KFU. Card publication. Conversion of High-Carbon Domanic Shale in Sub- And Supercritical Water

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FEDERAL UNIVERSITY

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CONVERSION OF HIGH-CARBON DOMANIC SHALE IN SUB- AND SUPERCRITICAL WATER

Form of presentation

Articles in international journals and collections

Year of publication

2020

Язык

английский

Authors, employees of KFU

Vakhin Aleksey Vladimirovich, author

Kayukova Galina Petrovna, author

Morozov Vladimir Petrovich, author

Nasyrova Zukhra Ramisovna, author

Onishhenko Yaroslav Viktorovich, author

Bibliographic description in the original language

Nasyrova, Z.R. Conversion of high-carbon Domanic Shale in sub-and supercritical water / Z.R. Nasyrova, G.P. Kayukova, Y.V. Onishchenko, V.P. Morozov, A.V. Vakhin // Energy & Fuels. – 2020. – Vol. 34. – No 2. – P. 1329–1336.

Annotation

This paper presents the results of the conversion of high-carbon Domanic rock from sediments of the Semiluki-Mendym horizon of the Volga-Ural petroleum Basin in sub- and supercritical waters at temperatures of 320, 374, and 420 ?C in a neutral nitrogen environment for 1 h. The initial sample is a siliceous-clay carbonate rock with an organic matter content of 10.6 wt %, the largest part of which is insoluble kerogen. The end products of all experiments are characterized by an increase in the content of saturated hydrocarbons with a noticeable decrease in the content of resins and asphaltenes. The highest yield of the extract (3.98 against 3.12 wt %) compared with the initial rock is observed in the experiment in subcritical water at 320 ?C as a result of the preferred degradation of resins and more complete extraction of asphaltenes from the rock. With an increase in temperature to supercritical water conditions at 374 ?C and pressure up to 24.6 MPa, kerogen transformation processes are observed due to the C-C, C-N, and C-O bonds destruction with the formation of low-boiling saturated hydrocarbons and high-carbon components such as carbene-carboids in the products of the experiments. The highest yield of saturated hydrocarbons occurs at the experiment of Domanic rock in supercritical water at 420 ?C and 24.4 MPa. Under these conditions, in comparison with lower temperatures, the yield of the extract from the rock decreases due to intense gas formation. In the composition of the gases formed in the experiments, there are hydrocarbons: CH4, C2H6, C3H8, and i-C4H10, indicating the destruction of C-C bonds. Dehydrogenation processes in supercritical water at 420 ?C are noted by the presence of H2 in the reaction system. Structural and phase changes in the mineral composition of Domanic rock were discovered as a result of supercritical water exposure at 374 and 420 ?C. In particular, the structure of mica was changed due to the isolation of a separate phase of montmorillonite from it.

Keywords

High-Carbon Domanic Shale, Supercritical Water

The name of the journal

Energy and Fuels

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078478445&doi=10.1021%2facs.energyfuels.9b03130&partnerID=40&md5=544ea20160b82322c762f39dfb3e2f61

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=222765&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Vakhin Aleksey Vladimirovich	ru_RU
dc.contributor.author	Kayukova Galina Petrovna	ru_RU
dc.contributor.author	Morozov Vladimir Petrovich	ru_RU
dc.contributor.author	Nasyrova Zukhra Ramisovna	ru_RU
dc.contributor.author	Onishhenko Yaroslav Viktorovich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Nasyrova, Z.R. Conversion of high-carbon Domanic Shale in sub-and supercritical water / Z.R. Nasyrova, G.P. Kayukova, Y.V. Onishchenko, V.P. Morozov, A.V. Vakhin // Energy & Fuels. – 2020. – Vol. 34. – No 2. – P. 1329–1336.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=222765&p_lang=2	ru_RU
dc.description.abstract	Energy and Fuels	ru_RU
dc.description.abstract	This paper presents the results of the conversion of high-carbon Domanic rock from sediments of the Semiluki-Mendym horizon of the Volga-Ural petroleum Basin in sub- and supercritical waters at temperatures of 320, 374, and 420 ?C in a neutral nitrogen environment for 1 h. The initial sample is a siliceous-clay carbonate rock with an organic matter content of 10.6 wt %, the largest part of which is insoluble kerogen. The end products of all experiments are characterized by an increase in the content of saturated hydrocarbons with a noticeable decrease in the content of resins and asphaltenes. The highest yield of the extract (3.98 against 3.12 wt %) compared with the initial rock is observed in the experiment in subcritical water at 320 ?C as a result of the preferred degradation of resins and more complete extraction of asphaltenes from the rock. With an increase in temperature to supercritical water conditions at 374 ?C and pressure up to 24.6 MPa, kerogen transformation processes are observed due to the C-C, C-N, and C-O bonds destruction with the formation of low-boiling saturated hydrocarbons and high-carbon components such as carbene-carboids in the products of the experiments. The highest yield of saturated hydrocarbons occurs at the experiment of Domanic rock in supercritical water at 420 ?C and 24.4 MPa. Under these conditions, in comparison with lower temperatures, the yield of the extract from the rock decreases due to intense gas formation. In the composition of the gases formed in the experiments, there are hydrocarbons: CH4, C2H6, C3H8, and i-C4H10, indicating the destruction of C-C bonds. Dehydrogenation processes in supercritical water at 420 ?C are noted by the presence of H2 in the reaction system. Structural and phase changes in the mineral composition of Domanic rock were discovered as a result of supercritical water exposure at 374 and 420 ?C. In particular, the structure of mica was changed due to the isolation of a separate phase of montmorillonite from it.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	High-Carbon Domanic Shale	ru_RU
dc.subject	Supercritical Water	ru_RU
dc.title	Conversion of High-Carbon Domanic Shale in Sub- And Supercritical Water	ru_RU
dc.type	Articles in international journals and collections	ru_RU