Supercritical fluid fractionation of petroleum- and coal-derived mixtures
A supercritical fluid chromatography system was constructed to provide separations and fraction collection on a semi-preparative scale. A variety of complex mixtures were fractionated according to the number of aromatic rings using columns packed with NH/sub 2/-modified silica particles. Effluents were monitored with an ultraviolet spectrophotometer and a flame ionization detector while fractions were collected in pressurized vessels for subsequent analysis by capillary gas chromatography. A supercritical fluid chromatographic method to determine the percentage of saturates, olefins and aromatics in gasolines and middle distillate fuels was developed. A microbore silica column was used to isolate the aromatics, while a silver-loaded strong cation exchange microbore column was used to isolate the saturates Olefins were determined by difference. A flame ionization detector provided uniform, linear response for quantitation without calibration. The method was found to be accurate, rapid and reproducible.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA)
- OSTI ID:
- 6069124
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
COAL LIQUIDS
CHROMATOGRAPHY
PETROLEUM
AMINES
SILICA
CHALCOGENIDES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
LIQUIDS
MINERALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICON COMPOUNDS
SILICON OXIDES
020400* - Petroleum- Processing
010402 - Coal
Lignite
& Peat- Purification & Upgrading