Reaction control in radical-transforming catalytic degradation of polypropylene

Keio Kato*, Tomohiro Kamimura, Yasushi Sekine, Kaoru Fujimoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


For the purpose of chemical recycling of plastic wastes, catalytic degradation and liquefaction of Polypropylene (PP). subjected to high pressure H2 was examined with a batch reactor. Iron supported active carbon (Fe/A.C.) acted to decrease solids and also increase liquid yield in condition of 673-693 K at H2 pressure of 4.0 MPa (NTP) for 1 h. Compared with thermal degradation, liquid products became lighter because residue produced was degradated by the catalyst. Compared H2 with Ar as reaction gas at 683 K, degradation of PP was promoted by H2 in 0.5-1.0 h. In the results of the effect of H2 pressure, degradation of PP was proceeded as the increase of H2 under 3.0 MPa but was suppressed over 4.0 MPa. These results show that H2 plays an important role in catalytic degradation of PP over Fe/A.C. catalyst.

Original languageEnglish
Pages (from-to)222-227
Number of pages6
JournalSekiyu Gakkaishi (Journal of the Japan Petroleum Institute)
Issue number4
Publication statusPublished - 1999 Jul
Externally publishedYes


  • Active carbon support
  • Catalytic degradation
  • High pressure hydrogen
  • Iron catalyst
  • Liquefaction
  • Polypropylene

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology


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