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The photochemical reaction of hydrocarbons under extreme thermobaric conditions

MetadataDetails
Publication Date2017-10-01
JournalJournal of Physics Conference Series
AuthorsAleksandr Serovaiskii, A. V. Kolesnikov, Elena Mukhina, Vladimir Kutcherov
InstitutionsGubkin Russian State University of Oil and Gas, KTH Royal Institute of Technology
Citations3

The photochemical reaction of hydrocarbons was found to play an important role in the experiments with the synthetic petroleum conducted in Diamond Anvil Cell (DAC). Raman spectroscopy with a green laser (514.5 nm) was used for in situ sample analysis. This photochemical effect was investigated in the pressure range of 0.7-5 GPa, in the temperature interval from the ambient conditions to 450°C. The power of laser used in these experiment series was from 0.05 W to 0.6 W. The chemical transformation was observed when the necessary threshold pressure (~2.8 GPa) was reached. This transformation correlated with the luminescence appearance on the Raman spectra and a black opaque spot in the sample was observed in the place where the laser focus was forwarded. The exposure time and laser power (at least in the 0.1-0.5 W range) did not play a role in the 0.1-0.5 GPa range.