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The Impact of Basic Nitrogen Compounds on the Oxidative and Thermal Stability of Base Oils in Automotive and Industrial Applications
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Abstract
Nitrogen compounds present in mineral base oils at low concentrations are known to accelerate oil oxidation and to reduce the useful lifetime of formulated lubricants. Both Partial Least Squares and Neural Network analyses were employed to establish correlations between base oil composition and performance in industry standard thermal stability and oxidation tests. These correlations show that the “basic nitrogen” (BN) content of a base oil is a very important compositional feature determining its ultimate performance in a formulated lubricant which may be especially important for API Group II and III base oils that are relatively free of other pro-oxidants and naturally occurring, sulfur-containing antioxidants. The effect of BN species was also studied using model nitrogen compounds and it was confirmed that the pro-oxidant effect appears only in “basic” nitrogen containing molecules involving pyridine and quinoline derivatives.
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Citation
Yoshida, T., Igarashi, J., Watanabe, H., Stipanovic, A. et al., "The Impact of Basic Nitrogen Compounds on the Oxidative and Thermal Stability of Base Oils in Automotive and Industrial Applications," SAE Technical Paper 981405, 1998, https://doi.org/10.4271/981405.Also In
References
- Adam P.S. “Base Oil Gambits” Lubes-n-Greases 3 11 31 34 November 1997
- “1995 Lubricating Oil and Wax Capacities of US and Canadian Refineries”
- Yoshida T. Igarashi J. Watanabe H. “Pro-Oxidant Properties of Basic Nitrogen Components in Base Oils” 11 th International Colloquium Tribology Esslingen, Germany January 1998
- Mooken R.T. Saxena D. Basu B. Satapathy S. Srivastava S.P. Bhatnagar A.K. “Dependence of Oxidation Stability of Steam Turbine Oil on Base Oil Composition” Lubrication Engineering 19 24 October 1997
- Stipanovic Smith M. P. Firmstone G.P. Patel J.A. “Compositional Analysis of Re-Refined and Non-Conventional Lubricant Base Oils: Correlations to Sequence VE and IIIE Gasoline Engine Tests” SAE 941978 1994
- Firmstone G.P. Smith M. P. Stipanovic A.J. “A Comparison of Neural Network and Partial Least Squares Approaches in Correlating Base Oil Composition to Lubricant Performance in Gasoline Engine Tests and Industrial Oil Applications” SAE 952534 1995
- Stipanovic A.J. Smith M. P. Firmstone G.P. “Having Fun with Base Oils: Predicting Properties Using Neural Networks” Petroleum Preprints 42 1 284 286 1997