Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 49, Issue 22, Pages 13558-13565Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.5b03253
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Funding
- JSPS KAKENHI [25241022, 15H06010]
- Grants-in-Aid for Scientific Research [15H06010, 25241022] Funding Source: KAKEN
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Aromatic polyimides (PIs) have excellent thermal stability, which makes them difficult to recycle, and an effective way to recycle PIs has not yet been established. In this work, steam pyrolysis of the aromatic PI Kapton was performed to investigate the recovery of useful raw materials. Steam pyrolysis significantly enhanced the gasification of Kapton at 900 degrees C, resulting in 1963.1 mL g(-1) of a H-2 and CO rich gas. Simultaneously, highly porous activated carbon with a high BET surface area was recovered. Steam pyrolysis increased the presence of polar functional groups on the carbon surface. Thus, it was concluded that steam pyrolysis shows great promise as a recycling technique for the recovery of useful synthetic gases and activated carbon from PIs without the need for catalysts and organic solvents.
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