Peculiarities of Composition of Hydrocarbon and Heteroatomic Substances Obtained during Conversion of Kashpir Oil Shale in Supercritical Water

Abstract

The composition of oily fractions (OFs) formed by the Kashpir oil shale conversion in a flow of water vapor and supercritical water under uniform heating from 300 to 550°C is studied by means of gas-chromatography/ mass-spectrometry, IR, and 1H NMR spectroscopy. The maximum yield of the oil fraction is observed at 360–390°C. Alkanes, alkenes, and alkyl-derivatives of naphthalene and benzothiophene are the major components of the OFs formed below 440°C. A significant predominance of even alkanes and alkenes over their odd homologies is detected above 440°C. The peculiarities in the varying of the content of specific groups and individual polyaromatic substances are discussed.