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Fluorescence lifetime evolution of crude oils during thermal cracking: Implications from pyrolysis experiments in a closed system (原油热解过程中荧光寿命的演化模式：基于封闭体系下原油热解实验的启示)
  • 2024-01-08
元数据
名   称 Fluorescence lifetime evolution of crude oils during thermal cracking: Implications from pyrolysis experiments in a closed system (原油热解过程中荧光寿命的演化模式：基于封闭体系下原油热解实验的启示)
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP5704.2024
DOI 10.1016/j.orggeochem.2021.104273
数据共享方式 开放下载
摘   要 In this study, pyrolysis experiments were performed on two crude oils with different origins in a
closed system,

and the pyrolyzed oils were then analyzed for spectral parameters, including fluorescence lifetime,
fluorescence spectra and infrared spectra, as well as for gross chemical compositions. The results
show that the evolution of the fluorescence lifetime of crude oil (τoil) can be divided
approximately into two stages during oil cracking. With

the increasing extent of oil cracking (PC), the τoil first increases at the early cracking stage of
PC < 40%, and then it decreases at the late cracking stage of PC > 40%. The type and concentration
of aromatics in crude oils, which can be respectively characterized by the fluorescence
lifetime of aromatics (τaro) and the saturates/aromatics ratio (Rsat/aro) of the oils,
largely control the fluorescence quantum yield and fluorescence quenching degree of

the oils, respectively, and thus the changes in the two factors during oil cracking
determine the fluorescence lifetime evolution of crude oils. The differences in fluorescence
lifetime of the crude oils that are sourced from diverse types of organic matter cannot be masked
by the oil cracking process when the PC is smaller than 80%. Combined with fluorescence or
infrared spectral data, the fluorescence lifetime potentially can be applied to
discriminate oils of various origins in petroleum reservoirs, especially in deep, light
oil/condensate reservoirs where biomarker concentration is extremely low.
学科分类
170.50
关键词
Crude oilFluorescence lifetime evolution Pyrolysis experimentOil cracking
作者 Cheng Peng
数据量 4.4 MiB
论文类型： journal
论文网址： https://doi.org/10.1016/j.orggeochem.2021.104273
期刊名称： Organic Geochemistry
出版时间： 2021-09-01
引用和标注
数据引用
Cheng Peng. Fluorescence lifetime evolution of crude oils during thermal cracking: Implications from pyrolysis experiments in a closed system (原油热解过程中荧光寿命的演化模式：基于封闭体系下原油热解实验的启示). 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.PP5704.2024.
Cheng Peng. Fluorescence lifetime evolution of crude oils during thermal cracking: Implications from pyrolysis experiments in a closed system (原油热解过程中荧光寿命的演化模式：基于封闭体系下原油热解实验的启示). 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.1016/j.orggeochem.2021.104273.
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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