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April 15, 2026Catalysis Science & Technology1 citations

Steering C–C Bond Cleavage and Hydrogenation in Polystyrene Hydrocracking through External Brønsted Acid Sites over Ni/Zeolites

JPJonghyun ParkKorea UniversityTKTaeeun KwonKorea UniversityKKKi Hyuk KangKorea Research Institute of Chemical Technology

Key Points

  • To investigate the role of Brønsted acid sites in enhancing selective hydrocracking of polystyrene.
  • Analyzed the effects of aromatic substituents on degradation pathways.
  • Utilized Ni/zeolite catalysts during hydrocracking processes.
  • Measured recycling rates for polystyrene compared to polyolefins.
  • Examined the stability of benzylic species in polystyrene hydrocracking.
  • Found that Brønsted acid sites significantly influence bond cleavage and hydrogenation.
  • Observed altered degradation pathways due to the presence of aromatic substituents.
  • Indicated that recycling rates for polystyrene remain lower than for polyolefins.

Abstract

Unlike polyolefin hydrocracking, aromatic substituents in polystyrene (PS) stabilize benzylic species and redirect degradation pathways, making selective catalytic upcycling more difficult. Consistent with this challenge, recycling rates for polyolefins reach...

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Cite This Study

Park et al. (2026) studied this question.

synapsesocial.com/papers/69df2bcae4eeef8a2a6b0b5bhttps://doi.org/10.1039/d6cy00204h
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