Study of Resin Adsorption onto Asphaltene and Silica-Asphaltene Particles

摘要

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; Gonzalez et al., 2003; Le6n 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 A_1 and A_2 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 A_1.