Spectroscopic characterization of solvent soluble fractions of petroleum vacuum residues

B. K. Sharma, O. S. Tyagi, M. K.S. Aloopwan, S. D. Bhagat

Research output: Contribution to journalArticlepeer-review


NMR and FTIR spectroscopic techniques were used to investigate the effect of different solvent extraction schemes on the composition and chemical nature of species of vacuum residues of two Indian crude oils (namely Jodhpur and Heera) extractable into polar (ethyl acetate) and non-polar (n-pentane and n-heptane) solvents. The obtained soluble fractions were found to consist of mainly simple aliphatic and naphthenic ring structures, while insoluble fractions consisted primarily aromatic compounds. The results were used to draw inferences on the relative utility of different extraction schemes to upgrade vacuum residues as feedstocks for secondary conversion processes in petroleum industry.

Original languageEnglish (US)
Pages (from-to)249-272
Number of pages24
JournalPetroleum Science and Technology
Issue number3
StatePublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Geotechnical Engineering and Engineering Geology


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