articleJournal of the American Chemical SocietyMar 30, 2022HYBRID OA

Chemical Recycling of Polystyrene to Valuable Chemicals via Selective Acid-Catalyzed Aerobic Oxidation under Visible Light

ZHZhiliang HuangMSMuralidharan ShanmugamZLZhao LiuABAdam BrookfieldELElliot L. Bennett

University of Liverpool · University of Manchester · +1 more institution

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Abstract

Chemical recycling is one of the most promising technologies that could contribute to circular economy targets by providing solutions to plastic waste; however, it is still at an early stage of development. In this work, we describe the first light-driven, acid-catalyzed protocol for chemical recycling of polystyrene waste to valuable chemicals under 1 bar of O2. Requiring no photosensitizers and only mild reaction conditions, the protocol is operationally simple and has also been demonstrated in a flow system. Electron paramagnetic resonance (EPR) investigations and density functional theory (DFT) calculations indicate that singlet oxygen is involved as the reactive oxygen species in this degradation process,…

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342
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100%
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Authors

12

Topics & keywords

Topics
Keywords
  • Chemistry
  • Singlet oxygen
  • Polystyrene
  • Photochemistry
  • Catalysis
  • Electron paramagnetic resonance
  • Singlet state
  • Photosensitizer
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