气候变化领域集成服务门户(CCPortal): Characterization of oxygen-bearing geolipids in the Upper Permian Lucaogou shale, Santanghu Basin, NE China, using stepwise pyrolysis and hydrous pyrolysis

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DOI	10.1016/j.marpetgeo.2021.104926
	Characterization of oxygen-bearing geolipids in the Upper Permian Lucaogou shale, Santanghu Basin, NE China, using stepwise pyrolysis and hydrous pyrolysis
	Zhang, Ting; Wang, Zuodong; Wang, Xiaofeng; Liu, Peng; Wang, Yongli; Wu, Yuandong
通讯作者	Wang, ZD (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0264-8172
EISSN	1873-4073
卷号	126
英文摘要	Oxygen-bearing geolipids, including fatty acids, lactones, and ketones, have been identified in abundance in the Upper Permian shale of the Lucaogou Formation in the Sangtanghu Basin in China. However, the potential for petroleum generation, possible origin, and occurrence state of these compounds remain undetermined. Pyrolysis experiments were conducted by combining flash pyrolysis with hydrous pyrolysis. Flash pyrolysis revealed that the oxygen-bearing geolipids, including fatty acids, lactones, and isoprenoid ketones, exist in both free and adsorbed states, and methyl ketones can be produced by pyrolysis at temperature above 400 degrees C. The evolution behaviors of pymlyzates and gases produced at different temperatures are related to the thermal desorption and cleavage of chemical bonds in kemgen. Comparison of the oxygen-bearing compounds detected in flash pyrolysis and gases produced in hydrous pyrolysis suggested that the oxygen-bearing geolipids were possible sources of CO2 formation at low temperatures in the Lucaogou shale. The decomposition of fatty acids, lactones, and ketones causes the removal of oxygen-containing functional groups and the formation of CO2 and petroleum. Our study firstly demonstrates that the oxygen-bearing geolipids in the Lucaogou shale occur primarily in the free and/or adsorbed state, which indicates that these geolipids derived from microbial degradation. The short chain C-19-C-26 steranes and C-26-C-29 norhopanes detected in Lucaogou shale are also proved this source. Furthermore, petroleum and gases can be produced via deoxygenation of oxygen-bearing compounds, may revealing that the oxygen-bearing geolipids play a significant role in the process of petroleum generation.
英文关键词	Fatty acids; Lactones; Ketones; Occurrence state; Petroleum generation
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000620926600002
来源期刊	MARINE AND PETROLEUM GEOLOGY
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/253972
作者单位	[Zhang, Ting; Wang, Zuodong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Zhang, Ting; Wang, Zuodong] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China; [Wang, Xiaofeng] Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China; [Liu, Peng] Xian Univ Sci & Technol, Coll Safety Sci & Engn, Xian 710054, Shanxi, Peoples R China; [Wang, Yongli] Chinese Acad Sci, CAS Ctr Excellence Life & Paleoenvironm, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China; [Wu, Yuandong] Dongguan Univ Technol, Res Ctr Ecoenvironm Engn, Dongguan 523808, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ting,Wang, Zuodong,Wang, Xiaofeng,et al. Characterization of oxygen-bearing geolipids in the Upper Permian Lucaogou shale, Santanghu Basin, NE China, using stepwise pyrolysis and hydrous pyrolysis[J]. 中国科学院西北生态环境资源研究院,2021,126.
APA	Zhang, Ting,Wang, Zuodong,Wang, Xiaofeng,Liu, Peng,Wang, Yongli,&Wu, Yuandong.(2021).Characterization of oxygen-bearing geolipids in the Upper Permian Lucaogou shale, Santanghu Basin, NE China, using stepwise pyrolysis and hydrous pyrolysis.MARINE AND PETROLEUM GEOLOGY,126.
MLA	Zhang, Ting,et al."Characterization of oxygen-bearing geolipids in the Upper Permian Lucaogou shale, Santanghu Basin, NE China, using stepwise pyrolysis and hydrous pyrolysis".MARINE AND PETROLEUM GEOLOGY 126(2021).