Home – Home – Jornals – Chemistry for Sustainable Development 2023 number 3

High-molecular oil fractions exhibiting the initiating effect, nontypical for these oil objects, on the model reaction of cumene radical oxidation were investigated by means of microcalorimetry. It is shown for some objects that the initiators appear in the high-molecular fractions of oil in the course of their isolation from native oils by n-hydrocarbons. An insignificant correlation is established between the content of nickel, vanadium, and vanadylporphyrins and initiating activity. The initiators have been found in freshly isolated ‘acid resin’ fractions, which lose their initiating ability during storage due to chemical condensation processes. This method may be considered as a test for the content of inhibitors or initiators of radical oxidation in oil objects.