Steam Pyrolysis of Polyimides: Effects of Steam on Raw Material Recovery
Steam Pyrolysis of Polyimides: Effects of Steam on Raw Material Recovery
复制标题
聚酰亚胺的蒸汽热解：蒸汽对原料回收的影响
DOI：
10.1021/acs.est.5b03253
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发表时间：
2015
影响因子：
11.4
通讯作者：
Tomohito Kameda Toshiaki Yoshioka
中科院分区：
文献类型：
--
作者：
Shogo Kumagai;Tomoyuki Hosaka;Tomohito Kameda Toshiaki Yoshioka
芳香族聚酰亚胺（PIs）具有优良的热稳定性，这使得其难以回收，目前尚未建立有效的回收方法。本文采用水蒸气热解的方法对芳香族皮卡普顿进行了研究，探讨了其回收有用原料的方法。900℃蒸汽热解显著促进了Kapton的气化，产生1963.1 mL g - 1的富h2co气体。同时，回收了具有高BET表面积的高孔活性炭。水蒸气热解增加了碳表面极性官能团的存在。综上所述，蒸汽热解作为一种不需要催化剂和有机溶剂就能从pi中回收有用的合成气和活性炭的回收技术，具有很大的前景。
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 °C, resulting in 1963.1 mL g–1of a H2and 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.