Supercritical fluid chromatography/supersonic jet spectroscopy. Progress report, February 1, 1985-April 30, 1985

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5808616

Lee, M L; Goates, S R

Supercritical fluid (SF) fractionations of a petroleum crude oil and a solvent refined coal heavy distillate (HD) were conducted. The flame ion detector (FID) uv chromatograms of the petroleum crude oil and SRC II HD on NH/sub 2/-modified silica with CO/sub 2/ at 40/sup 0/C are shown in Figures 3 and 5, respectively. The gas chromatograms of the fractions are shown in Figures 4 and 6. Because this crude oil contained compounds with such a wide range of molecular weights, a chemical class separation was not possible on this column. However, for the fractionation of SRC II HD, the aliphatics and neutral aromatics eluted in the first fraction and the nitrogen compounds and high molecular weight neutral aromatics eluted in the second fraction. It was concluded that the FID system performed satisfactorily on the whole. Progress on supersonic jet spectroscopy has been inhibited this quarter by the need to temporarily vacate the spectroscopy lab for physical plant modifications. The investigators used this time to evaluate the experiment and their approach. Their initial spectroscopic results with naphthalene have demonstrated considerable improvement in spectral resolution by supersonic jet/supercritical fluid technique, but sensitivity has been lacking, and they have not yet achieved the same degree of jet cooling that has been demonstrated with conventional carrier gases. These problems are under investigation.

• Research Organization: Brigham Young Univ., Provo, UT (USA). Dept. of Chemistry
• DOE Contract Number: FG22-83PC60807
• OSTI ID: 5808616
• Report Number(s): DOE/PC/60807-7; ON: DE85012539
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
COAL LIQUIDS
DATA
DISTILLATES
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FRACTIONATION
FUELS
GAS CHROMATOGRAPHY
INFORMATION
LIQUIDS
MEDIUM TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
RESEARCH PROGRAMS
SEPARATION PROCESSES
SPECTROSCOPY
SRC PROCESS
SUPERCRITICAL FLUID CHROMATOGRAPHY