Separation of asphaltenes using high-resolution supercritical-fluid chromatography. Progress report, December 1, 1982-February 28, 1983. [Vacuum still bottoms; benzo fluoroanthene]
Technical Report
·
OSTI ID:6503785
During this period, the developed Supercritical-Fluid Chromatography (SFC) instrumentation was applied to the analysis of a vacuum still bottoms. Small diameter (50 to 100 ..mu..m i.d.) capillary columns were used to resolve mixture components, and scanning fluorescence detection provided selective detection and identification of many separated components. This report describes the initial attempts to combine the developments in column technology and SFC instrumentation which have been made during the past 18 months to the analysis of an actual high-molecular-weight coal-derived product. In addition, an evaluation of the stability of stationary phases resulting from crosslinking procedures has been made. The commonly used peroxides for free-radical generation also promote oxidation of the tolyl crosslinking groups which ultimately lead to decomposition of the phase and limited resistance to the solvating power of the supercritical fluids used in chromatography. Azo-compounds have been found to be effective in crosslinking, and do not promote oxidation. 23 figures, 2 tables.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA). Dept. of Chemistry
- DOE Contract Number:
- FG22-81PC40809
- OSTI ID:
- 6503785
- Report Number(s):
- DOE/PC/40809-T5; ON: DE83008321
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ALKANES
AROMATICS
CHROMATOGRAPHY
COAL LIQUIDS
CONDENSED AROMATICS
DATA
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
EXTRACTION
FLUIDS
FLUORESCENCE SPECTROSCOPY
HYDROCARBONS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
LIQUIDS
METHYLENE CHLORIDE
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PENTANE
PERYLENE
PYRENE
RESEARCH PROGRAMS
RESIDUES
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROSCOPY
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ALKANES
AROMATICS
CHROMATOGRAPHY
COAL LIQUIDS
CONDENSED AROMATICS
DATA
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
EXTRACTION
FLUIDS
FLUORESCENCE SPECTROSCOPY
HYDROCARBONS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
LIQUIDS
METHYLENE CHLORIDE
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PENTANE
PERYLENE
PYRENE
RESEARCH PROGRAMS
RESIDUES
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROSCOPY