摘要：Molecular characterization of olefins in the complex hydrocarbon mixture is of vital importance for the various hydrocarbon upgrading processes. According to the strong interaction of Ag+ with unsaturated hydrocarbon, Ag+ complexation was adopted in this study as a tool to achieve selective olefin ionization in electrospray ionization (ESI). High-resolution mass spectrometry (HR MS) was used to characterize ionized olefin molecular composi-tion. Various model compounds, including paraffins, naphthenes, olefins, and aromatics, were used to verify the ionization selectivity. The observed olefin carbon number distribution from Ag+ complexation ESI HR MS was in agreement with those from gas chromatography-mass spectrometry equipped with the electron impact ion source (GC-EI-MS). The proposed method can be conveniently used for direct molecular characterization of olefins in mixtures without time-consuming olefin pre-separation or chemical derivatization. Olefins in coker diesel, coal tar liquid, and Fischer-Tropsch wax were successfully analyzed by the proposed method.

关键字：Olefin; Ag+ complexation; Electrospray ionization; High-resolution mass spectrometry; Hydrocarbon mixtures

ISSN号：0016-2361

卷、期、页：卷: 319

发表日期：2022-07-01

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：张莹,黄琛,孔繁格

第一作者：王彧斐,史权,张霖宙

论文类型：期刊论文

论文概要：张莹,黄琛,孔繁格,王彧斐,史权,张霖宙，Selective molecular characterization of olefins in hydrocarbon mixtures by Ag+ complexation ESI high-resolution mass spectrometry，FUEL，2022，卷: 319

论文题目：Selective molecular characterization of olefins in hydrocarbon mixtures by Ag+ complexation ESI high-resolution mass spectrometry