文献类型：期刊文献

中文题名：风城稠油中石油酸组成结构分析

英文题名：COMPOSITIONS AND STRUCTURES OF PETROLEUM ACIDS IN FENGCHENG HEAVY CRUDE

作者：杨敬一[1];何萧[1];蔡海军[2];徐心茹[1]

机构：[1]华东理工大学化工学院,上海200237;[2]中国石油乌鲁木齐石化公司

年份：2017

卷号：48

期号：2

起止页码：106

中文期刊名：石油炼制与化工

外文期刊名：Petroleum Processing and Petrochemicals

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：国家自然科学基金资助项目(21376075)

语种：中文

中文关键词：石油酸;环烷酸;红外光谱;电喷雾质谱;核磁共振;稠油

外文关键词：petroleum acid; naphthenic acid; IR; ESI-MS; NMR; heavy crude

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。
Petroleum acids in Fengcheng heavy crude were separated by potassium hydroxide-ethanol aqueous solution extraction. The compositions and structures of petroleum acids were determined by elemental analysis, IR, NMR, ESI-MS, UV and Fluorescence Spectrum. The results show that the petroleum acid in Fengcheng heavy crude is mainly composed of dimers of mono-carboxylic acids with an average molecular weight of 665, the empirical formula is C43.51H78.4703.78 with a hydrogen-carbon mole ratio of 1.80. The contents of naphthenic acids and aliphatic acids occupy 79.84~ and 20. 16~, respectively. The contents of naphthenic acids with different structures（including 1--3 ring naphthenic acids, 4-ring naphthenic acids/aromatic carboxylic acids, 5-ring naphthenic acids/benzonaphthenic carboxylic acids with one ring, 6-ring naphthenic acids/benzonaphthenic carboxylic acids with 2-ring）are close to each other, ranging from 11.00 % to 18.88%. Trace amount of 3--4 ring aromatic in petroleum acids are also observed.