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Asphaltenes pp 131-154 | Cite as

A Unified View of the Colloidal Nature of Asphaltenes

  • Sócrates Acevedo
  • María A. Ranaudo
  • Gastón Escobar
  • Luis B. Gutiérrez
  • Xiomara Gutiérrez

Abstract

Asphaltenes, the high molecular weight component of crude oil is in reality a very complex mixture of compounds which exist in petroleum as a colloidal dispersion. Evidence presented here, together with information in the literature, suggest that these colloidal particles are a mixture of saturated, aromatic, resin, and asphaltene compounds. Presumably saturated and aromatic compounds are adsorbed (or absorbed) on the periphery of the particles due to the interfacial tension effect. As the center of the particle is approached, resins, polar compounds and asphaltenes are encountered. Analysis of the results suggests strongly that the core of the particle is insoluble (solubility <0.5 g L−1) in all solvents which dissolve the asphaltenes.

Keywords

Critical Micelle Concentration Interfacial Tension Unify View Asphaltene Precipitation Colloidal Nature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Sócrates Acevedo
    • 1
  • María A. Ranaudo
    • 1
  • Gastón Escobar
    • 1
  • Luis B. Gutiérrez
    • 1
  • Xiomara Gutiérrez
    • 1
  1. 1.Centro de Química Orgánica Escuela de Química, Facultad de CienciasUniversidad Central de VenezuelaCaracasVenezuela

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