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Position-specific carbon and hydrogen isotopic compositions of propane from natural gases with quantitative NMR

文献类型：期刊论文

作者Liu, Changjie1; McGovern, Gregory P.2; Liu, Peng1,3; Zhao, Heng1,3; Horita, Juske1
刊名CHEMICAL GEOLOGY
出版日期2018-07-05
卷号491页码:14-26
关键词Position-specific isotope analysis Propane Natural gas Quantitative NMR
ISSN号0009-2541
DOI10.1016/j.chemgeo.2018.05.011
文献子类Article
英文摘要Position-specific isotope compositions of light hydrocarbons are expected to provide valuable information on their formation and migration-degradation processes. Here we present a high-accuracy and high-precision (<= +/- 10 and <= +/- 1% for H-2 and C-13 isotope compositions, respectively) method to determine position-specific hydrogen and carbon isotope compositions of propane from natural gases with quantitative NMR. Customized, light-weight high-pressure sapphire NMR cells were developed for liquefied propane samples. Precision and accuracy of our technique were demonstrated using C-13-labeled compounds, neat samples of C-3-C-5 with natural isotope abundances, and inter-laboratory comparison of a C-7 sample. To determine position-specific isotope compositions of propane from natural gas samples, a method was developed to collect and purify large amount (similar to 6.8 mmol) of propane, using a variable-temperature cold trap. A test with a synthetic sample of natural gas mixture indicates that little isotope fractionation occurred during the propane separation and purification from natural gas mixtures. For the first time, high-precision and high accuracy data are reported of position-specific carbon and hydrogen isotope compositions of propane from different sources, including conventional and unconventional petroleum reservoirs. Preliminary results show that position-specific isotope fractionations between the center and terminal sites of propane vary widely for the different sources. Position-specific isotope compositions of propane have the potential to improve our understanding on the origins, migration and degradation processes of natural gas and hydrocarbons in general.
WOS关键词MAGNETIC-RESONANCE SPECTROMETRY ; C-13 NMR ; STABLE-ISOTOPE ; N-ALKANES ; MASS-SPECTROMETRY ; FATTY-ACIDS ; FRACTIONATION ; METHANE ; HYDROCARBONS ; ABUNDANCE
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000433244600002
出版者ELSEVIER SCIENCE BV
资助机构ACS-PRF(51786-ND2) ; ACS-PRF(51786-ND2) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; National Science Foundation(1048553 ; National Science Foundation(1048553 ; 1428605) ; 1428605) ; ACS-PRF(51786-ND2) ; ACS-PRF(51786-ND2) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; National Science Foundation(1048553 ; National Science Foundation(1048553 ; 1428605) ; 1428605) ; ACS-PRF(51786-ND2) ; ACS-PRF(51786-ND2) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; National Science Foundation(1048553 ; National Science Foundation(1048553 ; 1428605) ; 1428605) ; ACS-PRF(51786-ND2) ; ACS-PRF(51786-ND2) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; U.S. Department of Energy Geosciences program(DE-SC0016271) ; National Science Foundation(1048553 ; National Science Foundation(1048553 ; 1428605) ; 1428605)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88244]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Liu, Changjie; Horita, Juske
作者单位1.Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA
2.West Texas A&M Univ, Dept Chem & Phys, Canyon, TX 79016 USA
3.Chinese Acad Sci, Inst Geol & Geophys, Lanzhou Ctr Oil & Gas Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Changjie,McGovern, Gregory P.,Liu, Peng,et al. Position-specific carbon and hydrogen isotopic compositions of propane from natural gases with quantitative NMR[J]. CHEMICAL GEOLOGY,2018,491:14-26.
APA Liu, Changjie,McGovern, Gregory P.,Liu, Peng,Zhao, Heng,&Horita, Juske.(2018).Position-specific carbon and hydrogen isotopic compositions of propane from natural gases with quantitative NMR.CHEMICAL GEOLOGY,491,14-26.
MLA Liu, Changjie,et al."Position-specific carbon and hydrogen isotopic compositions of propane from natural gases with quantitative NMR".CHEMICAL GEOLOGY 491(2018):14-26.

入库方式： OAI收割

来源：地质与地球物理研究所

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