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Abiotic Hydrocarbons Generation Simulated by Fischer-Tropsch Synthesis under Hydrothermal Conditions in Ultra-deep Basins
投稿时间:2022-02-13  修订日期:2022-04-21  点此下载全文
引用本文:ZHAO Zhongfeng,LIU Xinran,LU Hong,Peng Ping’an.2022.Abiotic Hydrocarbons Generation Simulated by Fischer-Tropsch Synthesis under Hydrothermal Conditions in Ultra-deep Basins[J].ACTA GEOLOGICA SINICA(English edition),96(4):1331~1341
摘要点击次数: 93
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DOI:10.1111/1755-6724.14977
作者单位E-mail
ZHAO Zhongfeng 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China 3 University of Chinese Academy of Sciences, Beijing 100049, China  
LIU Xinran 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China 3 University of Chinese Academy of Sciences, Beijing 100049, China  
LU Hong 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China luhong@gig.ac.cn 
Peng Ping’an 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China  
 
Author NameAffiliationE-mail
ZHAO Zhongfeng 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China 3 University of Chinese Academy of Sciences, Beijing 100049, China  
LIU Xinran 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China 3 University of Chinese Academy of Sciences, Beijing 100049, China  
LU Hong 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China luhong@gig.ac.cn 
Peng Ping’an 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China  
Abstract:FTT experiments with water as a hydrogen source and three types of possible carbon sources in the subsurface (diiron 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 C33 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 CO2 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 partial reversed order (δ13C1 < δ13C2 > δ13C3 > δ13C4 > δ13C5), while the gaseous hydrocarbons produced by CO2 and HCOOH showed a positive order (δ13C1 < δ13C2 < δ13C3 < δ13C4 < δ13C5). Based on these, the alkylene mechanism and the carbonyl insertion mechanism were used to reasonably explain these characteristics.
keywords:ultra-deep basin, FTT, carbon isotope, reversed order, abiogenic hydrocarbons, hydrothermal experiments
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