A plausible reaction pathway of asphaltene under ultrasound

摘要: Abstract In an earlier report [Energy Fuels, 7 (1993) 111], the potential benefits of a refining process for heavy oil through chemical assisted ultrasound method at room temperature and ambient pressure were presented. Specifically, with effects cavitation added surfactant, within 15 min from original bitumen, 35% asphaltene was converted into gas resin fractions. The present investigation is continuous effort to provide more information about this conversion process, particularly studying role water during process. question be answered is: “To what degree participation hydrogen, which used result medium?” order trace fate hydrogen in medium, deuterium oxide chosen compare sodium borodeuteride borohydride as source reducing agent. Adopting nuclear magnetic resonance (NMR) tool, results tentatively concluded that both dehydrogenation cracking reactions occurred under ultrasound. It also observed, case medium without presence sources, principle reaction accompanied minor cracking. increases considerably only after introduced. Simultaneous are involved expanses naphthenic type pathway scheme.