Analysis of coal-derived liquid obtained by mild hydrogenation: 2. Neutral oil distilling at 343–464 °C

✍ Scribed by Takashi Katoh; Koji Ouchi

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 901 KB
• Volume: 66
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(87)90213-4

✦ Synopsis

Coal-derived liquid, from Japanese Taiheiyo coal, obtained under mild hydrogenation was analysed to elucidate the chemical structure of parent coal. The n-hexane soluble neutral part was fractionated into 7 parts by vacuum distillation. The analysis of the lower three fractions has already been reported. The higher boiling three fractions, DS04 (5.1 wt % of neutral oil), DS05 (27.3 wt %) and DS06 (27.7 wt %) were separated by liquid chromatography according to hydrocarbon types and each sub-fraction was analysed by g.c. and g.c.-m.s. Saturates were most abundant and in the distribution of n-alkanes, even carbon number saturates were greater than those of odd carbon. Some sub-fractions contained tricyclic diterpanes, steranes and hopane type triterpanes.

Mono-, di-and tri-aromatic diterpanes were also found. Two aromatic ring hydrocarbons with some naphthene rings were the most abundant type.