Asphaltenes are heteroatom rich macromolecules thought to be mainly derived from the
early breaking of covalent bonds in kerogen and thus have been considered to be a lower …

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

In this work several issues related to asphaltenes and asphaltene aggregates such as
isolation of real asphaltene molecules and comparison of these with average structures …

The complex of physicochemical methods of analysis (elemental analysis, cryoscopy in
benzene, IR and 1H NMR spectroscopies, structural group analysis, gas chromatography …

Asphaltenes, which comprise polycyclic aromatic hydrocarbon cores with attached short
aliphatic side chains, are the most polar fraction of crude oils. Asphaltenes are prone to …

In this contribution, we use high-resolution mass spectrometry to unveil the molecular
composition of occluded compounds inside Colombian asphaltenes macrostructures. We …

Within geomacromolecules, such as kerogen, asphaltene, and solid bitumen, other
compounds can be adsorbed and even occluded as free molecules. The occluded …

The asphaltene aggregates are made of a well-packed and stable in benzene (toluene)
solution core and a loose-packed periphery, which can respectively occlude and adsorb the …

In response to the Deepwater Horizon oil spill, critical research has tracked the changes in
petroleum hydrocarbons with environmental weathering. There are limitations, however …

Asphaltene-trapped (adsorbed or occluded) biomarkers are considered a valid source of
information for crude oil with severe secondary alterations. However, thermal stress might …