Structural–Dynamic Phase Transitions in Petroleum Disperse Systems

Abstract

Using the techniques of proton nuclear magnetic resonance (¹H NMR) relaxometry and near-infrared spectroscopy, a multiextremun nature of dependencies of physicochemical properties, fractality, and quantization of changes in ¹H NMR parameters that determine phase transitions between types of petroleum disperse systems in the order: Hydrocarbons ⇔ Crude oil ⇔ Atmospheric residue ⇔ Vacuum residue ⇔ Asphalt ⇔ Carbenes ⇔ Coke, has been experimentally established. A model of structural–dynamic transitions, associated with a change in the intermolecular pair potential characterized by a number of minima is proposed.