The behavior of cementite (Fe3C) in aqueous environments was investigated in the thermobaric range of 180–950°C and 2–6 GPa. When interacting with water, cementite was transformed into wüstite and magnetite. The gaseous reaction products were represented mainly by saturated hydrocarbons with linear and branched structures up to C7. The composition of the hydrocarbon products synthesized from cementite and water at extreme thermobaric parameters varied from light mixtures similar to «dry» natural gas to complex hydrocarbon systems similar to «wet» natural gas and gas condensate. During the investigation, it was discovered that the chemical reaction between iron carbide and water begins at 220°C under extreme pressure, which is significantly lower than the temperature at which the reaction of cementite with water begins at ambient pressure.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 39–42 July –August, 2022.
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Serovaiskii, A.Y., Kutcherov, V.G. The Stability of Cementite in the Presence of Water at Extreme Temperatures and Pressures. Chem Technol Fuels Oils 58, 615–619 (2022). https://doi.org/10.1007/s10553-022-01427-y
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DOI: https://doi.org/10.1007/s10553-022-01427-y