| Инд. авторы: | Melenevsky V.N., Kontorovich A.E., Huang W.-L., Larichev A.I., Bul'bak T.A. |
| Заглавие: | Hydrothermal pyrolysis of organic matter in Riphean mudstone |
| Библ. ссылка: | Melenevsky V.N., Kontorovich A.E., Huang W.-L., Larichev A.I., Bul'bak T.A. Hydrothermal pyrolysis of organic matter in Riphean mudstone // Geochemistry International. - 2009. - Vol.47. - Iss. 5. - P.476-484. - ISSN 0016-7029. - EISSN 1531-8397. |
| Внешние системы: | DOI: 10.1134/S0016702909050048; SCOPUS: 2-s2.0-66149152655; |
| Реферат: | eng: The catagenesis of organic matter (OM) was modeled by the hydrothermal pyrolysis of a source rock (Riphean mudstone from eastern Siberia). Isothermal experiments 72-h long were carried out in an aqueous environment in autoclaves at temperatures of 300, 310, 320,..., 370°. The pyrolysis products were analyzed for yield of extract, organic carbon, and parameters of Rock-Eval pyrolysis. The amount of the generated liquid hydrocarbon (HC) compounds increased to a temperature of 340°C and then decreased. The experimental trend of the hydrogen index (HI) dependence on the TMax temperature generally coincided with that for natural OM maturation. The carbon isotopic composition of the insoluble (in organic solvents) OM remained practically unchanged in the course of the experiments. The carbon structure of the solid remnants of the experimental samples was ordered (after the experiments) with the origin of turbostratic graphite with a spacing of d002 ≈ 3.5 A°. We also conducted pyrolysis in a diamond anvil cell equipped with a digital camera in order to obtain additional qualitative and quantitative information on oil generation and emigration in the source rock and isolated kerogen. Chemical kinetic parameters of kerogen cracking were calculated for pyrolysis in an open system. The extrapolation of the high-temperature experimental results is discussed with reference to natural OM maturation. © Pleiades Publishing, Ltd. 2009.
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| Ключевые слова: | Riphean; pyrolysis; organic matter; mudstone; isotopic composition; hydrocarbon; catagenesis; Cracking (chemical); Thermogravimetric analysis; Rock products; Organic solvents; Organic carbon; Open systems; Kerogen; Hydrogen; Hydrocarbons; Graphite; Fire hazards; Extraction; Experiments; Biological materials; Biogeochemistry; Approximation theory; Turbostratic; Source rocks; Rock-Eval pyrolysis; Riphean; Quantitative information; Pyrolysis products; Organic matter; Liquid hydrocarbons; Isothermal experiments; Hydrogen indices; High temperature; Eastern Siberia; Diamond-anvil cell; source rock; Catagenesis; Carbon structures; Carbon isotopic composition; Aqueous environment; Chemical kinetics; |
| Издано: | 2009 |
| Физ. характеристика: | с.476-484 |