At this GeCatS Infoday, different aspects of catalytic process in the context of the closure of materials and product loops will be discussed. Catalysts are required for the targeted breaking down of chemical structures, be it from biomass or recycled materials. But they are also needed to build new molecules from resources such as CO2 or monomers. Thus, a circular economy depends on the development and application of a large variety of catalytic processes that will be presented at this event.