Composition of Hydrocarbon Gases Formed by Dry Pysolysis of Domanik Shale Kerogen after Hydrothermal Experiment

The composition of hydrocarbon gases formed by pyrolysis of residual Domanik shale kerogen at 800°C, preceded by hydrothermal treatment at 250–375°С, was studied by pyrolytic gas chromatography. Starting from the autoclave temperature of 320–325°C, the hydrothermal treatment of the shale affects the...

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Bibliographic Details
Published in:Petroleum chemistry 2023-11, Vol.63 (9), p.1054-1060
Main Authors: Bushnev, D. A., Burdelnaya, N. S., Ilchenko, A. A., Sennikova, Ya. D.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Composition
Gas chromatography
Hydrocarbons
Hydrothermal treatment
Industrial Chemistry/Chemical Engineering
Infrared spectroscopy
Kerogen
Methane
Pyrolysis
Shale oils
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Summary:The composition of hydrocarbon gases formed by pyrolysis of residual Domanik shale kerogen at 800°C, preceded by hydrothermal treatment at 250–375°С, was studied by pyrolytic gas chromatography. Starting from the autoclave temperature of 320–325°C, the hydrothermal treatment of the shale affects the kerogen structures responsible for the formation of C 2+ gases in pyrolysis at 800°C. An increase in the temperature of the shale hydrothermal treatment leads to a monotonic increase in the С 1 /С 2+ ratio in the products of the residual kerogen pyrolysis at 800°C. The methane yield at 800°C does not correlate with the content of alkyl structures, determined in kerogen by IR spectroscopy, and the yield of С 2+ gases linearly correlates with the content of alkyl structures.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544123080017