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Carbonization of aromatic hydrocarbons—V: Microscopic features of carbons obtained by the aid of catalysts

✍ Scribed by Isao Mochida; Eiichi Nakamura; Keiko Maeda; Kenjiro Takeshita; Toru Hoshino

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 797 KB
Volume: 14
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(76)90007-5

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✦ Synopsis

Microscopic observation of carbons obtained from pure aromatic hydrocarbons by the aid of carbonization catalysts was carried out to clarify the microstructure of these carbons of different features. Reflected polarized-light microscopy distinguished needle, mosaic and isotropic cokes, former two of which were produced with aluminum chloride and the last with potassium. High resolution microscopy revealed that these carbons calcined at 1250" had different degree of layered structure, corresponding to the crystallographic parameters of these samples graphitized at 2500°C. The reasons for the carbons produced with potassium to be non-graphitizable are discussed from the macro-and micro-features of the carbons.

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