Effective Methane Suppression in Upcycling of Polyethylene into Fuels via Alloying Platinum with Ruthenium Supported on ZSM-5 Zeolite

species and the synergistic catalytic effect induced by Pt doping. Through density functional theory calculations, the nature of methane inhibition was uncovered and the reaction pathway was proposed. Furthermore, the Pt-Ru/H-ZSM-5 catalyst demonstrated its stability and reusability, as well as its efficacy for upcycling various PEs. This work reveals the mechanism of Ru-based catalysts in PE upcycling reactions, promoting plastic recycling development.