Comparing Asphaltene Adsorption with Model Heavy Molecules over Macroporous Solid Surfaces
2006; American Chemical Society; Volume: 21; Issue: 1 Linguagem: Inglês
10.1021/ef060196+
ISSN1520-5029
AutoresManuel F. González, Clementina Sosa Stull, Francisco López-Linares, Pedro Pereira‐Almao,
Tópico(s)Hydrocarbon exploration and reservoir analysis
ResumoThe adsorption behavior of Athabasca bitumen C7 asphaltene (AB-C7-A) over a macroporous silica−alumina, kaolin, at room temperature is described by comparison with three model molecules such as Xylenol Orange (amine modified, XYO), Violanthrone-78 (VO-78), and Violanthrone-79 (VO-79). The results show that adsorption uptake at equilibrium of these model molecules is independent up to a certain initial concentration limit on the structure, the nature, and the total content of heteroatoms present. The final uptake and the dynamics of the adsorption seem to be more determined by the nature and specific content of heteroatoms, which allow them to interact stronger and faster with the macroporous solid surface.
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