Estimating methyl/methylene groups in asphaltene and other fractions of asphalt

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3 Scopus citations

Abstract

Infrared is the most widely used analytical method for interpreting the structure of petroleum fractions. In this study, IR spectra of standard normal nonadecane were used to get ε for methyl and methylene groups. A linear relationship was obtained by plotting the peak intensities at 2,954, 2,926, 2,854, 1,466, and 1,376 cm-1 against different amounts of N-nonadecane. The R2 obtained for most of the plots was in the range of 0.988-0.997. The Beer-Lambert's law was used for the first time to quantitatively estimate the weight percent of methylene and methyl groups present in the different fractions of asphalt.

Original languageEnglish
Pages (from-to)2048-2057
Number of pages10
JournalPetroleum Science and Technology
Volume26
Issue number17
DOIs
StatePublished - Jan 2008

Keywords

  • Asphalt
  • Asphaltene
  • CH
  • CH
  • IR
  • N-nonadecane
  • Naphthenes
  • Polars
  • Saturates

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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