Abstract
On the characterization of coal-derived liquids, some methods such as 1H-NMR, Mass Spectroscopy and Liquid Chromatography have been used. However, these methods have some drawbacks in chemical structure type analysis, for example comsuming time and difficulties for quantitative measurement. TLC/FID method, which combines Thin-Layer Chromatography (TLC) and Flame Ionization Detector (FID), is used for the type analysis of coal-derived liquids as a method for improving the drawbacks mentioned above.
In this review, the principle and technique of TLC/FID method are summarily described. Moreover, studies applied to coal-derived liquids are reviewed. In these studies developing conditions in TLC were examined and the accuracy of quantification was examined by comparing with SARA method or solvent separation method. The reactivities for liquefaction of coals and catalytic activities of iron-sulphur system were also discussed.
