Abiotic Hydrocarbons Generation Simulated by FischerTropsch Synthesis under Hydrothermal Conditions in Ultradeep Basins
发布时间：2024-01-08
元数据
名 称
Abiotic Hydrocarbons Generation Simulated by FischerTropsch Synthesis under Hydrothermal Conditions in Ultradeep Basins
科技资源标识
CSTR:11738.14.NCDC.XDA14.PP4404.2024
DOI
10.1111/1755-6724.14977
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摘 要
TT experiments with water as a hydrogen source and three types of possible carbon sources in the subsurface (diron nonacarbonyl, siderite and formic acid, representing CO, CO2 and a simple organic acid, respectively) were carried out in this study. Our experimental results showed that n-alkanes with the highest carbon number of Css were produced when CO was used as a carbon source (series A); a variety of polycyclic aromatic hydrocarbons (PAHs) were detected in series B with CO, as a carbon source; gaseous hydrocarbons were also detected with formic acid added (series C). The different products in the three series showed that there were different hydrocarbon generation mechanisms and reaction processes with different carbon sources. The generation of long-chain n-alkanes in series A provided experimental support for the formation of abiogenic petroleum underground, which was of significance to early membranes on the Earth. PAHs in series B provide experimental support for the possibility of an abiotic source of reduced carbon on other planets., The carbon isotopes of gaseous hydrocarbons produced by Co exhibited a parial reversed order (olc, 9lC,> lC,> lCs), while the gaseous hydrocarbons produced by CO, and HCoOH showed a positive order (s"C,C,< oC,). Based on these, the alkylene mechanism and the carbonyl insertion mechanism were used to reasonably explain thesecharacteristics.
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CSTR:11738.14.NCDC.XDA14.PP4404.2024
10.1111/1755-6724.14977