Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all
aspects of petroleum utilization, including reservoir characterization, production …

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

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 Yen–Mullins model, also known as the modified Yen model, specifies the predominant
molecular and colloidal structure of asphaltenes in crude oils and laboratory solvents and …

Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all
aspects of petroleum use, including production, transportation, refining, upgrading, and …

This biennial review discusses advances in the field of ambient sampling/ionization mass
spectrometry (“ambient MS” for short) in the period ranging from January 2009 to January …

Previously, asphaltene science had been hindered by many significant uncertainties
regarding molecular weight, molecular structure, and nanocolloidal characteristics in …

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 …

This review focuses on recent advances in instrumentation, techniques, and applications of
the highest resolution mass analyzers (multipass time of flight (TOF), orbitrap, and Fourier …

A Liaohe crude oil was separated as saturates, aromatics, resins, and asphaltenes (SARA)
and neutral nitrogen fractions. The crude oil and its subfractions were analyzed by negative …