论文成果
Selective Methylation of Sulfides in Petroleum for Electrospray Ionization Mass Spectrometry Analysis
摘要:A method for selective methylation of sulfides (particularly aliphatic sulfides) but not thiophenes in petroleum has been developed for positive-ion electrospray ionization (ESI) mass spectrometry. The new method uses only CH3I without AgBF4 to produce methyl sulfonium ions of sulfides for molecular composition analysis. It provides simplicity and saves time compared to a previously developed methylation method using CH3I/AgBF4 to methylate all sulfur compounds into ionic species analyzable by positive-ion ESI. The composition of sulfides by this method agrees with that of the sulfide fraction obtained from CH3I/AgBF4 methylation/demethylation. Hence, the separation of sulfides from thiophenes through elaborate procedures is eliminated. The new method was validated by model compounds and has been successfully applied to the analysis of sulfides in diesel, vacuum gas oil, crude oil, and atmospheric pressure distillation residue. When combined with the previously developed CH3I/AgBF4 method, the new method may have the potential to differentiate reactive sulfur, such as sulfides, from nonreactive sulfur, such as thiophenes. This could provide a means to develop correlations between sulfur types and corrosion, and possibly for other studies.
关键字:SULFUR-COMPOUNDS CRUDE-OIL HEAVY PETROLEUM MOLECULAR CHARACTERIZATION FRACTIONS IDENTIFICATION ASPHALTENES SEPARATION RESOLUTION AROMATICS
ISSN号:0887-0624
卷、期、页:卷: 33 期: 3 页: 1797-1802
发表日期:2019-03-01
影响因子:3.091000
期刊分区(SCI为中科院分区):二区
收录情况:SCI(科学引文索引印刷版),ESI(基本科学指标数据库),SCIE(科学引文索引网络版)
发表期刊名称:Energy and Fuels
参与作者:许强
通讯作者:李海栋,陈秀,吴建勋
第一作者:张亚和,刘旭霞,史权,赵锁奇,徐春明
论文类型:期刊论文
论文概要:李海栋,陈秀,吴建勋,张亚和,刘旭霞,史权,赵锁奇,徐春明,许强,Selective Methylation of Sulfides in Petroleum for Electrospray Ionization Mass Spectrometry Analysis,Energy and Fuels,2019,卷: 33 期: 3 页: 1797-1802
论文题目:Selective Methylation of Sulfides in Petroleum for Electrospray Ionization Mass Spectrometry Analysis