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Interrelation of Flocculation, Precipitation, and Structure of Asphaltene Fractions

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Chemistry and Technology of Fuels and Oils Aims and scope

Using asphaltenes of two heavy crude oils as examples, it is shown that the pattern of occurrence of asphaltene flocculation and precipitation processes concurs with the difference in the content of A1 and A2 asphaltene fractions and the structural peculiarities of these fractions. It is shown that flocculation and precipitation are usual for fraction A1, but not typical for fraction A2 at identical n-heptane/toluene ratio. The difference in the molecular structures of A1 from A2 consists in greater aromaticity, lower content of side alkyl chains and heteroatoms, and higher molecular weight.

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Authors and Affiliations

  1. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan, Russia

    L. M. Petrova, N. A. Abbakumova, D. N. Borisov, M. R. Yakubov, I. M. Zaidullin & G. V. Romanov

  2. Kazan Research Center, Russian Academy of Sciences, Kazan, Russia

    L. M. Petrova, N. A. Abbakumova, D. N. Borisov, M. R. Yakubov, I. M. Zaidullin & G. V. Romanov

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  1. L. M. Petrova
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  2. N. A. Abbakumova
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  3. D. N. Borisov
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  4. M. R. Yakubov
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  5. I. M. Zaidullin
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  6. G. V. Romanov
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Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 18 – 21, January – February, 2013.

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Petrova, L.M., Abbakumova, N.A., Borisov, D.N. et al. Interrelation of Flocculation, Precipitation, and Structure of Asphaltene Fractions. Chem Technol Fuels Oils 49, 25–31 (2013). https://doi.org/10.1007/s10553-013-0407-y

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  • DOI: https://doi.org/10.1007/s10553-013-0407-y

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