Study of Resin Adsorption onto Asphaltene and Silica-Asphaltene Particles

Abstract

We present a methodology to study the adsorption behavior of resins on asphaltenes, which we call silica-asphaltene complex methodology (SACOM), and compare it to a methodology regularly used by many researchers (Acevedo et al., 1995; González et al., 2003; León et al., 2002; Marczewski et al., 2002; Pereira et al., 2007) that we call traditional methodology. Three isotherms of resins adsorbed on the complex substrates (asphaltene and its colloidal fractions A₁ and A₂ adsorbed on silica) were built, analyzed, and then compared with two isotherms built by applying a traditional methodology where resins were adsorbed on two organic substrates: asphaltene and its fraction A₁.

Keywords:

• adsorption
• asphaltene
• resins

ACKNOWLEDGMENTS

This work was financially supported by Universidad de Carabobo and El Consejo de Desarrollo Científico y Humanístico de la Universidad de Carabobo, Venezuela.