Lignin is a renewable raw material (component of wood, about 30 % by weight of dry mass), which is a biopolymer composed of highly functionalized, phenolic macromolecules. This biogenic raw material is produced in large quantities in the wood and pulp processing industry as a by-product or residue and is still only used to a limited extent as a material. In the interests of a resource-efficient circular economy and the best possible value creation, ElektrALig aims to demonstrate an innovative way in which the regenerative carbon source lignin can be used on an industrial scale as a chemical base material for the production of polymer building blocks. In a two-stage production process, the aromatic polymer building blocks contained in the lignin are to be chemically broken down, converted into defined target structures via a convergent electrochemical reaction and thus made accessible for applications in the production of polymer resins. The cooperation between the industrial partners Mercer Rosenthal, Borregaard, Covestro and Heraeus and the Ruhr University Bochum with the CSC chair and the Apfel working group as the executing bodies combines unique expertise in the field of starting materials, chemical process engineering, electrochemical reaction technology and polymer applications. In this way, an efficient strategy for the material utilization of lignin can be implemented, which ranges from a basic chemical understanding of the structure of technically available lignin, through concrete sub-steps to a sophisticated process engineering concept for the electricity-based conversion of the biogenic raw material lignin.
Project duration: 01.05.2023 - 30.04.2026
Funding code: 2221NR098X
Funding: Fachagentur Nachwachsende Rohstoffe e. V. (im Auftrag des BMEL)
Contact:
Prof. Dr. Thomas Ernst Müller
PD Dr. rer. nat. Berthold Fischer