ncdc logo title
ncdc_logo
Characterization of free and bound bitumen fractions in a thermal maturation shale sequence. Part 1: Acidic and neutral compounds by negative-ion ESI FT-ICR MS
  • 2024-01-08
元数据
名   称 Characterization of free and bound bitumen fractions in a thermal maturation shale sequence. Part 1: Acidic and neutral compounds by negative-ion ESI FT-ICR MS
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP4422.2024
DOI 10.1016/j.orggeochem.2019.05.005
数据共享方式 开放下载
摘   要 To evaluate petroleum generation and expulsion processes, pyrolysis experiments that simulate
increased overburden pressures were conducted on an immature organic-rich shale with type-II kerogen.
Expelled oils and residual rocks with different maturities covering the oil window were recovered from
the experiments. The residual rocks were then subjected to stepwise extraction in conjunction with step_x0002_wise dissolution of the carbonate and silicate minerals to obtain free and bound bitumen fractions. The
compositions of acidic and neutral compounds in both expelled oils and bitumen fractions were investigated by negative-ion electrospray (ESI) Fourier transform ion cyclotron resonance mass spectrometry
(FT-ICR MS). Neutral nitrogen compounds were found to only exist in expelled oil and free bitumen, while
acidic compounds (typically contain carboxylic functional group(s)) were prevalent in bound bitumen.
Oxygen-containing functional groups with high polarity in oxygen-containing compounds and oxygenated nitrogen/sulfur compounds are proposed to be the dominant bonding forces that facilitate the
interaction between bitumen and mineral matrix or kerogen. Semiquantitative results of acidic compounds reveal that the distributions of acidic compounds in both free and bound bitumens vary throughout the oil window stage, especially for those in the bound phase after an intense oil expulsion from the
shale at Easy%Ro > 0.9. During maturation, acidic compounds in free and bound bitumens gradually
decreased in their abundances. However, oil expulsion from the shale brought about a significant redistribution of acidic compounds among expelled oil, free and bound bitumens. These results indicate that
polar components in shales are closely related to thermal maturation of organic matter and oil expulsion
from the shales in a petroleum system
学科分类
170.50
关键词
FT-ICR MSFree bitumenBound bitumenMaturation sequencePolar compoundsHydrocarbon expulsion
作者 Yinhua Pan
数据量 5.6 MiB
论文类型： journal
论文网址： https://doi.org/10.1016/j.orggeochem.2019.05.005
期刊名称： Organic Geochemistry
出版时间： 2019-08-01
引用和标注
数据引用
Yinhua Pan. Characterization of free and bound bitumen fractions in a thermal maturation shale sequence. Part 1: Acidic and neutral compounds by negative-ion ESI FT-ICR MS. 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.PP4422.2024.
Yinhua Pan. Characterization of free and bound bitumen fractions in a thermal maturation shale sequence. Part 1: Acidic and neutral compounds by negative-ion ESI FT-ICR MS. 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.2019.05.005.
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。
项目信息 详情

© 中国科学院西北生态环境资源研究院 2005- 备案号：陇ICP备2021001824号-21

兰州市东岗西路320号 730000 电话：0931-4967592, 0931-4967596