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 language | English |
|---|---|
| Pages (from-to) | 15-25 |
| Number of pages | 11 |
| Journal | Journal of Analytical and Applied Pyrolysis |
| Volume | 43 |
| Issue number | 1 |
| Publication status | Published - Aug 1997 |
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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 journal › Article
}
TY - JOUR
T1 - Catalytic degradation of polyethylene into fuel oil over mesoporous silica (KFS-16) catalyst
AU - Sakata, Yusaku
AU - Uddin, Azhar
AU - Muto, Akinori
AU - Kanada, Yasufumi
AU - Koizumi, Kazuo
AU - Murata, Katsuhide
PY - 1997/8
Y1 - 1997/8
N2 - 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.
AB - 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.
KW - Catalytic degradation
KW - Fuel oil
KW - Mesoporous silica
KW - Polyethylene
UR - http://www.scopus.com/inward/record.url?scp=0031200291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031200291&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031200291
VL - 43
SP - 15
EP - 25
JO - Journal of Analytical and Applied Pyrolysis
JF - Journal of Analytical and Applied Pyrolysis
SN - 0165-2370
IS - 1
ER -