Development and application of two-dimensional liquid chromatography for the analysis of polycyclic aromatic sulfur heterocycles in heavy oil

被引：0

作者：

Song Chunxia ^{[1
]}

Wang Wei ^{[1
]}

Liu Zelong ^{[1
]}

Liu Yingrong ^{[1
]}

Cai Xinheng ^{[1
]}

机构：

[1] SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China

来源：

CHINESE JOURNAL OF CHROMATOGRAPHY | 2019年 / 37卷 / 07期

关键词：

two-dimensional liquid chromatography (2D LC); Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS); polycyclic aromatic hydrocarbons (PAHs); poly-cyclic aromatic sulfur heterocycles (PASHs); heavy oil; PETROLEUM; SEPARATION;

D O I：

10.3724/SP.J.1123.2019.01014

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A two-dimensional liquid chromatographic (2D LC) system was developed for the analysis of polycyclic aromatic sulfur heterocycles (PASHs) in heavy oil. The first dimension is a ligand-exchange chromatographic column packed with a palladium chloride/silica (PdCl2SiO2) stationary phase, while the second dimension is a Spherisorb-NH2 column. The PASHs in vacuum gas oil were enriched online, and polycyclic aromatics hydrocarbons (PAHs) were separated according to their aromatic ring numbers. These separated fractions were analyzed by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), and detailed molecular characterization of PASHs and PAHs was achieved. Typical molecular structures of PASHs and PAHs in these fractions could be provided, and the side chain as well as the core structures were predicted. It is significant for the feedstocks selection and optimization of the hydrodesulfurization process by using these molecular characterization information.

引用

页码：750 / 758

页数：9

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