Estimation of compound classes in coal hydrogenation liquids by thin-layer chromatography

✍ Scribed by Susumu Yokoyama; Junichi Umematsu; Kazuhiko Inoue; Takashi Katoh; Yuzo Sanada

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 592 KB
• Volume: 63
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(84)90323-5

✦ Synopsis

Compound classes in coal liquids were investigated by thin-layer chromatography coupled with a flame ionization detector (t.1.c.f.i.d.). Individual t.1.c. peaks for coal liquids were identified as paraffins, aromatics, polar compounds and more strongly polar compounds or asphaltenes in order of increasing Rf values by comparison with specific compoundsseparated previously by conventional liquid chromatography. Concentrations of compound classes for a series of samples obtained by varying the hydrogenation time were estimated and good agreement was found with the results obtained by the USBM-API 60 liquid chromatography procedure. By using the t.l.c.-f.i.d. method, the relation of distribution of compound classes to the reaction conditions of coal hydrogenation could be derived quantitatively with relative ease.