Shock-induced pyrolysis of naphthalene and related polycyclic aromatic hydrocarbons (anthracene, pyrene, and fluoranthene) at pressures of 12–33.7GPa

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• 作者：Mimura ; Koichi ; Madono ; Tetsuji ; Toyama ; Seiji ; Sugitani ; Kenichiro ; Sugisaki ; Ryuichi ; Iwamatsu ; Sho-ichi ; et. al.
• 关键词：Shock-induced pyrolysis ; Polycyclic aromatic hydrocarbons (PAHs) ; Naphthalene ; Anthracene ; Pyrene ; Fluoranthene ; Carbonization ; Shock temperature ; Residual temperature ; Peak shock pressure
• 刊名：Journal of Analytical and Applied Pyrolysis
• 出版年：2004
• 出版时间：November, 2004
• 年：2004
• 卷：72
• 期：2
• 页码：273-278
• 全文大小：233 K

文摘

To examine the behavior of polycyclic aromatic hydrocarbons (PAHs) during shock-induced pyrolysis, we performed shock recovery experiments of various PAHs (naphthalene, anthracene, pyrene, and fluoranthene) at pressures ranging from 12.0 to 33.7GPa. The shock-induced pyrolysis predominantly produced amorphous carbon. The pyrolysis consists of PAH reactions to synergic actions of thermal and high-pressure factors happening during the order of 1μs (the first stage) and reactions to a thermal factor under the ambient pressure happening during the order of 10ms (the second stage). In the first stage, we produced mainly amorphous carbon. In the second stage, the pyrolysis products were secondarily formed PAHs, including mainly methylation and dimerization compounds of the substrate. Because the products of shock-induced pyrolysis for PAHs contained rarely coplanar aromatic hydrocarbons including strongly carcinogenic compounds, shock pyrolysis should have various advantages in the safe decomposition of organic wastes.