Interfacial W–O–Zr ensembles in tungstated zirconia enable hydrogen-free recycling of polypropylene waste

Polyolefins are essential plastics in modern life, yet they create growing sustainability challenges. Chemical recycling technologies are promising solutions, but they often require harsh conditions, costly hydrogen, noble metals, or complex catalyst designs. We report the hydrogen- and solvent-free depolymerization of polypropylene consumer goods at 240 °C, achieving >80% yield of gasoline-range hydrocarbons with stable performance. This database contains all XAS data collected for the WZrOₓ-catalyzed hydrogen-free recycling of polypropylene waste.