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Formation of Iron Hydride and Iron Carbide from Hydrocarbon Systems at Ultra-High Thermobaric Conditions
Natl Res Univ, Gubkin Russian State Univ Oil & Gas, Leninsky Ave 65-1, Moscow 119991, Russia..
Natl Res Univ, Gubkin Russian State Univ Oil & Gas, Leninsky Ave 65-1, Moscow 119991, Russia..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Sustainability and Industrial Dynamics. Natl Res Univ, Gubkin Russian State Univ Oil & Gas, Leninsky Ave 65-1, Moscow 119991, Russia..ORCID iD: 0000-0001-8199-5625
2019 (English)In: Geochemistry International, ISSN 0016-7029, E-ISSN 1556-1968, Vol. 57, no 9, p. 1008-1014Article in journal (Refereed) Published
Abstract [en]

The chemical interaction of hydrocarbon systems and iron-bearing minerals was investigated under extreme upper mantle pT conditions. As a result, the formation of iron carbide and iron hydride was detected. The experiments were carried out in diamond anvil cells with laser heating. Natural crude oil from the Korchaginskoe deposit and a synthetic mixture of paraffin hydrocarbons were used as hydrocarbon systems and pyroxene-like glass and ferropericlase (Fe-57 enriched) were used as iron-bearing minerals. The experiments were carried out in the pressure range of 26-95 kbar and the temperature range of 1000-1500 degrees C (+/- 100 degrees C). The formation of iron hydride was detected at pressure of 26-69 kbar (corresponds to a depth of 100-200 km), and a mixture of iron carbide and iron hydride is formed at pressure of 75-95 kbar (corresponds to a depth of 210-290 km). The formation of iron hydrides and carbides through the interaction of hydrocarbon systems with iron-bearing minerals may indicate the possible existence of these compounds in the upper mantle.

Place, publisher, year, edition, pages
MAIK NAUKA/INTERPERIODICA/SPRINGER , 2019. Vol. 57, no 9, p. 1008-1014
Keywords [en]
petroleum, hydrocarbons, deep carbon cycle, iron carbide, iron hydride, subduction, high pressure, high temperature
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-260175DOI: 10.1134/S001670291909009XISI: 000483729800008Scopus ID: 2-s2.0-85071598254OAI: oai:DiVA.org:kth-260175DiVA, id: diva2:1355947
Note

QC 20190930

Available from: 2019-09-30 Created: 2019-09-30 Last updated: 2019-09-30Bibliographically approved

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Kutcherov, Vladimir G.

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