摘要
采用柱色谱和阴离子交换树脂法分离出两种北海高酸馏分油中的羧酸。采用红外光谱仪(IR)考察分离效果及羧酸类型,以NF3为反应气通过化学电离质谱(CIMS)分析所形成的羧酸,脂肪酸、一环及多环环烷酸负离子的结构与组成。结果表明,北海高酸馏分油中羧酸相对分子质量分布在170～678,碳数分布在C10～C47,其中双环环烷酸含量较高,与辽河原油的馏分油中羧酸分布明显不同。
The petroleum carboxylic acids in two distillates of North Sea crude oil were separated by the extraction with column chromatogram and anion exchange resin. The IR spectrometer was used to investigate the effect of separation and the type of carboxylic acids. The structure and the composition of the formed carboxylic acid, paraffinic acids, mono- and polycyclic naphthenic acids were identified by chemo-ionization mass spectrometer (CIMS). The results indicate that the molecular mass distribution of naphthenic acids in North Sea distillates is about 170-678, and the carbon number distribution is about C10-C47, in which, the content of dicyclic naphthenic acids is higher obviously different form those from Liaohe crude oils.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2004年第3期54-59,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
CIMS
环烷酸
阴离子交换
相对分子质量分布
碳数分布
Carboxylic acids
Ion exchange
Ionization
Mass spectrometry
Molecular weight distribution
Petroleum distillates
