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Kinetic isotope effect and reaction pathways of thermogenic propane generation at early maturation stage: Insights from position-specific carbon isotope distribution

文献类型：期刊论文

作者Liu, Peng3; Wang, Xiaofeng2; Liu, Changjie1; Liu, Wenhui2
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2023-07-01
卷号153页码:11
ISSN号0264-8172
关键词Position-specific isotope Propane Natural gas Early stage of maturation Turpan-hami basin
DOI10.1016/j.marpetgeo.2023.106252
英文摘要An intramolecular isotopic study was conducted on natural gases from the Turpan-Hami Basin of China. The set of natural gases exhibits larger 813C values of the terminal position compared with those at the central position of propane, with AC-T (813Ccentral-813Cterminal) values ranging from - 3.8 parts per thousand to -0.7 parts per thousand. During the thermal cracking of kerogen, the primary kinetic isotope effect is on the terminal carbon position to generate n-propyl radicals and on the central carbon position to produce i-propyl radicals. Therefore, distinct reaction pathways significantly in-fluence the position-specific carbon isotope distribution in thermogenic propane. In the early stage of matura-tion, propane is preferentially generated from the i-propyl radicals by capturing hydrogen atoms owing to the lower dissociation energies of i-propyl radicals cleavage from kerogen compared with those of n-propyl radicals, resulting in larger 813C values in the terminal position compared with those at the central position of generated propane. The position-specific 13C isotope composition of propane could provide new insights into revealing the generation mechanism of natural gas in the geological period at the atomic level.
WOS关键词TURPAN-HAMI BASIN ; GIANT GAS-FIELDS ; NATURAL GASES ; GENETIC TYPES ; LIGHT-HYDROCARBONS ; HYDROGEN ISOTOPES ; STABLE-ISOTOPE ; CHINA EVIDENCE ; ALKANE GASES ; ORDOS BASIN
资助项目National Natural Science Foundation of China[42102202] ; National Natural Science Foundation of China[41972134] ; "100-Talent" program from Chinese Academy of Sciences
WOS研究方向Geology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000989737500001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; "100-Talent" program from Chinese Academy of Sciences ; "100-Talent" program from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "100-Talent" program from Chinese Academy of Sciences ; "100-Talent" program from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "100-Talent" program from Chinese Academy of Sciences ; "100-Talent" program from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "100-Talent" program from Chinese Academy of Sciences ; "100-Talent" program from Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110948]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Wang, Xiaofeng; Liu, Changjie
作者单位1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
3.Xian Univ Sci & Technol, Coll Safety Sci & Engn, Xian 710054, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Peng,Wang, Xiaofeng,Liu, Changjie,et al. Kinetic isotope effect and reaction pathways of thermogenic propane generation at early maturation stage: Insights from position-specific carbon isotope distribution[J]. MARINE AND PETROLEUM GEOLOGY,2023,153:11.
APA Liu, Peng,Wang, Xiaofeng,Liu, Changjie,&Liu, Wenhui.(2023).Kinetic isotope effect and reaction pathways of thermogenic propane generation at early maturation stage: Insights from position-specific carbon isotope distribution.MARINE AND PETROLEUM GEOLOGY,153,11.
MLA Liu, Peng,et al."Kinetic isotope effect and reaction pathways of thermogenic propane generation at early maturation stage: Insights from position-specific carbon isotope distribution".MARINE AND PETROLEUM GEOLOGY 153(2023):11.

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来源：地质与地球物理研究所

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