquefaction of lignin to produce sustainable chemicals. Lignin is a phenolic polymer in plants, and lignin can thus be a renewable source of phenolic chemicals. Hydrothermal liquefaction utilizes unique reaction conditions of superheated water for conversion of biomass. The aqueous product is a complex mixture of monomer and polymer compounds that can be used for further processing into chemicals and new materials, e.g. carbon fibers and adhesives. However, optimizing hydrothermal liquefaction is hindered by unresolved reaction pathways and limited characterization of the lignin raw material and products. Mads Mørk Jensen studied the chemical structures of the product from hydrothermal liquefaction of lignin using detailed chemical analysis. He quantified over 100 monomer products and investigated the structures of polymer products. These analyses can be used to assess the potential value and applicability of the product from hydrothermal liquefaction of lignin. In the future, hydrothermal liquefaction of lignin could be part of new types of biorefineries.

The PhD degree was completed at the Department of Chemistry, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 13 April 2018 at 13.00
Location: Building 1514, room 213, Auditorium I, Department of Chemistry, Langelandsgade 140, Aarhus University, 8000 Aarhus C
Title of PhD thesis: Characterization of lignin and products from conversion of lignocellulose by hydrothermal liquefaction and other biorefinery technologies

Contact information: Mads Mørk Jensen, e-mail: madsmj@chem.au.dk
Members of the assessment committee:
Professor Alena Kubátová, Department of Chemistry, University of North Dakota, USA.
Associate Professor Andrew Ross, School of Chemical and Process Engineering, University of Leeds, UK.
Associate Professor Steen Uttrup Pedersen (chair), Department of Chemistry, Aarhus University.
Main supervisor:
Associate Professor Marianne Glasius, iNANO and Department of Chemistry, Aarhus University
Professor Bo Brummerstedt Iversen, iNANO and Department of Chemistry, Aarhus University
Language: The PhD thesis will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST,
Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 16.04.2018