Pyrolysis of waste polypropylene and characterisation of tar

Purevsuren B., Davaajav Y., KARACA F. , Morgan T., George A., Herod A., ...Daha Fazla

EUROPEAN JOURNAL OF MASS SPECTROMETRY, cilt.15, sa.1, ss.23-33, 2009 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Konu: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1255/ejms.975
  • Sayfa Sayıları: ss.23-33


Waste polypropylene (PP) has been pyrolysed to obtain mainly a liquid tar product of high yield (83.5%) with the balance as gas (15.5%) and a little residue (1.0%). The elemental composition of the PP tar was: C: 87.1%, H: 12.6% and O+others: 0.4% (by difference). The tar samples have been characterised by gas chromatography/mass spectrometry, heated-probe mass spectrometry and laser desorption mass spectrometry (LD-MS) to give molecular mass distributions for comparison with molecular mass ranges indicated by size-exclusion chromatography (SEC). About 50% of the tar was soluble in 1-methyl-2-pyrrolidinone, the solvent used for SEC. It appeared to consist mostly of tow molecular mass materials with elution time at 20-27 min. Mass ranges from SEC and LD-MS agreed approximately in showing the upper mass limit of the tar to be about 1200 u, consisting of aromatics, alkenes, dialkenes and only minor quantities of alkanes.