Desorption and Ionization of Heavy Petroleum Molecules

摘要

The trend of the world petroleum supply is evolving toward high gravity,high boiling,low solubility and rich heteroatom materials.Effective production and processing of heavy hydrocarbons presents enormous challenges.Characterization of petroleum composition by mass spectrometry also becomes increasingly difficult as boiling point increases.Average molecular weight (Mn/Mw)and molecular weight distribution (MWD)of heavy petroleums and asphaltenes are important parameters that are used to deduce average petroleum structures,predict fouling and incompatibility and various physical and performance properties.