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Thermogravimetric studies on catalytic effect of metal oxide nanoparticles on asphaltene pyrolysis under inert conditions

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Abstract

This study investigated the catalytic effect of NiO, Co3O4 and Fe3O4 nanoparticles toward asphaltene thermal decomposition (pyrolysis) under inert conditions. Asphaltene adsorbed onto the selected nanoparticles were subjected to thermal decomposition up to 800 °C in a thermogravimetric analyzer. The presence of nanoparticles caused a significant decrease in the asphaltene decomposition temperature and activation energy. Activation energies for the process were calculated using the Ozawa–Flynn–Wall method. All the selected metal oxide nanoparticles showed high catalytic activity toward asphaltene decomposition in the following order NiO > Co3O4 > Fe3O4. This study confirms that metal oxide nanoparticles can significantly enhance the thermal decomposition of heavy hydrocarbons, like asphaltenes.

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Acknowledgements

Financial support provided by Carbon Management Canada, Inc. (CMC-NCE), a research network financed by the National Science and Engineering Research Council (NSERC), is gratefully acknowledged. The authors would like to thank Mr. AbdelLatif Eldood for providing asphaltene samples and Mr. German Luna for his help in performing some calculations.

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Authors and Affiliations

  1. Department of Chemical & Petroleum Engineering, University of Calgary, Calgary, AB, T2N 1N4, Canada

    Nashaat N. Nassar, Azfar Hassan & Pedro Pereira-Almao

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  1. Nashaat N. Nassar
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  2. Azfar Hassan
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  3. Pedro Pereira-Almao
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Correspondence to Nashaat N. Nassar.

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Nassar, N.N., Hassan, A. & Pereira-Almao, P. Thermogravimetric studies on catalytic effect of metal oxide nanoparticles on asphaltene pyrolysis under inert conditions. J Therm Anal Calorim 110, 1327–1332 (2012). https://doi.org/10.1007/s10973-011-2045-0

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  • DOI: https://doi.org/10.1007/s10973-011-2045-0

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