Polypropylene cracking on embryonic and ZSM-5 catalysts – An operando study
Karolina A. Tarach, Mariame Akouche, Kamila Pyra, Valentin Valtchev, Gabriela Jajko, Jean‐Pierre Gilson, Kinga Góra‐Marek
Abstract
A series of ZSM-5 zeolites (embryonic, microporous, hierarchical) is studied in the catalytic cracking of polypropylene in the framework of its chemical recycling. Two important zeolite features impact their catalytic performances and allow their design as efficient catalysts: porosity and acidity. They also play a key role in catalyst deactivation and regeneration. A detailed thermogravimetric and spectroscopic (operando FT-IR) analysis of the reaction, including catalyst coking and regeneration, shows the emergence of rules to design fit-for-purpose catalysts to be used in existing or grass-roots FCC units.
Topics & Concepts
CatalysisMicroporous materialCrackingThermogravimetric analysisZeoliteFluid catalytic crackingZSM-5PolypropyleneChemical engineeringMaterials sciencePorosityChemistryOrganic chemistryComposite materialEngineeringZeolite Catalysis and SynthesisCatalysis for Biomass ConversionCatalysis and Hydrodesulfurization Studies