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  • 1.
    Kudriavtcev, Danil
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Kutcherov, Vladimir G.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Dubrovinsky, L. S.
    Raman high-pressure study of butane isomers up to 40 GPa2018In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 8, no 11, article id 115104Article in journal (Refereed)
    Abstract [en]

    Raman spectroscopy studies on n and i-butane were performed at pressures of up to 40 GPa at ambient temperatures using the DAC technique. Normal butane undergoes two phase transitions at 1.9(5) GPa and 2.9(5) GPa and isobutane at 2.7(5) GPa and 3.5(5) GPa. These phase transitions were identified based on observations of the splitting Raman modes and the appearance or disappearance of particular Raman peaks. Our results demonstrate the complex, high-pressure behavior of butane isomers.

  • 2.
    Kudryavtsev, Daniil
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Serovaiskii, Alexander
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Multhina, Elena
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Kolesnikov, Anton
    Gasharova, Biliana
    Kutcherov, Vladimir G.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Dubrovinsky, Leonid
    Raman and IR Spectroscopy Studies on Propane at Pressures of Up to 40 GPa2017In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 121, no 32, p. 6004-6011Article in journal (Refereed)
    Abstract [en]

    Raman and IR spectroscopy studies on propane were performed at pressures of up to 40 GPa at ambient temperatures using the diamond anvil cell technique. Propane undergoes three phase transitions at 6.4(5), 14.5(5), and 26.5(5) GPa in Raman spectroscopy and at 7.0(5), 14.0(5), and 27.0(5) GPa in IR spectroscopy. The phase transitions were identified using the Raman and IR splitting modes and the appearance or disappearance of peaks, which clearly corresponded to the changes in the frequencies of the modes as the pressure changed. Our results demonstrate the complex high-pressure behavior of solid propane.

  • 3.
    Mukhina, Elena
    et al.
    KTH.
    Kolesnikov, A
    KTH.
    Kudryavtsev, D
    KTH.
    Kutcherov, V
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Deep genesis of hydrocarbons under oxidized conditionsIn: Article in journal (Refereed)
  • 4.
    Mukhina, Elena
    et al.
    KTH.
    Kudryavtsev, D
    KTH.
    Kolesnikov, A
    Serovaisky, A
    KTH.
    Kutcherov, Vladimir G.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    The influence of a sample container material on high pressure formation of hydrocarbonsIn: Article in journal (Refereed)
  • 5.
    Serovaiskii, Aleksandr
    et al.
    Gubkin Russian State Univ Oil & Gas, Natl Res Univ, Dept Phys, Leniskiy Ave 65-1, Moscow 119991, Russia..
    Mukhina, Elena
    Skolkovo Inst Sci & Technol, Bolshoy Blvd 30,Bld 1, Moscow 121205, Russia..
    Dubrovinsky, Leonid
    Univ Bayreuth, Bayer Geoinst, Univ Str 30, D-95440 Bayreuth, Germany..
    Chernoutsan, Aleksey
    Gubkin Russian State Univ Oil & Gas, Natl Res Univ, Dept Phys, Leniskiy Ave 65-1, Moscow 119991, Russia..
    Kudriavtcev, Danil
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    McCammon, Catherine
    Univ Bayreuth, Bayer Geoinst, Univ Str 30, D-95440 Bayreuth, Germany..
    Aprilis, Georgios
    Univ Bayreuth, Lab Crystallog, Mat Phys & Technol Extreme Condit, D-95440 Bayreuth, Germany..
    Kupenko, Ilya
    Univ Munster, Inst Mineral Westfalische Wilhelms, Corrensstr 24, D-48149 Munster, Germany..
    Chumakov, Aleksandr
    ESRF European Synchrotron, CS40220, F-38043 Grenoble 9, France..
    Hanfland, Michael
    ESRF European Synchrotron, CS40220, F-38043 Grenoble 9, France..
    Kutcherov, Vladimir G.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology. KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.). Department of Physics, Gubkin Russian State University of Oil and Gas (National Research University), Leniskiy avenue 65/1, Moscow, 119991, Russian Federation.
    Fate of Hydrocarbons in Iron-Bearing Mineral Environments during Subduction2019In: Minerals, ISSN 2075-163X, E-ISSN 2075-163X, Vol. 9, no 11, article id 651Article in journal (Refereed)
    Abstract [en]

    Subducted sediments play a key role in the evolution of the continental crust and upper mantle. As part of the deep carbon cycle, hydrocarbons are accumulated in sediments of subduction zones and could eventually be transported with the slab below the crust, thus affecting processes in the deep Earth's interior. However, the behavior of hydrocarbons during subduction is poorly understood. We experimentally investigated the chemical interaction of model hydrocarbon mixtures or natural oil with ferrous iron-bearing silicates and oxides (representing possible rock-forming materials) at pressure-temperature conditions of the Earth's lower crust and upper mantle (up to 2000(+/- 100) K and 10(+/- 0.2) GPa), and characterized the run products using Raman and Mossbauer spectroscopies and X-ray diffraction. Our results demonstrate that complex hydrocarbons are stable on their own at thermobaric conditions corresponding to depths exceeding 50 km. We also found that chemical reactions between hydrocarbons and ferrous iron-bearing rocks during slab subduction lead to the formation of iron hydride and iron carbide. Iron hydride with relatively low melting temperature may form a liquid with negative buoyancy that could transport reduced iron and hydrogen to greater depths.

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