Journal of Polymers and the Environment

, Volume 26, Issue 5, pp 1920–1929 | Cite as

Thermocatalytic Degradation of High Density Polyethylene into Liquid Product

  • Lekhank Patil
  • Anil Kumar Varma
  • Gajendra Singh
  • Prasenjit Mondal
Original Paper


Thermocatalytic degradation of high density polyethylene (HDPE) was carried out using acid activated fire clay catalyst in a semi batch reactor. Thermal pyrolysis was performed in the temperature range of 420–500 °C. The liquid and gaseous yields were increased with increase in temperature. The liquid yield was obtained 30.1 wt% with thermal pyrolysis at temperature of 450 °C, which increased to 41.4 wt% with catalytic pyrolysis using acid activated fire clay catalyst at 10 wt% of catalyst loading. The composition of liquid products obtained by thermal and catalytic pyrolysis was analyzed by gas chromatography-mass spectrometry and compounds identified for catalytic pyrolysis were mainly paraffins and olefins with carbon number range of C6–C18. The boiling point was found in the range of commercial fuels (gasoline, diesel) and the calorific value was calculated to be 42 MJ/kg.


High density polyethylene Fire clay Catalyst Pyrolysis 


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Lekhank Patil
    • 1
  • Anil Kumar Varma
    • 1
  • Gajendra Singh
    • 1
  • Prasenjit Mondal
    • 1
  1. 1.Department of Chemical EngineeringIndian Institute of Technology RoorkeeRoorkeeIndia

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