Asphaltene is the most complex component of crude oil, consisting of various molecular
structures, eg, different molecular weights and number of rings per fused-ring system (or …

Asphaltenes, and their related issues, have been the focus of many literature investigations.
However, in-depth analysis of asphaltenes structure and its relation to asphaltenes stability …

Asphaltenes, complex aromatic compounds from various carbonaceous sources, could be
obtained by solvent dissolution, filtration and adsorption. It was difficult to clarify the …

Asphalthenes are typically defined as the fraction of petroleum insoluble in n-alkanes
(typically heptane, but also hexane or pentane) but soluble in toluene. This fraction causes …

Asphaltenes are a class of complex mixtures in petroleum fluids, which are defined as the
fraction in petroleum oils soluble in aromatic solvents, such as toluene, whereas insoluble in …

Asphaltenes have traditionally been viewed as being extremely complex, thus very hard to
characterize. In addition, certain fundamental properties of asphaltenes have previously …

The structure and transformation of fused aromatic ring system in asphaltenes play an
important role in the character of asphaltenes, and in step affect the properties of heavy oils …

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

An n-pentane asphaltene prepared from a Wilmington, California crude oil was separated
into fractions of acids, bases, neutral nitrogen compounds, saturate hydrocarbons, and …

Asphaltene is a component of crude oil that has been reported to cause severe problems
during production and transportation of the oil from the reservoir. It is a solid component of …