Isolation and characterization of natural surfactants from extra heavy crude oils, asphaltenes and maltenes. Interpretation of their interfacial tension-pH behaviour in terms of ion pair formation
Natural surfactants (NS) have been isolated from extra heavy crude oils and from their asphaltene and maltene fractions. The elemental analyses and molecular weight (M,) properties and the molecular weight distribution (MWD), as well as the interfacial tension (y) behaviour (toluene solutions) with...
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| Publicado: |
2015
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| Acceso en línea: | http://hdl.handle.net/10872/11555 |
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