This PDF file includes:

• Supplementary Materials and Methods
  
• fig. S1. GC traces for the reactions of HDPE-1 with Ir complex 1 or 2, and the control experiments without HDPE-1.
  
• fig. S2. GC trace for the reaction of 1-octene with recycled Re₂O₇/Al₂O₃ in toluene after 12 hours at 175°C.
  
• fig. S3. GC traces for the control experiments in the absence of one of the dual catalysts or in the absence of both catalysts.
  
• fig. S4. GPC traces for the wax products.
  
• fig. S5. GC traces for the oil products from the degradation of the PE plastic bottle, film, and bag.
  
• fig. S6. GPC traces for the wax products obtained from the reaction with HDPE-2 after 2, 4, 6, 8, 24, 48, and 96 hours.
  
• table S1. Degradation of various grades of PE with n-octane (2.5 or 4.0 ml) by Ir (4.2 μmol) and Re₂O₇/Al₂O₃ (57 μmol Re₂O₇): The distribution of n-alkane products and conversion of PE to oil products after 4 days at 175°C.
  
• table S2. Degradation of HDPE-2 at different time intervals: The distribution of n-alkane products and conversion of PE to oil products.
  
• References (35–38)

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