Catalytic degradation of polyethylene into fuel oil over mesoporous silica (KFS-16) catalyst

Yusaku Sakata, Azhar Uddin, Akinori Muto, Yasufumi Kanada, Kazuo Koizumi, Katsuhide Murata

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

The thermal degradation of plastic polymers into fuel oil over mesoporous silica (KFS-16) catalyst has been investigated. The product yields, composition and degradation rate of polyethylene over KFS-16 were compared with those over solid acid catalyst (silica-alumina and zeolite) and non-catalytic thermal degradation. The initial rate of degradation of PE over KFS-16, which possesses no acid sites was as fast as that over silica-alumina (SA-1) and the yield of liquid products was higher. The composition of the liquid products of degradation over KFS-16 was different from that over SA-1 and similar to that of non-catalytic thermal degradation. SA-1 catalyst deactivated very rapidly due to coke deposition, whereas KFS-16 deactivated much more slowly. These findings over mesoporous silica suggest that the mesopores surrounded by the silica sheet may act as a flask for storing radical species for a long time and then long-lived radicals accelerate the degradation of plastics.

Original languageEnglish
Pages (from-to)15-25
Number of pages11
JournalJournal of Analytical and Applied Pyrolysis
Volume43
Issue number1
Publication statusPublished - Aug 1997

Fingerprint

Fuel Oils
fuel oils
Fuel oils
Polyethylene
Silicon Dioxide
Polyethylenes
polyethylenes
Silica
degradation
silicon dioxide
thermal degradation
catalysts
Degradation
Catalysts
Pyrolysis
Aluminum Oxide
Alumina
plastics
products
aluminum oxides

Keywords

  • Catalytic degradation
  • Fuel oil
  • Mesoporous silica
  • Polyethylene

ASJC Scopus subject areas

  • Analytical Chemistry
  • Physical and Theoretical Chemistry

Cite this

Catalytic degradation of polyethylene into fuel oil over mesoporous silica (KFS-16) catalyst. / Sakata, Yusaku; Uddin, Azhar; Muto, Akinori; Kanada, Yasufumi; Koizumi, Kazuo; Murata, Katsuhide.

In: Journal of Analytical and Applied Pyrolysis, Vol. 43, No. 1, 08.1997, p. 15-25.

Research output: Contribution to journalArticle

Sakata, Yusaku ; Uddin, Azhar ; Muto, Akinori ; Kanada, Yasufumi ; Koizumi, Kazuo ; Murata, Katsuhide. / Catalytic degradation of polyethylene into fuel oil over mesoporous silica (KFS-16) catalyst. In: Journal of Analytical and Applied Pyrolysis. 1997 ; Vol. 43, No. 1. pp. 15-25.
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