Carbon materials-catalyzed hydroliquefaction of flame-retardant plastics in organic solvents |
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Authors: | Shigeru Futamura Aihua Zhang |
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Institution: | (1) National Institute for Resources and Environment, 16-3 Onogawa, Tsukuba, Ibaraki 305-8569, Japan Tel. +81-298-61-8266; Fax +81-298-61-8409 e-mail: futamura@nire.go.jp, JP |
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Abstract: | Flame-retardant plastics, such as desktop and laptop personal computer bodies, could be completely liquefied by carbon materials-catalyzed
hydroliquefaction in tetralin without using H2 as a hydrogen source. Active carbons with larger surface areas (1450–3450 m2/g) acted as superior catalysts in transferring tetralin hydrogens to plastics. On the other hand, carbon blacks and fullerene-rich
soot were less active catalysts. Graphite and mesocarbon microbeads did not show any catalytic effects. Benzene, toluene,
and ethylbenzene were obtained as recyclable hydrocarbons; their total amounts varied from 4 wt% to 12 wt% depending on the
types of plastics and the carbon materials used. Organic bromides such as polybromodioxins were not contained in the gases
and oils of the product.
Received: July 19, 2000 / Accepted: September 17, 2000 |
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Keywords: | Flame-retardant plastics Hydroliquefaction Organic solvents Carbon materials |
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