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| DOI | 10.1111/1755-6724.13682 |
| Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions | |
| Yingzhong W.U.; Duan Y.; Zhao Y.; Cao X.; Lanhua M.A.; Qian Y.; Zhongping L.I.; Xing L. | |
| 发表日期 | 2018 |
| ISSN | 10009515 |
| 卷号 | 92期号:5页码:1879-1887 |
| 英文摘要 | To understand the influence of the diagenetic water medium on the isotopic compositions of thermogenic coalbed gas, both hydrous and anhydrous closed-system pyrolyses were performed at temperatures of 250°C to 650°C on an herbaceous marsh peat. Compared to the results of anhydrous pyrolysis, the hydrocarbon gases generated from hydrous pyrolyses have very different hydrogen isotopic compositions. However, the carbon isotopic compositions of the hydrocarbon gases became only slightly heavier in hydrous pyrolysis, compared to that from anhydrous pyrolysis. With the progress of thermal evolution from peat to a more advanced thermal maturity of vitrinite reflectance values (R o ) of 5.5% during the pyrolysis, the difference in the average δD value increased from 52‰ to 64‰ between the hydrous pyrolysis with saltwater and anhydrous pyrolysis and increased from 18‰ to 29‰ between the hydrous pyrolysis with freshwater and anhydrous pyrolysis, respectively. The difference in the average δ 13 C value was only 1‰–2‰ between the hydrous and anhydrous pyrolysis. The relationships between the δD values of the generated hydrocarbon gases and R o values as well as among δD values of the hydrocarbon gas species are established. The close relationships among these parameters suggest that the water medium had a significant effect on the hydrogen isotopic composition and a minimal effect on the carbon isotopic composition of the hydrocarbon gases. The results of these pyrolyses may provide information for the understanding of the genesis of coalbed gas from herbaceous marsh material with the participation of different diagenetic water media. © 2018 Geological Society of China |
| 英文关键词 | diagenetic water medium; gas product; hydrogen and carbon isotope; influencing factor; simulation experiment; Xinjiang |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85055555095&doi=10.1111%2f1755-6724.13682&partnerID=40&md5=ad21251cdee673ff5a88d51cf5bfe7ea |
| 语种 | 英语 |
| WOS记录号 | WOS:000448778800013 |
| scopus关键词 | carbon isotope; comparative study; hydrogen isotope; isotopic composition; peat; pyrolysis; simulation; thermal evolution; thermal maturity; vitrinite reflectance; China; Jiangxi; Xin River |
| 来源期刊 | Acta Geologica Sinica
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/61402 |
| 推荐引用方式 GB/T 7714 | Yingzhong W.U.； Duan Y.； Zhao Y.； Cao X.； Lanhua M.A.； Qian Y.； Zhongping L.I.； Xing L.. Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions[J]. 中国科学院西北生态环境资源研究院,2018,92(5):1879-1887. |
| APA | Yingzhong W.U.； Duan Y.； Zhao Y.； Cao X.； Lanhua M.A.； Qian Y.； Zhongping L.I.； Xing L..(2018).Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions.Acta Geologica Sinica,92(5),1879-1887. |
| MLA | Yingzhong W.U.； Duan Y.； Zhao Y.； Cao X.； Lanhua M.A.； Qian Y.； Zhongping L.I.； Xing L.."Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions".Acta Geologica Sinica 92.5(2018):1879-1887. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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