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Inverse Gas Chromatographic Study of the Oxidation Stability of Lubricating Base Oils via Solubility Parameter Calculations

MOUSTAFA Nagy Emam, EISSA Elham Ahmed

  

  1. Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
  • 收稿日期:2007-06-15 修回日期:1900-01-01 出版日期:2007-11-30 发布日期:1984-12-25
  • 通讯作者: MOUSTAFA Nagy Emam

Inverse Gas Chromatographic Study of the Oxidation Stability of Lubricating Base Oils via Solubility Parameter Calculations

MOUSTAFA Nagy Emam, EISSA Elham Ahmed   

  1. Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
  • Received:2007-06-15 Revised:1900-01-01 Online:2007-11-30 Published:1984-12-25
  • Contact: MOUSTAFA Nagy Emam

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摘要：

The Flory-Huggins interaction parameter (χ∞1,2) and solubility parameter (δ2) and its hydrogen bonding sensing component (δh) were determined using inverse gas chromatography (IGC). These parameters were successfully used in the probes of chemical changes that occur during the oxidation of naphthenic and paraffinic base oils in a GC column. Changes in χ∞1,2 values reflect the different types of intermolecular interactions (dispersive, polar, hydrogen bonding) of the given lubricating base oil during oxidation. The obtained results showed that δh component of solubility parameter is the most important parameter for probing the oxidative-chemical changes during the oxidation of given lubricating oils.

关键词: lubricating naphthenic base oil, oxidation , inverse gas chromatography

Abstract: The Flory-Huggins interaction parameter (χ∞1,2) and solubility parameter (δ2) and its hydrogen bonding sensing component (δh) were determined using inverse gas chromatography (IGC). These parameters were successfully used in the probes of chemical changes that occur during the oxidation of naphthenic and paraffinic base oils in a GC column. Changes in χ∞1,2 values reflect the different types of intermolecular interactions (dispersive, polar, hydrogen bonding) of the given lubricating base oil during oxidation. The obtained results showed that δh component of solubility parameter is the most important parameter for probing the oxidative-chemical changes during the oxidation of given lubricating oils.

Key words: lubricating naphthenic base oil, oxidation , inverse gas chromatography