 Enhancement of light hydrocarbon production from polypropylene waste by HZSM-11-catalyzed pyrolysisHeesue Lee, Sam Yeol Lim, Shuting Fu, Yong Tae Kim and Jechan Lee Energy & Environment, 2026, vol. 37, issue 2, 758-771 Abstract: Herein, a mixture of real polypropylene (PP) waste was pyrolyzed with a HZSM-11 catalyst as a potential method to recover light hydrocarbons (C  ≤ 12 ), the potential feedstock for value-added chemicals and fuels, from polyolefin plastic waste. Using the HZSM-11 in the PP waste mixture pyrolysis noticeably improved the yield of gas pyrolysate and oil in compensation for the yield of wax (i.e. hydrocarbons of C  > 20 ) and solid residue particularly at a higher temperature. In addition, the selectivity of C 3 –C 12 in the PP-waste mixture-derived pyrolysate was markedly increased by the HZSM-11. The highest yield of light hydrocarbons was ≈40 wt% (per mass of the feedstock) achieved at 700 °C with the HZSM-11 catalyst. Despite 7.9 wt% coke deposition on the HZSM-11 after its use in the pyrolysis of the PP waste mixture, the catalyst could be reusable for at least three times after regeneration. The experimental results demonstrate that HZSM-11 has the potential for being a promising catalyst to valorize polyolefin waste into value-added chemicals. Keywords: Plastic waste; waste treatment; wax reduction; gasoline; jet fuel; zeolite (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:sae:engenv:v:37:y:2026:i:2:p:758-771 DOI: 10.1177/0958305X241251423 Access Statistics for this article More articles in Energy & Environment |
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