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

A. A. Grin'ko, A. K. Golovko

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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 1H and 13C 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.

Original languageEnglish
Pages (from-to)192-202
Number of pages11
JournalPetroleum Chemistry
Volume51
Issue number3
DOIs
Publication statusPublished - 1 May 2011
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Geochemistry and Petrology

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