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Enhancement of light hydrocarbon production from polypropylene waste by HZSM-11-catalyzed pyrolysis

Author

Listed:
  • Heesue Lee
  • Sam Yeol Lim
  • Shuting Fu
  • Yong Tae Kim
  • Jechan Lee

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.

Suggested Citation

  • Heesue Lee & Sam Yeol Lim & Shuting Fu & Yong Tae Kim & Jechan Lee, 2026. "Enhancement of light hydrocarbon production from polypropylene waste by HZSM-11-catalyzed pyrolysis," Energy & Environment, , vol. 37(2), pages 758-771, March.
    • Handle: RePEc:sae:engenv:v:37:y:2026:i:2:p:758-771
    DOI: 10.1177/0958305X241251423
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    References listed on IDEAS

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    1. Duan, Dengle & Zhang, Yayun & Wang, Yunpu & Lei, Hanwu & Wang, Qin & Ruan, Roger, 2020. "Production of renewable jet fuel and gasoline range hydrocarbons from catalytic pyrolysis of soapstock over corn cob-derived activated carbons," Energy, Elsevier, vol. 209(C).
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