Effects of metal oxides on the pyrolysis of poly(ethylene terephthalate)

Toshiaki Yoshioka; Tomohiko Handa; Guido Grause; Zhigang Lei; Hiroshi Inomata; Tadaaki Mizoguchi

doi:10.1016/j.jaap.2005.01.004

Effects of metal oxides on the pyrolysis of poly(ethylene terephthalate)

Toshiaki Yoshioka, Tomohiko Handa, Guido Grause, Zhigang Lei, Hiroshi Inomata, Tadaaki Mizoguchi

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

Metal oxides as Ca(OH)₂, NiO, Fe₂O₃ or TiO₂ showed different effects on the pyrolysis of PET. The experiments were carried out at 700 °C in a helium atmosphere using a laboratory equipment. Ca(OH)₂ led to the hydrolysis of the PET and the following decarboxylation of the resulting terephthalic acid to benzene in a high amount up to 31 wt.%. By this means a yield of 77% related to the terephthalic acid content in the PET. The addition of Fe₂O ₃ led to a similar but weaker effect. Nickel oxide showed less influence on the pyrolysis products of PET. With titanium dioxide considerably less gaseous products were obtained. When a mixture of Ca(OH)₂ and NiO was used PET was converted to synthesis-gas with a high hydrogen and carbon monoxide content and a gas amount of about 70%. The experiments with mixtures of Fe₂O₃ or TiO₂ with Ca(OH)₂ showed little differences to the experiments with pure Ca(OH)₂.

Original language	English
Pages (from-to)	139-144
Number of pages	6
Journal	Journal of Analytical and Applied Pyrolysis
Volume	73
Issue number	1
DOIs	https://doi.org/10.1016/j.jaap.2005.01.004
Publication status	Published - 2005 Mar

Keywords

Benzene
Calcium hydroxide
Feedstock recycling
Iron(III) oxide
Nickel oxide
Poly(ethylene terephthalate) (PET)
Pyrolysis
Titanium dioxide

ASJC Scopus subject areas

Analytical Chemistry
Fuel Technology

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title = "Effects of metal oxides on the pyrolysis of poly(ethylene terephthalate)",

abstract = "Metal oxides as Ca(OH)2, NiO, Fe2O3 or TiO2 showed different effects on the pyrolysis of PET. The experiments were carried out at 700 °C in a helium atmosphere using a laboratory equipment. Ca(OH)2 led to the hydrolysis of the PET and the following decarboxylation of the resulting terephthalic acid to benzene in a high amount up to 31 wt.%. By this means a yield of 77% related to the terephthalic acid content in the PET. The addition of Fe2O 3 led to a similar but weaker effect. Nickel oxide showed less influence on the pyrolysis products of PET. With titanium dioxide considerably less gaseous products were obtained. When a mixture of Ca(OH)2 and NiO was used PET was converted to synthesis-gas with a high hydrogen and carbon monoxide content and a gas amount of about 70%. The experiments with mixtures of Fe2O3 or TiO2 with Ca(OH)2 showed little differences to the experiments with pure Ca(OH)2.",

keywords = "Benzene, Calcium hydroxide, Feedstock recycling, Iron(III) oxide, Nickel oxide, Poly(ethylene terephthalate) (PET), Pyrolysis, Titanium dioxide",

author = "Toshiaki Yoshioka and Tomohiko Handa and Guido Grause and Zhigang Lei and Hiroshi Inomata and Tadaaki Mizoguchi",

note = "Funding Information: We thank the Ministry of the Environment, Ministry of Education, Culture, Sports, Science and Technology, and the Japan Science and Technology Agency. ",

year = "2005",

month = mar,

doi = "10.1016/j.jaap.2005.01.004",

language = "English",

volume = "73",

pages = "139--144",

journal = "Journal of Analytical and Applied Pyrolysis",

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TY - JOUR

T1 - Effects of metal oxides on the pyrolysis of poly(ethylene terephthalate)

AU - Yoshioka, Toshiaki

AU - Handa, Tomohiko

AU - Grause, Guido

AU - Lei, Zhigang

AU - Inomata, Hiroshi

AU - Mizoguchi, Tadaaki

N1 - Funding Information: We thank the Ministry of the Environment, Ministry of Education, Culture, Sports, Science and Technology, and the Japan Science and Technology Agency.

PY - 2005/3

Y1 - 2005/3

N2 - Metal oxides as Ca(OH)2, NiO, Fe2O3 or TiO2 showed different effects on the pyrolysis of PET. The experiments were carried out at 700 °C in a helium atmosphere using a laboratory equipment. Ca(OH)2 led to the hydrolysis of the PET and the following decarboxylation of the resulting terephthalic acid to benzene in a high amount up to 31 wt.%. By this means a yield of 77% related to the terephthalic acid content in the PET. The addition of Fe2O 3 led to a similar but weaker effect. Nickel oxide showed less influence on the pyrolysis products of PET. With titanium dioxide considerably less gaseous products were obtained. When a mixture of Ca(OH)2 and NiO was used PET was converted to synthesis-gas with a high hydrogen and carbon monoxide content and a gas amount of about 70%. The experiments with mixtures of Fe2O3 or TiO2 with Ca(OH)2 showed little differences to the experiments with pure Ca(OH)2.

AB - Metal oxides as Ca(OH)2, NiO, Fe2O3 or TiO2 showed different effects on the pyrolysis of PET. The experiments were carried out at 700 °C in a helium atmosphere using a laboratory equipment. Ca(OH)2 led to the hydrolysis of the PET and the following decarboxylation of the resulting terephthalic acid to benzene in a high amount up to 31 wt.%. By this means a yield of 77% related to the terephthalic acid content in the PET. The addition of Fe2O 3 led to a similar but weaker effect. Nickel oxide showed less influence on the pyrolysis products of PET. With titanium dioxide considerably less gaseous products were obtained. When a mixture of Ca(OH)2 and NiO was used PET was converted to synthesis-gas with a high hydrogen and carbon monoxide content and a gas amount of about 70%. The experiments with mixtures of Fe2O3 or TiO2 with Ca(OH)2 showed little differences to the experiments with pure Ca(OH)2.

KW - Benzene

KW - Calcium hydroxide

KW - Feedstock recycling

KW - Iron(III) oxide

KW - Nickel oxide

KW - Poly(ethylene terephthalate) (PET)

KW - Pyrolysis

KW - Titanium dioxide

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