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Characterization of chemical and carbon isotopic compositions of gases during thermochemical sulfate reduction and implications for gas origin and content
  • 2024-01-08
元数据
名   称 Characterization of chemical and carbon isotopic compositions of gases during thermochemical sulfate reduction and implications for gas origin and content
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP4464.2024
DOI 10.1038/s41598-022-13017-3
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摘   要 For identifying the occurrence and extent of thermochemical sulfate reduction (TSR) reaction of
natural gas and better understanding the chemical and carbon isotopic variations in natural gas
reservoirs, high-pressure hydro-pyrolysis with a special designed apparatus was performed using
natural gas and various amounts of MgSO4·7H2O at up to 360 °C. The yields, chemical and isotopic
compositions of the gases produced during TSR and thermal cracking were measured. As the extent
of TSR reaction increased, the concentrations of CH4, CO2 and H2S increased in a nonlinear way, while
those of C2H6 and C3H8 decreased. According to the variation of gas content, the TSR reaction of alkane
gases can be divided into an uncatalyzed and a catalyzed stage, which is diferent from previous
studies that treated the TSR reaction of alkane gases as a non-autocatalytic reduction process. As the
concentration of MgSO4·7H2O increased, the rate of TSR reaction with hydrocarbon gases increased.
The concentrations of HSO4
−
and volume of aqueous phase could be responsible for the diferent TSR
reaction rates in the catalyzed stage. The co-variation of ln(C1/C2) and ln(C2/C3) could be related to the
TSR reaction of alkane gases. Our study provides clues for understanding the compositional variations
in natural conditions
学科分类
170.50
关键词
carbon isotopic gas origin sulfate reduction
作者 Huijuan Guo
数据量 2.4 MiB
论文类型： journal
论文网址： https://doi.org/10.1038/s41598-022-13017-3
期刊名称： Scientific Reports
出版时间： 2022-06-01
引用和标注
数据引用
Huijuan Guo. Characterization of chemical and carbon isotopic compositions of gases during thermochemical sulfate reduction and implications for gas origin and content. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP4464.2024.
Huijuan Guo. Characterization of chemical and carbon isotopic compositions of gases during thermochemical sulfate reduction and implications for gas origin and content. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.1038/s41598-022-13017-3.
许可协议
知识共享许可协议   本作品采用 知识共享署名 4.0 国际许可协议进行许可。
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