Reaction control in radical-transforming catalytic degradation of polypropylene

Keio Kato; Tomohiro Kamimura; Yasushi Sekine; Kaoru Fujimoto

doi:10.1627/jpi1958.42.222

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 journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	222-227
Number of pages	6
Journal	Sekiyu Gakkaishi (Journal of the Japan Petroleum Institute)
Volume	42
Issue number	4
DOIs	https://doi.org/10.1627/jpi1958.42.222
Publication status	Published - 1999 Jul
Externally published	Yes

Keywords

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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10.1627/jpi1958.42.222

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title = "Reaction control in radical-transforming catalytic degradation of polypropylene",

abstract = "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.",

keywords = "Active carbon support, Catalytic degradation, High pressure hydrogen, Iron catalyst, Liquefaction, Polypropylene",

author = "Keio Kato and Tomohiro Kamimura and Yasushi Sekine and Kaoru Fujimoto",

year = "1999",

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doi = "10.1627/jpi1958.42.222",

language = "English",

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T1 - Reaction control in radical-transforming catalytic degradation of polypropylene

AU - Kato, Keio

AU - Kamimura, Tomohiro

AU - Sekine, Yasushi

AU - Fujimoto, Kaoru

PY - 1999/7

Y1 - 1999/7

N2 - 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.

AB - 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.

KW - Active carbon support

KW - Catalytic degradation

KW - High pressure hydrogen

KW - Iron catalyst

KW - Liquefaction

KW - Polypropylene

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JO - Sekiyu Gakkaishi (Journal of the Japan Petroleum Institute)

JF - Sekiyu Gakkaishi (Journal of the Japan Petroleum Institute)

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ER -

Reaction control in radical-transforming catalytic degradation of polypropylene

Abstract

Keywords

ASJC Scopus subject areas

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