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Recently the characterization method, thin-layer chromatography with a flame ionization detector (TLC-FID), has been applied to coal-derived liquids, but heavier fractions such as asphaltenes and/or preasphalthenes have been excluded. The heavier fractions are important indicators of the degree of coal-hydroliquefaction.<BR>A new analytical method has been developed to separate the pyridine solubles including the heavier fractions into four components over a silica gel rod. The method uses the following solvent system in this order: benzene/methanol (60/40), benzene/me-thanol (95/5), n-hexane/benzene (50/50). The coefficient of variation yields to within 4.7%.<BR>As a result, the TLC-FID was found to be both a useful method for simply and rapidly characterizing heavy organic coal products and applicable for estimating the sequential solvent extracts.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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