Journal
CATALYSIS TODAY
Volume 207, Issue -, Pages 127-132Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2012.04.054
Keywords
Asphaltenes; Nanoparticles; Activation energy; Oxide
Funding
- Carbon Management Canada, Inc. (CMC-NCE)
- National Science and Engineering Research Council (NSERC)
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Thermogravimetry analyses have been employed to study the catalytic effect of different metal oxide nanoparticles on the thermo-oxidative decomposition of asphaltenes at isothermal conditions. Three metal oxide nanoparticles were considered in this study, namely: NiO, Co3O4 and Fe3O4. Results showed that the presence of nanoparticles decreased the activation energy of asphaltenes oxidation and enhanced the reaction rate. It appears that the thermo-oxidative reaction is metal oxide specific. The obtained kinetic data showed that NiO has the highest reaction rate followed by Co3O4 and then Fe3O4, which suggests a change in the reaction mechanism. (C) 2012 Elsevier B. V. All rights reserved.
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