The aggregation of petroleum asphaltenes has been studied for decades by numerous
experimental techniques, however, few studies had been performed on the special …

Significant differences exist in the structural features between coal-derived asphaltene and
petroleum asphaltene (eg, the degree of alkylation, aromatic nuclei size, heteroatom …

The structural characteristics and differences of coal tar and petroleum C7-asphaltenes were
studied, such as chemical composition, functional groups and molecular structure, using …

Understanding the nature of non-covalent interactions (NCIs) between asphaltene
molecules is not only theoretically interesting but also important for practical application. We …

The aggregation of asphaltenes has been established for decades by numerous
experimental techniques; however, very few studies have been performed on the …

Asphaltenes are a group of compounds that are soluble in benzene and toluene but
insoluble in nonpolar small molecule n-alkanes. The asphaltene aggregation in the …

The hydrogen-bonding strength of asphaltenes in Liaohe, Gudao, and Shengli vacuum
residues are studied using an in situ Fourier transform infrared (FTIR) technique. The …

The periodic molecular structure model of solvent-asphaltene system is constructed using
molecular mechanical and molecular dynamical methods. The influences of six kinds of …

Asphaltene stability can be perturbed during the oil production and transportation, leading to
asphaltene precipitation and deposition. Chemical inhibitors are usually added to the oil …

In order to understand the structure of asphaltene after its disaggregating by chemical
processing, a comprehensive study for exploring the structural changes of asphaltene after …