Characterization of Heteroatom Compounds in a Crude Oil and Its Saturates, Aromatics, Resins, and Asphaltenes (SARA) and Non-basic Nitrogen Fractions Analyzed by Negative-Ion Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrome
Characterization of Heteroatom Compounds in a Crude Oil and Its Saturates, Aromatics, Resins, and Asphaltenes (SARA) and Non-basic Nitrogen Fractions Analyzed by Negative-Ion Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrome
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DOI：
10.1021/ef901564e
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发表时间：
2010-03
期刊：
影响因子：
5.3
通讯作者：
Quan Shi;D. Hou;K. Chung;Chunming Xu;Suoqi Zhao;Yahe Zhang
中科院分区：
文献类型：
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作者：
Quan Shi;D. Hou;K. Chung;Chunming Xu;Suoqi Zhao;Yahe Zhang
对辽河原油进行了饱和烃、芳烃、胶质、沥青质和中性氮馏分的分离。采用负离子电喷雾电离（ESI）傅立叶变换离子回旋共振质谱（FT-ICR MS）对原油及其亚组分进行分析。结果表明，原油中的中性氮和酸性杂原子化合物含有15 - 55个碳原子，双键当量（DBE）值为1 - 27，含有N1、N2、N1 O 1、N1 O2、N1 O3、N1 O 4、O 1和O2杂原子类别。饱和馏分中没有分子可以被ESI电离。芳族馏分含有具有高分子量但低DBE值的N1和N1 Ox化合物。树脂和沥青质馏分含有高度芳族和酸性类物质，其富含分子量低于芳族馏分中发现的分子量的含氧和含氮化合物。胶质和沥青质中N1、N1 O 1和O 1类物种的分布模式相似。马.
A Liaohe crude oil was separated as saturates, aromatics, resins, and asphaltenes (SARA) and neutral nitrogen fractions. The crude oil and its subfractions were analyzed by negative-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The results show that neutral nitrogen and acidic heteroatom compounds in the crude oil contain 15−55 carbon atoms with double-bond equivalent (DBE) values of 1−27, containing N1, N2, N1O1, N1O2, N1O3, N1O4, O1, and O2 heteroatom classes. No molecules in the saturate fraction can be ionized by ESI. The aromatic fraction contains N1 and N1Ox compounds with high molecular weights but low DBE values. The resin and asphaltene fractions contain highly aromatic and acidic class species, which are enriched in oxygen- and nitrogen-containing compounds with lower molecular weights than those found in the aromatic fraction. The distribution patterns of N1, N1O1, and O1 class species in the resins and asphaltenes are similar. The ma...