(638a) Ru/C Property Insights for Polypropylene Waste Hydrogenolysis
AIChE Annual Meeting
2023
2023 AIChE Annual Meeting
Catalysis and Reaction Engineering Division
Catalytic Upcycling of Waste Plastics II: Hydro-conversion
Monday, November 6, 2023 - 12:30pm to 12:48pm
One of the objectives is to correlate particle size, structure, and metal support interactions (MSI) with product selectivity in polypropylene (PP) hydrogenolysis. Previous work in the field has shown that Ruâs performance is dependent on particle size with high activity for ultra-small clusters. MSI in reducible supports also play a key role in stabilizing small Ru clusters and creating active Ruδ+ species but details regarding their impact remain unclear. Our work focuses on investigating Ru particle size effect on an inert carbon support utilizing various characterization methods including HRTEM, H2-TPR/TPD, XPS, NMR and GPC. Using an activated carbon support and systematic variation of Ru particle size (by changing Ru loadings and different pretreatment protocols), we reveal basic site requirements for PP hydrogenolysis and demonstrate the influence of small Ru nanoclusters on product selectivity.