风城稠油中石油酸组成结构分析

发布时间：2018-06-25 03:49

本文选题：石油酸 + 环烷酸　；参考：《石油炼制与化工》2017年02期

【摘要】：由氢氧化钾-乙醇水溶液分离风城稠油中的石油酸,结合元素分析、红外光谱(FT-IR)、核磁共振(NMR)、电喷雾质谱(ESI-MS)、紫外光谱(UV-Vis)和荧光色谱等方法分析其结构组成。结果表明:风城稠油所含石油酸主要是一元羧酸二聚体,平均相对分子质量为665,平均分子式为C43.51H78.47O3.78,氢碳原子比为1.80;各类酸分布范围较广,其中,环烷酸含量最高,占79.84%,脂肪酸次之,占20.16%;环烷酸中一环环烷酸、二环环烷酸、三环环烷酸、四环环烷酸/芳环羧酸、五环环烷酸/芳环并一环羧酸和六环环烷酸/芳环并二环羧酸的含量相当,均在11.00%~18.88%之间。此外,还检测到微量3~4环的芳香结构物质。
[Abstract]:The composition of petroleum acids in Fengcheng heavy oil was separated from the solution of potassium hydroxide and ethanol water, combined with elemental analysis, infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS), ultraviolet spectroscopy (UV-Vis) and fluorescence chromatography. The results showed that the petroleum acids in Fengcheng heavy oil were mainly two polymer of the monocarboxylic acid. The sub mass is 665, the average molecular formula is C43.51H78.47O3.78, the ratio of hydrogen to carbon atom is 1.80, and the range of various acids is wide, among which, naphthenic acid is the highest, 79.84%, fatty acid, 20.16%, and cyclic naphthenic acid, dicyclic naphthenic acid, tricyclic acid, four cyclic acid / aromatic ring carboxylic acid, five cyclic naphthenic acid / aromatic ring and one ring carboxylic acid in naphthenic acid. Six the content of cyclo naphthenic acid / aryl bicyclic dicarboxylic acid is equal to 11.00%~18.88%, and the aromatic structure of trace 3~4 ring is also detected.
【作者单位】：华东理工大学化工学院;中国石油乌鲁木齐石化公司;
【基金】：国家自然科学基金资助项目(21376075)
【分类号】：TE622

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