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Petroleum Chemistry

, Volume 58, Issue 12, pp 1099–1106 | Cite as

Distribution of Paraffin Hydrocarbons and Asphaltenes in Acidic Water-Oil Emulsion

  • Yu. M. GaneevaEmail author
  • E. E. Barskaya
  • E. S. Okhotnikova
  • T. N. Yusupova
  • L. F. Davletshina
  • I. A. Gus’kova
Article
  • 25 Downloads

Abstract

Asphaltenes and solid paraffins isolated from various layers of acidic water-oil emulsions obtained by mixing an oilfield emulsion with 15% solutions of hydrochloric and sulfamic acids with or without addition of Fe(III) have been studied by elemental analysis, IR and EPR spectroscopy, gas–liquid chromatography, and calorimetry. In acidic water-oil emulsions, the high-molecular-weight petroleum components have not been found to concentrate at the oil/water interface; however, a change in their composition has been revealed, which is more pronounced in the presence of Fe(III). The formation of diamagnetic complexes of the paramagnetic centers of asphaltenes with Fe(III) has been detected.

Keywords:

asphaltenes acidic water–oil emulsions diamagnetic complexes 

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • Yu. M. Ganeeva
    • 1
    • 2
    Email author
  • E. E. Barskaya
    • 1
    • 2
  • E. S. Okhotnikova
    • 1
    • 2
  • T. N. Yusupova
    • 1
    • 2
  • L. F. Davletshina
    • 3
  • I. A. Gus’kova
    • 4
  1. 1.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of SciencesKazanRussia
  2. 2.Institute of Geology and Oil and Gas Technologies, Kazan State UniversityKazanRussia
  3. 3.Gubkin Russian State University of Oil and GasMoscowRussia
  4. 4.Almet’evsk State Institute of PetroleumAlmet’evskRussia

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