摘要：Molecular characterization of sulfur-containing compounds in petroleum is of great significance for not only the oil refining but also geochemical application. One practical approach for the characterization is to convert nonpolar sulfur compounds into methyl sulfonium with methyl iodide/AgBF4 and to analyze them by electrospray ionization high-resolution mass spectrometry. However, the derivatization requires a very long reaction time, which limits the wide application of this method. In this study, we proposed a new derivatization reagent, silver hexafluoroantimonate (AgSbF6), which can significantly reduce the reaction time. The method was validated by model sulfur compounds and successfully applied on the crude oil and diesel fraction. A comparison between AgBF4 and AgSbF6 was conducted to evaluate the advantages of this method. The new reagent provides a high conversion yield and low structural discrimination and, thus, can be used to characterize a trace amount of refractory sulfur compounds in deep hydrodesulfurization fuels. In addition, a quick methylation can be more useful for selective separations of thiophenes and sulfides from petroleum fractions than the methylation/demethylation method.
Copyright © 2020 American Chemical Society.

ISSN号：0887-0624

卷、期、页：v 34,n 9,p10842-10848

发表日期：2020-09-17

影响因子：3.421400

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Energy and Fuels

通讯作者：葛亚粉

第一作者：吴建勋,张亚和,梁咏梅,史权

论文类型：期刊论文

论文概要：葛亚粉,吴建勋,张亚和,梁咏梅,史权，Characterization of Sulfur-Containing Compounds in Petroleum Using AgSbF6as a Methylation Reagent，Energy and Fuels，2020，v 34,n 9,p10842-10848

论文题目：Characterization of Sulfur-Containing Compounds in Petroleum Using AgSbF6as a Methylation Reagent