Affiliation:
1. Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences
Abstract
Dynamic thermogravimetry was used to study the thermal degradation of the oil residue of Usinskaya oil and its saturated, aromatic, resin, and asphaltene (SARA) fractions in the presence of sunflower oil. Thermolysis experiments were carried out in an atmosphere of pure argon. Based on the data of thermogravimetric analysis, the activation energies of the thermal degradation of the oil residue, resins, asphaltenes, saturated and aromatic hydrocarbons, and their mixtures with sunflower oil were calculated in the temperature range of a maximum weight loss rate. It was shown that the addition of 10.0 wt % sunflower oil to the oil residue and its components led to a decrease in the activation energy. This fact indicates that the sunflower oil additive affected the mechanism of thermal degradation of crude oil and its components. The greatest change in the activation energy was observed for asphaltenes: ΔЕа = 48.4 kJ/mol.
Publisher
The Russian Academy of Sciences