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Hydrogen and Carbon Isotope Composition of Hydrocarbon Gases Generated during Pyrolysis of Peats from Different Environments

文献类型：期刊论文

作者Duan, Yi1,3; Duan, Mingchen2; Wu, Yingzhong1,4; Yao, Jingli5; Li, Zhongping1; Xing, Lantian1; Liu, Yan1
刊名ENERGY & FUELS
出版日期2019-07-01
卷号33期号:7页码:5944-5953
ISSN号0887-0624
DOI10.1021/acs.energyfuels.8b02713
英文摘要For the purpose of understanding whether the formation environment of peat precursor has a meaningful effect on the isotope ratios of thermogenic coalbed gas, pyrolysis experiments were carried out on herbaceous and reed marsh peats derived from high-latitude areas with cold dry climate and a herbaceous peat of low-latitude area with tropical moist climate. Our results show that the hydrocarbon gases generated from the herbaceous swamp peat of the high-latitude area had lighter hydrogen (-56 to 46 parts per thousand) and heavier carbon (3.3-8.2 parts per thousand) isotopic compositions than those generated from the low-latitude area peat. As the peat samples were pyrolytically matured to vitrinite reflectance levels of 2.5, 3.5, and 5.5%, respectively, the hydrogen and carbon isotope ratios of the generated hydrocarbon gases increased, and the average hydrogen isotopic differences between them decreased from -32 to -10 parts per thousand, whereas the carbon isotopic differences increased from 0.9 to 3.6 parts per thousand, respectively. We suggest that the cause of these differences may originate mainly from the environmental influence on hydrogen and carbon isotopic compositions of the peats. Our results also showed that the influence of the formation environment of the peat precursor on the isotopic compositions of the pyrolysis hydrocarbon gases is less than that of types of peat. A good positive correlation of the delta D or delta C-13 value with maturity as well as the 5D value with the delta C-13 value of the generated hydrocarbon gases exists between the two kinds of samples, respectively, and their mathematical expressions were also established. These results showed that the environmental influence on isotopic compositions of peat should be considered when evaluating the genesis of thermogenic coalbed gas using hydrogen and carbon isotopes.
WOS关键词INDIVIDUAL N-ALKANES ; NATURAL GASES ; GEOCHEMICAL CHARACTERISTICS ; EXPERIMENTAL SIMULATION ; THERMAL SIMULATION ; COALBED METHANE ; CHINA ; DELTA-C-13 ; PLANTS ; IDENTIFICATION
资助项目National Natural Science Foundation of China[41472121] ; National Natural Science Foundation of China[41772108] ; National Natural Science Foundation of China[41272125] ; Gansu Province Philosophy and Social Science[YB098]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000476693400018
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; Gansu Province Philosophy and Social Science ; National Natural Science Foundation of China ; Gansu Province Philosophy and Social Science ; National Natural Science Foundation of China ; Gansu Province Philosophy and Social Science ; National Natural Science Foundation of China ; Gansu Province Philosophy and Social Science
源URL[http://ir.iggcas.ac.cn/handle/132A11/92915]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Duan, Yi
作者单位1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
2.Gansu Inst Polit Sci & Law, Sch Econ & Management, Lanzhou 730070, Gansu, Peoples R China
3.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Shaanxi, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.CNPC, Changqing Oilfield Co, Explorat & Dev Inst, Xian 710021, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Duan, Yi,Duan, Mingchen,Wu, Yingzhong,et al. Hydrogen and Carbon Isotope Composition of Hydrocarbon Gases Generated during Pyrolysis of Peats from Different Environments[J]. ENERGY & FUELS,2019,33(7):5944-5953.
APA Duan, Yi.,Duan, Mingchen.,Wu, Yingzhong.,Yao, Jingli.,Li, Zhongping.,...&Liu, Yan.(2019).Hydrogen and Carbon Isotope Composition of Hydrocarbon Gases Generated during Pyrolysis of Peats from Different Environments.ENERGY & FUELS,33(7),5944-5953.
MLA Duan, Yi,et al."Hydrogen and Carbon Isotope Composition of Hydrocarbon Gases Generated during Pyrolysis of Peats from Different Environments".ENERGY & FUELS 33.7(2019):5944-5953.

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来源：地质与地球物理研究所

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