Chevron Phillips Chemical Company LP

Sikander Hakim

Mark L Hlavinka

Joseph Bergmeister, Iii

Cori A Demmelmaier-Chang

Gabriela Alvez

Steven Lim

Depolymerization processes and systems for converting polyolefin waste and other waste plastic to hydrocarbons, specifically liquid and gaseous depolymerization reaction products. A depolymerization or catalytic pyrolysis process can be conducted on a process feed which includes a polyolefin waste and a hydrocarbon co-feed under depolymerization conditions, including contacting the reactor feed with a depolymerization catalyst such as a zeolite-based catalyst. The resulting reactor effluent subsequently can be used as feeds or co-feeds for making circular products such as circular ethylene and circular polyethylene.

Catalyzed depolymerization of a chemically complex feedstock

Methods for producing supported catalysts containing a transition metal and a bound zeolite base are disclosed. These methods employ a step of impregnating the bound zeolite base with a transition metal precursor in a solvent composition containing water and from about 5 wt. % to about 50 wt. % of a Cto Calcohol compound, a chlorine precursor, and a fluorine precursor. The resultant supported catalysts have improved catalyst activity and selectivity, as well as lower fouling rates in aromatization reactions.

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Kingwood, TX, United States of America

Sikander Hakim