Neutral Heteroatomic Components in Thermohydrolytic Processing Products of Sapropelites

V.Yu. Rokosova, P.V. Goryunova, Yu.V. Rokosov, N.N. Rokosova

Neutral heteroatomic components obtained during processing of Kushmurun (Kazakhstan) and Maoming (China) sapropelites in autoclaves under conditions of oxidative-hydrolytic destruction of their organic mass were studied using chromatographic-mass spectrometry and chemical informatics methods. Neutral oxygen-containing components in the products of thermohydrolytic processing of Kushmurun coal and Maoming oil shale are mainly represented by alkylmethylketones of normal structure (up to 60%) in the distribution ranges from С₁₀ to С₂₅. In smaller quantities, arylalkylketones (up to 10%), alkylphenols (up to 22%) and indanols (up to 7%) are identified. The appreciable content of alkyl aromatic compounds, characteristic for the samples of sapropelites studied, is apparently due to a peculiar diagenetic aromatization of the sapropelic starting material. The obtained results showed that the method of thermohydrolysis of sapropelites is quite suitable for elucidating their structural features caused by processes of diagenetic or catagenetic aromatization.

https://doi.org/10.31871/ijntr.4.6.25