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Carbonization of polycyclic aromatics. 1. Carbonization of anthracene in carbon tetrachloride
Authors:Mikio Morita  Kunio Hirosawa  Shohei Takeda  Koji Ouchi
Affiliation:1. Government Industrial Development Laboratory, Hokkaido, Higashitsukisamu, Toyohira-ku, Sapporo-shi, Hokkaido 061-01, Japan;1. Department of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo-shi, Hokkaido 060, Japan
Abstract:Carbonization of anthracene in carbon tetrachloride has been investigated in the temperature range from 200 to 500 °C using a batch autoclave. Anthracene reacted with carbon tetrachloride above 200 °C and the main products were carbonaceous substances, methane, and hydrogen chloride. The benzene-insoluble carbonaceous substances contained chlorine atoms transferred from the carbon tetrachloride molecule. The reaction was considered to be induced by radicals derived from dissociation of the carbon tetrachloride molecule. The development of an anisotropic structure was observed even in the products prepared at 240 °C for 8 h. Around 400 °C a small amount, and around 250 °C a large amount, of carbon tetrachloride promoted the development of anisotropic structure. The graphitizability of the carbonaceous product paralleled the development of anisotropy. The yields of the cokes, their elemental composition and their anisotropic structure were examined in relation to reaction conditions such as temperature, time and the ratio of carbon tetrachloride to anthracene.
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