Fractionation of resins and asphaltenes and investigation of their composition and structure using heavy oil from the Usa field as an example

Asphaltenes and resins of crude oil from the Usa oil field have been subjected to fractionation. The asphaltenes have been separated into fractions by fractional precipitation with chloroform/hexane solvent blends in the ratios of 30/70, 30/75, and 30/120. The resins have been fractionated by liquid...

Full description

Saved in:
Bibliographic Details
Published in:Petroleum chemistry 2011-05, Vol.51 (3), p.192-202
Main Authors: Grin’ko, A. A., Golovko, A. K.
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Chemistry
Chemistry and Materials Science
Chromatography
Industrial Chemistry/Chemical Engineering
Infrared spectroscopy
Investigations
Nuclear magnetic resonance spectroscopy
Oil fields
Precipitation (Meteorology)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Asphaltenes and resins of crude oil from the Usa oil field have been subjected to fractionation. The asphaltenes have been separated into fractions by fractional precipitation with chloroform/hexane solvent blends in the ratios of 30/70, 30/75, and 30/120. The resins have been fractionated by liquid adsorption chromatography on silica gel with hexane/benzene and hexane/ethanol mixed solvents taken in the ratios of 3/1, 1/1, and 10/1, 3/1, respectively. The obtained fractions have been analyzed by 1 H and 13 C nuclear magnetic resonance spectroscopy and infrared spectroscopy, their molecular masses have been measured, and the elemental composition has been investigated. On the basis of structuralgroup analysis data, the structures of the resin and asphaltene molecules have been hypothesized.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544111030066