Advances in Earth Science
• Articles •
1, 2, ZHOU Huai-yang
1, YANG Qun-hui
JI Fu-wu, ZHOU Huai-yang, YANG Qun-hui. Review on the Researches about Abiotic Synthesis of Hydrocarbons from Dissolved CO
2 and H
2 under Hydrothermal Conditions[J]. Advances in Earth Science, 2007, 22(1): 41-48.
It is energetically feasible for hydrocarbons to be synthesized from dissolved carbon dioxide and hydrogen under appropriate hydrothermal conditions. Hydrocarbons formed this way may contribute to oil and gas accumulation and provide the precursor organic compounds for the origin and evolution of life on the early earth. It is reported that the formation of hydrocarbons will be hampered for kinetic reasons, and CH4 and C2H6, C3H8 may produced from CO2 and H2 catalyzed by awaruite and chromite under hydrothermal conditions. More research work is needed to confirm whether there are some natural minerals which can catalysis dissolved carbon dioxide and hydrogen to produce C4H10 and other longer chain hydrocarbons. Magnetite that bears one or more other transitional metal elements may be potential. It is also needed to reveal the mechanism of the reaction and the C, H isotope fractions in this process, which may be useful to establish a criterion for discriminating the abiotic hydrocarbons formed from CO2 and H2 from those originated from organic matter under hydrothermal conditions.