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Description

Polypropylene (PP) is one of the major plastic waste contributors produced globally for its wide range of applications, high chemical resistance and mechanical strength. In this study, cobalt (Co) and zinc (Zn) impregnated H-mordenite (HM) zeolite-supported catalysts were used for pyrolysis of polypropylene to produce lighter hydrocarbons and hydrogen. This study explores the catalytic pyrolysis of PP over Co- and Zn-impregnated Hmordenite (HM) zeolite catalysts to produce valuable light hydrocarbons and hydrogen. The catalysts were characterized by N₂ adsorptiondesorption, NH₃-TPD, H₂-TPR, XRD, XPS, and TGA to investigate their structural and chemical characteristics. Pyrolysis experiments were conducted at various temperatures (up to 450°C) and catalyst-polymer weight ratios (2:1 and 1:1), and gas products were characterized by GCMS. Results showed that Co-HM exhibited >90% PP conversion and 65% selectivity towards light olefins at 450°C, qualifying it for petrochemical application. Zn-HM achieved 90.51% conversion with >35% paraffin selectivity, leaning towards fuel production. The findings confirm that catalyst design is significant in hydrocarbon selectivity, offering a sustainable pathway for plastic waste valorization and complementing clean energy and circular economy initiatives.

Publication Date

4-1-2025

Keywords

Plastics Upcycling, Polypropylene, Co- & Zn- H - Mordenite, Clean Energy, Sustainable Future

Advances in Plastics Upcycling: Catalytic Pyrolysis of Polypropylene Using Co- and Zn- Impregnated H - Mordernite to yield Value Added Chemicals

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