Fourier transform Raman spectroscopy of Syncrude Sweet Blend distillation fractions: the 200-1800 cm-1 region.
The fingerprint (200-1800 cm(-1)) region in FT-Raman spectra of Syncrude Sweet Blend (SSB) and its three constituent distillation fractions (naphtha, light gas oil and heavy gas oil) was analyzed in detail in this study. Approximately 50 bands were observed and assigned to functional groups in saturated (alkanes) and unsaturated (aromatics) species. Characteristic bands for mono-, bi-, and tricyclic aromatics were identified and used to quantify these groups in SSB and the distillation fractions. Total aromatics content was determined using the carbon-carbon stretching bands in the 1600-cm(-1) region, and shown to agree with earlier results obtained from the C-H stretching region. The bands due to mono- and bicyclic aromatics permitted calculation of the relative abundances of these species with an accuracy equivalent to that obtained using NMR spectroscopy, a traditional method for measuring this quantity.
Michaelian
K H
KH
Advanced Separation Technologies, CANMET Western Research Centre, National Resources Canada, 1 Oil Patch Drive, Suite A202, Devon, Alberta, Canada T9G 1A8. michaeli@nrcan.gc.ca
Zhang
S L
SL
Hall
R H
RH
Bulmer
J T
JT
D000473:Alkanes / Q000737:chemistry; D006841:Hydrocarbons, Aromatic / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
D000473:Alkanes; D006841:Hydrocarbons, Aromatic; C004544:naphtha