Petroleum Chemistry

, Volume 59, Issue 11, pp 1195–1200 | Cite as

Effect of Nitrogen Bases on the Structure of Primary Asphaltene Clusters and Dynamics of Aggregation of Heavy Oil Fractions

  • Yu. V. LarichevEmail author
  • E. Yu. Kovalenko
  • O. N. Mart’yanov


Using the method of small-angle X-ray scattering (SAXS), the effect of nitrogen-containing compounds on the structure of primary asphaltene clusters and changes in their structure and size characteristics has been studied. It has been shown that the addition of nitrogen bases leads to a partial degradation of the primary aggregates of asphaltenes and the appearance of a larger number of disordered “non-compact” fragments in the solution, thereby altering the dynamics of the entire aggregation process. Nitrogen bases also provoke a change in the type of packing of the primary particles of asphaltenes, facilitating the formation of a looser secondary structure of asphaltene aggregates.


asphaltenes small-angle X-ray scattering nitrogen-containing petroleum bases supramolecular structure 



The study was supported by the Russian Science Foundation, project no. 15-19-00119.


The authors declare that they have no conflict of interest.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Yu. V. Larichev
    • 1
    • 2
    Email author
  • E. Yu. Kovalenko
    • 3
  • O. N. Mart’yanov
    • 1
    • 2
  1. 1.Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of SciencesNovosibirskRussia
  2. 2.Novosibirsk National Research State UniversityNovosibirskRussia
  3. 3.Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of SciencesTomskRussia

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