Conversion of the volatile thermal decomposition products of polyamide-6,6 and ABS over Y zeolites

János Bozi, Z. Czégény, M. Blazso

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Thermal decomposition products of polyamide-6,6 (PA-6,6) and acrylonitrile-butadiene-styrene copolymer (ABS) have been converted over Y zeolites at above the temperature of thermal decomposition of these polymers. On-line pyrolysis-gas chromatography/mass spectrometric (Py-GC/MS) analysis revealed the nature of chemical reactions of the pyrolysis gas and oil components taking place over protonic and sodium Y zeolite. Selected TG-MS ion curves of polymer and zeolite mixtures indicated the changes due to the catalytic conversion of the thermally produced products in to compounds of high volatility. The experimental results demonstrate that protonic Y zeolite (HUSY and NH4Y) denitrogenate the pyrolysis oil components and transform the hydrocarbon part of their molecules into aromatic compounds. Over sodium Y zeolite (NaY) pyrolysis product molecules of low volatility are cracked to gases and to compounds of gasoline volatility, but no denitrogenation occur. The aromatizing and hydrogenating activity of NaY zeolite is considerably lower, than that of protonic Y zeolites.

Original languageEnglish
Pages (from-to)84-94
Number of pages11
JournalThermochimica Acta
Volume472
Issue number1-2
DOIs
Publication statusPublished - Jun 10 2008

Fingerprint

Acrylonitrile
Zeolites
acrylonitriles
butadiene
Butadiene
Polyamides
styrenes
zeolites
thermal decomposition
pyrolysis
volatility
Styrene
copolymers
Pyrolysis
Copolymers
products
denitrogenation
oils
sodium
gasoline

Keywords

  • ABS
  • Catalytic conversion
  • Polyamide-6,6
  • Pyrolysis-GC/MS
  • TG-MS
  • Y zeolite

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Chemistry (miscellaneous)

Cite this

Conversion of the volatile thermal decomposition products of polyamide-6,6 and ABS over Y zeolites. / Bozi, János; Czégény, Z.; Blazso, M.

In: Thermochimica Acta, Vol. 472, No. 1-2, 10.06.2008, p. 84-94.

Research output: Contribution to journalArticle

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