In Situ FT-IR Study on the Association of Asphaltene Molecule

摘要

As commonly views, the basic structure of the asphaltene molecule in residues is that the desened aromatic rings is the core, many naphthene rings are jointed around it, and many straight alkyl chains in different length are jointed on the aromatic rings and naphthene rings, many groups containing S,O,N and some metal as V and Fe also exist in the molecule. This basic structure of asphaltene molecule is called a "cell structure". From a lot of researches we can infered that, asphaltene molecule is make up of several "cell structures" like this, and the molecular weight of asphaltenes is different while the solvent varying, the molecular weight obtained in low-pole solvent is bigger than that obtained in high-pole solvent.