Determination of polar compounds in Rundle shale oil

The acidic and basic components of three distillate fractions (light, middle and heavy) of shale oil from the Rundle (Queensland, Australia) deposit were selectively extracted. Capillary gas chromatography/mass spectrometry was used to identify individual polar components. The major nitrogen-containing polar compounds in the light fraction were alkyl-substituted pyridines, and substituted quinolines were more abundant in the middle and heavy fractions. Significant quantities of pyrrole derivatives were also identified. Small quantities of anilines and benzoquinolines made up the remainder of the bases. The oxygen-containing compounds were mainly phenolic in nature; alkyl-substituted phenols were the major components, but significant quantities of naphthols and traces of fluorenols were identified.

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