摘要
采用碱醇溶液、氟里昂 -1 1 3溶剂萃取法分离出辽河原油 2 0 0～ 43 0℃馏分中的石油酸。通过红外光谱、快原子轰击电离质谱电离 ( FAB-MS)等方法对所分离出的石油酸进行检测 ,得到了有关环烷酸结构与组成的分析结果。研究表明 :辽河原油 2 0 0～ 43 0℃馏分中环烷酸分子量分布在 1 4 2～ 692 Da之间 ,碳数分布在 C8～ C48之间 ,其中单环、双环及三环环烷酸含量占石油酸总量的 80 %以上。
The petroleum carboxylic acids in distillates of Liaohe crude oil under 200~430 ℃ were separated by the extraction with alkali alcoholic solution and Freon 113 solvent .The relations to composition and structure of naphthenic acids were obtained by the use of IR and MS techniques. The result indicated that the molecular weight distribution of naphthenic acids in Liaohe distillates of 200~430 ℃ was about 142~692 Da, and the carbon number distribution was about C 8~C 48 . The contents of monocyclic ,bicyclic and tricyclic naphthenic acids were higher than others. A scientific and efficient method will be supplied for the further research in naphthenic acid corrosion and its mechanism related to geological chemistry.
出处
《质谱学报》
EI
CAS
CSCD
2004年第2期88-91,共4页
Journal of Chinese Mass Spectrometry Society
