Formation of complex hydrocarbon systems from methane at the upper mantle thermobaric conditions.

ABSTRACT: The existence of methane in the Earth's mantle does not cause any doubt, however, its possible chemical transformation under the mantle thermobaric conditions is not enough known. Investigation of methane at the upper mantle thermobaric conditions, using diamond anvil cells, demonstrated the possible formation of ethane, propane and n-butane from methane, however, theoretical calculations of methane behaviour at extreme temperature and pressure predicted also heavier hydrocarbons. We experimentally investigated the chemical transformations of methane at the upper mantle thermobaric conditions, corresponding to the depth of 70-80 km (850-1000 K, 2.5 GPa), using "Toroid"-type Large reactive volume device and gas chromatography. The experimental results demonstrated the formation of the compl

SUBMITTER: Serovaiskii A 

PROVIDER: S-EPMC7067895 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature