Characterization of Corbett fractions of asphalt by FT-IR and NMR spectrometry

Conference · Sat Apr 01 00:00:00 EST 1989 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5083441

Philip, C V; Bullin, J A; Glover, C J; Davison, R R ^[1]

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1. Texas A and M Univ., College Station (USA)

The Corbett separation technique utilizes the difference in the solubility of chemical species in solvents with varying polarity. Asphalt samples are separated into four fractions-asphaltenes, saturates, naphthene aromatics and polar aromatics. Some of the drawbacks of the Corbett separation technique which is very labor intensive, includes lack of reproducibility and overlapping of fractions. Proton and {sup 13}C NMR spectrometry can identify the chemical nature of hydrogens and carbons even in complex organic mixtures such as petroleum crude and its refinery products. The wide use of Fourier Transform infrared spectrometry (FT-IR) for the analysis of fossil fuels has been reported. NMR and FT-IR spectrometry were used to characterize the Corbett fractions. The NMR and FT-IR data are used in this paper in order to evaluate the efficiency of Corbett separation and also to study the predominant structural features of asphalt and its Corbett fractions.

• OSTI ID: 5083441
• Report Number(s): CONF-8904130-; CODEN: ACPCA
• Journal Information: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA), Vol. 34:2; Conference: Analytical chemistry of heavy oils/resids symposium, Dallas, TX (USA), 9-14 Apr 1989; ISSN 0569-3799
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ASPHALTS
SOLVENT EXTRACTION
STRUCTURAL CHEMICAL ANALYSIS
PETROLEUM FRACTIONS
CARBON 13
EXPERIMENTAL DATA
FOURIER TRANSFORM SPECTROMETERS
HYDROGEN 1
INFRARED SPECTRA
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
BITUMENS
CARBON ISOTOPES
DATA
ENERGY SOURCES
EVEN-ODD NUCLEI
EXTRACTION
FOSSIL FUELS
FUELS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MEASURING INSTRUMENTS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
RESONANCE
SEPARATION PROCESSES
SPECTRA
SPECTROMETERS
STABLE ISOTOPES
TAR
023000* - Petroleum- Properties & Composition
400105 - Separation Procedures