I just have a question that's how aromatics like toluene and xylene can dissolve asphaltene, also the aromatics fraction in crude oil are playing a significant role in stabilizing asphaltene ( and in CII) by considering them a solvent for asphaltene, while the asphaltene is POLAR and aromatics are NON-POLAR ???
A lot of researchers are considering aromatics polar and on the other hand lots of them also considering aromatics as a non-polar component
1- if I considered aromatics in crude as a polar components, then how they're linked to the non-polar head of the resin ?
2- If I considered aromatics in crude as non-polar components, then how they're interacting with asphaltene, dissolving and dispersing asphaltene in the crude ?
Asphalthenes are soluble in toluene, xylene, DCM, THF. They are named polar but comparing to other components of crude oil. They are really low polarity compounds. They are mostly multi rings PAHs with peripherial groups. Check my paper on asphalthenes.
Regards
GB
I think, this question is more interesting. I can say, that asphaltenes are soluble in aromatics solvent, because they have unical colloidal properties. Aromatic solvents may dissolve polyaromatic molecules because p-p interactions, and delocalization electronic structure of this colloidal structure. Symmetrical molecules of solvent have equally dipole moment and don't displace or dislocate electronic balance of asphaltenes. There are a lot of papers about fractionation and solvatation of asphaltenes in different solvents. The nature of asphaltenes are related with their electronic structure.
Lenar Musin i was really waiting for something useful like that!
Can you recommend a paper for solvatation of asphaltene in aromatic solvents?
You can find some answers in our review.
Article Simple Methods for the Separation of Various Subfractions fr...
Asphaltenes are soluble in benzene, xylene, toluene, chlorobenzene, dichlorobenzene, nitrobenzene, pyridine, tetralin, bromobenzene, ethylbenzene, and aniline.