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Comparative Oxidation of Adsorbed Asphaltenes onto Transition Metal Oxide Nanoparticles

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Mon, 2014-05-19 12:46 — Nashaat N. Nassar
Journal Title, Volume, Page: 
Colloids and Surfaces A: Physicochemical and Engineering Aspects Volume 384, Issues 1–3, Pages 145–149
Year of Publication: 
2011
Link: 
http://www.sciencedirect.com/science/article/pii/S0927775711002238
Authors: 
Nashaat N. Nassar
Alberta Ingenuity Centre for In-Situ Energy, Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta, Canada
Current Affiliation: 
Department of Chemical Engineering, Faculty of Engineering and Information Technology, An-Najah National University, Nablus, Palestine
[email protected]
Azfar Hassan
Alberta Ingenuity Centre for In-Situ Energy, Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta, Canada
Pedro Pereira-Almao
Alberta Ingenuity Centre for In-Situ Energy, Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta, Canada
Preferred Abstract (Original): 

In this study asphaltenes – waste hydrocarbons and problematic constituent present in heavy oil – have been investigated for its oxidation onto different types of nanoparticles, namely NiO, Co3O4 and Fe3O4. All nanoparticles tested showed high adsorption affinity and catalytic activity for asphaltene adsorption and oxidation in the following order NiO > Co3O4 > Fe3O4. The oxidation temperature of asphaltenes decreased by 140, 136 and 100 °C with respect to non-catalytic oxidation in the presence of NiO, Co3O4, and Fe3O4nanoparticles, respectively. A correlation appears to exist between the adsorption affinity and the catalytic activity, the higher the affinity the greater the catalytic activity.

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