Characterization of Styrene Recovery from the Pyrolysis of Waste Expandable Polystyrene

Jong Jin Park, Kwinam Park, Ji Soo Kim, Sanjeev Maken, Hocheol Song, Hochul Shin, Jin Won Park, Myung Jae Choi

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Catalytic and thermal degradation of waste expandable polystyrene (WEPS) have been studied in a semi-batch reactor with continuous flow of nitrogen to achieve greater oil yield and maximize styrene monomer recovery. Effect of temperature, nature of catalyst and its size, reaction time of catalytic pyrolysis, and effect of repyrolysis have been also investigated. Higher reaction temperature favors the oil yield and also decreases the reaction time with maximum styrene selectivity (76.31 wt %) at 450 °C. Among the catalysts studied, solid base BaO is found to be the most efficient and increases the styrene selectivity (84.29 wt %) significantly at a reaction temperature of 350 °C in comparison to thermal and acid catalytic degradation. Modified catalyst Fe-A/Al (A = basic material) also shows better activity than Fe2O3 or Fe/Al. Increase in the size of the catalyst and repyrolysis decrease the oil yield, and styrene production also decreases on repyrolysis.

Original languageEnglish
Pages (from-to)1576-1582
Number of pages7
JournalEnergy and Fuels
Issue number6
Publication statusPublished - 2003 Nov

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology


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