摘要：The sulfur removal chemistry is critical to the efficient conversion of heavy oils. The compositions and HDS reactivities of sulfur-containing compounds in two deasphalted oils were systematically investigated by elec-trospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) combined with a self-established separation method. The deasphalted oils are separated into three subfractions by a combination of methylation/demethylation and solvent extraction. The S1 class sulfur compounds with low and high DBE (double bond equivalent) values dominated the sulfidic and thiophenic subfractions, respectively, while polyheteroatomic compounds are the major components in the polar subfractions. Three sulfur sub-fractions exhibited different reactivities under the same hydrotreating conditions. The sulfidic and thiophenic subfractions have similar HDS reactivities, and the sulfur species with low and high DBE values are preferentially removed from the above subfractions, respectively. Sulfur compounds in the polar subfractions are the least reactive species, resulting from the existed unreactive sulfur components and the inhibition of polyaromatics and nitrogen-containing compounds. This study represents an advance in unraveling the complex desulfurization chemistry in heavy oils, and facilitates the development of superior hydrodesulfurization catalysts.

关键字：Hydrodesulfurization chemistry; FT-ICR MS; Sulfur subfractions; Hydrodesulfurization reactivity

ISSN号：0016-2361

卷、期、页：卷: 328

发表日期：2022-11-15

影响因子：6.608900

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：FUEL

通讯作者：王源丰,王博,蒋涛,于佳欢,杨浩轩

第一作者：陈振涛,吴建勋,赵锁奇,史权,徐春明

论文类型：期刊论文

论文概要：陈振涛,王源丰,吴建勋,王博,蒋涛,于佳欢,杨浩轩,赵锁奇,史权,徐春明，Composition of sulfur species in deasphalted oils and their molecular-level transformation during the hydrotreating process，FUEL，2022，卷: 328

论文题目：Composition of sulfur species in deasphalted oils and their molecular-level transformation during the hydrotreating process