石油化工高等学校学报

石油化工高等学校学报 ›› 2007, Vol. 20 ›› Issue (4): 13-15.

• 石油化工 • 上一篇    下一篇

CI-MS法检测渣油中的石油酸

吕振波1, 陈庆岭2, 李 倩1, 王学勤3   

  1. 1.辽宁石油化工大学石油化工学院,辽宁抚顺113001;
    2.北京石油化工科学研究院,北京100083;
    3.抚顺市产品质量监督检验所,辽宁抚顺113006
  • 收稿日期:2007-01-03 出版日期:2007-12-20 发布日期:2017-06-28
  • 作者简介:吕振波(1964-),男,辽宁抚顺市,教授,博士
  • 基金资助:
    国家自然基金资助项目(20371024

Determination of Petroleum Acids in Vacuum Residue by CI-MS

L Zhen-bo1, CHEN Qing-ling2, LI Qian1, WANG Xue-qin3   

  1.  
    1. School of Petrochemical Engineering, Liaoning University of Petroleum and Chemical Technology, Fushun Liaoning 113001,P.R.China;
    2.Beijing Research Institute of Petroleum Processing, Beijing 100083,P.R.China; 
    3.Fushun Production Quality Supervision and Checking Center, Fushun Liaoning 113006,P.R.China
  • Received:2007-01-03 Published:2007-12-20 Online:2017-06-28

摘要: 采用柱色谱和阴离子交换树脂法分离渣油馏分中的羧酸,通过红外光谱仪检验分离出的羧酸类型。
将石油酸和异丁烷反应气引入到离子源进行化学电离(CI)-质谱(MS)法分析,这些离子可以用来计算石油酸的相
对分子质量。以纯脂肪酸、环烷酸以及分离出的石油酸的CI质谱数据为基础,并结合环烷酸z 系列通式CnH2n+zO2
分别得到了不同碳数的脂肪酸、一环、二环……六环环烷酸的分析结果。结果表明,渣油中的羧酸主要是环烷酸,相
对分子质量分布在198~540,碳数分布在C12~C37,其中三环、四环环烷酸含量较高。

关键词: 渣油   , CI-MS  ,   , 石油酸 ,  ,  碳数分布

Abstract: he petroleum carboxylic acid in vacuum residue distillates of crude oil was separated by the extraction with column chromatogram and anion exchange resin.Composition and structure of naphthenic acids were obtained by the use of IR techniques. Petroleum acids with iso-butane reagent gas was introduced to ion source that can be ionized by chemical ionization(CI)-mass spectrometer(MS). These ions can be used to calculate the molecular mass for each acid as previously described. Based on mass spectrum of pure fatty and naphthenic acid and combined with z-series formula CnH2n+zO2.The type of naphthenic acids can be classified into fatty, mono- ,bi- …hexa-cyclic according to their mass spectrum and data. The results indicate that naphthenic acid is the main composition of vacuum residue and the molecular weight distribution of petroleum acids in this distillate is about 198~540,and the carbon number distribution is about C12~C37.The contents of tri-cyclic and tetra-cyclic naphthenic acids are higher than others.

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引用本文

吕振波, 陈庆岭, 李 倩, 王学勤. CI-MS法检测渣油中的石油酸[J]. 石油化工高等学校学报, 2007, 20(4): 13-15.

L Zhen-bo, CHEN Qing-ling, LI Qian, WANG Xue-qin. Determination of Petroleum Acids in Vacuum Residue by CI-MS[J]. Journal of Petrochemical Universities, 2007, 20(4): 13-15.

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