Influence of the association of organic sulfur compounds with aromatic hydrocarbons on the resistance of oil to oxidation

Abstract

1. Changes in the adsorption capacity of organic sulfur compounds with respect to silica gel, with change in concentration and chemical structure of hydrocarbons contained in the oil, points to the formation of associations composed of aromatic hydrocarbons and organic sulfur compounds. 2. Periodic weakening of the antioxidizing properties of sulfur-containing oils with addition of polycycllc aromatic hydrocarbons points to the fact that in sulfurous oils, the antioxidizing functions are performed by associated systems containing aromatic hydrocarbons and organic sulfur compounds. 3. The composition of micelles having antioxidizing properties is not constant and is a function of the concentration and chemical structure of their components. Increase in the aromatic hydrocarbon concentration with the concentration of organic sulfur compounds being constant, at first, results in the growth of micelles and later in their disintegration. In conformity with the change in composition and concentration of antioxidant micelles, the stability of the oil also changes.