Abstract
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 C2+ gases in pyrolysis at 800°C. An increase in the temperature of the shale hydrothermal treatment leads to a monotonic increase in the С1/С2+ 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 С2+ gases linearly correlates with the content of alkyl structures.
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The study was financially supported by the Russian Science Foundation (project no. 23-27-00139: Study of the process of hydrocarbon gases formation by Domanik kerogen during the simulation of its thermal maturation in a hydrothermal experiment and dry pyrolysis.
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Bushnev, D.A., Burdelnaya, N.S., Ilchenko, A.A. et al. Composition of Hydrocarbon Gases Formed by Dry Pysolysis of Domanik Shale Kerogen after Hydrothermal Experiment. Pet. Chem. 63, 1054–1060 (2023). https://doi.org/10.1134/S0965544123080017
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DOI: https://doi.org/10.1134/S0965544123080017