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Separation of Aromatic Sulfur Compounds in Petroleum Samples by on-Column Methylation Combined With Potassium Iodide Modified Silica Gel Reduction

摘要:A novel approach was developed for separating petroleum aromatic sulfur-containing compounds (ASCs) using a new technique of on-column methylation combined with potassium iodide modified silica gel reduction. A solid-phase extraction column was prepared by packing diatomaceous earth loaded with silver hexafluoroantimonate, which facilitated rapid methylation of sulfur-containing compounds and enrichment of methylsulfonium salts. Subsequently, the aromatic methylsulfonium salts were efficiently reduced by potassium iodide-modified silica gel, thus obtaining ASCs of high purity. The method was validated by model compounds, and applied to treat diesel and crude oil samples. The separated fractions were analyzed by gas chromatography coupled with a sulfur chemiluminescence detector (GC-SCD) and gas chromatography-mass spectrometry (GC-MS). The analysis of model compounds demonstrates that the recovery rate of this method for dibenzothiophene compounds including shielded structures can reach 95%. Moreover, the analytical results from the petroleum samples have confirmed that the method can realize high-purity separation of various types of ASCs, and this operation is simple and quick. 漏 2024 Editorial Office of Acta Petrolei Sinica. All rights reserved.

ISSN号:1001-8719

卷、期、页:v 40,n 3,p784-790

发表日期:2024-05-01

收录情况:EI(工程索引)

发表期刊名称:Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section)

通讯作者:李硕凡,程海洋

第一作者:吴建勋,张未来,张亚和,史权

论文类型:期刊论文

论文概要:吴建勋,李硕凡,程海洋,张未来,张亚和,史权,Separation of Aromatic Sulfur Compounds in Petroleum Samples by on-Column Methylation Combined With Potassium Iodide Modified Silica Gel Reduction,Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section),2024,v 40,n 3,p784-790

论文题目:Separation of Aromatic Sulfur Compounds in Petroleum Samples by on-Column Methylation Combined With Potassium Iodide Modified Silica Gel Reduction

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