“…When the temperature was above 180 °C, the cracking reaction rate increased; however, the coke generation rate also increased. Vakhin et al [ 9 ] found that the asphaltene content of heavy oil residue from the Elkhovsky oil refinery increased after catalytic oxidation at 250 °C by air with manganese dioxide (80 wt.%), iron dioxide, and silicon oxide. Nassar et al [ 10 , 11 , 12 , 13 , 14 , 15 , 16 ] adsorbed asphaltenes on nano-catalysts (e.g., CaO, Co 3 O 4 , Fe 3 O 4 , MaO, NiO, and PdO), and then their catalytic oxidation effect was investigated by thermogravimetric analysis at temperatures above 200 °C.…”