Walter Eevers

Walter Eevers

Walter Eevers Flemish Institute for technological research, Belgium

Title: Lignin valorization by making aromatic chemicals and materials


Walter Eevers acts as director R&D for the Flemish Institute for technological research (VITO) and as visiting professor Polymer chemistry at Antwerp University. After obtaining his PhD and MBA  he worked for 20 years as director R&D and Innovation at Nitto.  Already during his private career he started a research group in biobased polymer developments for industrial and medical applications. He has over 30 publications and patents on innovations in polymer and materials developments. Furthermore he has been involved in several spin off companies in innovative technologies derived from VITO’s research activities. Recently he has set up a new research group dedicated to incorporation of lignin based monomers and oligomers for materials developments replacing fossil based aromatic building blocks; furthermore he has been one of the founding father of the CO2 Value Europe association that endeavors the full acceptance of the utilization of CO2 a valuable building block for innovative chemistry.



Statement of the Problem: BTX (benzene, toluene, Xylene) represent a massive 120B$ and 14.2Mtons market of numerous chemicals and products used worldwide. The fight against climate change has convinced many brand-owners to push for more renewables to be incorporated in their product ranges. Furthermore the strong growth of shale gas as energy and feedstock source has demonstrated that the traditional C3 feedstock for aromatics is reduced at the origin. The need for alternative sources for this multiple of products is driven as well by supply as demand. The purpose of this study is to describe the potential of lignin as feedstock for novel polymers and foams. Methodology & Theoretical Orientation: Starting from the insight in potential lignin sources, the variations in de-polymerization technologies available, a set of functionalized monomers and oligomers is prepared as starting point for the polymerization process. Additional introduction of epoxide groups or the introduction of lignin as a polyol in the urethane approach lead to new structures. The presence of residual functional groups on the lignin segments contribute to variations in the physical mechanical properties of the polymers. Simultaneously with the technical evaluation of the potential innovative materials for different applications an economic analysis of these material developments is integrated in the study in order to safeguard the potential introduction of the innovative technologies in existing applications of aromatic polymers.  Conclusion & Significance: The widespread availability of lignin in many different places in the world is creating great opportunity to simultaneously develop new materials without dependency on oil as a feedstock but also as a contribution to fighting climate change. Simultaneously a complete new value chain is being developed creating great new business opportunities for new actors in the world.




Fig: Development strategies for demand driven innovation with lignin based feedstock towards innovative materials