This paper passes over the literature for residual oil characterization. The methods for
residual oil characterization are classified in: characterization based on physical and …

For decades, discussion of asphaltene structure focused primarily on molecular weight. Now
that it is widely accepted that asphaltene monomers are between∼ 250 and 1200 g/mol …

The components of petroleum asphaltenes exhibit complex bridged structures comprising
sulfur, nitrogen, aromatic, and naphthenic groups linked by alkyl chains. These components …

As the formation of asphaltene aggregates causes its deposition in various processes, exact
determination of the molecular and aggregate structure and mechanism of aggregate …

Asphaltene structure is one of the most controversial topics in petroleum chemistry. The
controversy is centered on the organization of aromatic cores within asphaltene molecules …

The molecules in petroleum asphaltenes follow a molecular structure continuum similar to
the rest of the oil but differ in the formation of nanoaggregates in solution. The nature of the …

Molecular characterization of asphaltenes by conventional analytical techniques is a
challenge because of their compositional complexity, high heteroatom content, and …

Alkanes and polycyclic aromatic hydrocarbons (PAHs) have threatened the environment
due to toxicity and poor bioavailability. Interest in degradation of these hazardous materials …

Asphaltenes have traditionally been conceived as highly aromatic, alkyl-deficient
compounds enriched in pericondensed aromatic “island” motifs. This structural definition …

Asphaltenes and maltenes are defined operationally by solubility (in, eg, heptane).
Asphaltenes self-associate in solution and form putative nanoaggregates composed of …