Chemistry and structure of coal-derived asphaltenes: Phase I. Quarterly progress report, April--June 1976. [Fractionation into 5 fractions]
Coal liquids from the three direct general processes for converting coal to liquid fuels, catalyzed hydrogenation, staged pyrolysis, and solvent refining, have been separated by solvent fractionation into five fractions. These fractions are propane-soluble (oil); propane-insoluble and pentane-soluble (resin); pentane-insoluble and benzene-soluble (asphaltene); benzene-insoluble and carbon disulfide-soluble (carbene); carbon disulfide-insoluble (carboid). The great majority of the suitable fractions were characterized as to elemental analyses, molecular weight, metal analyses, color intensity, NMR-hydrogen percentages by proton type, infrared spectral analysis, structural parameter determination by x-ray diffraction, and particle size determination by transmittance electron microscopy. Selected crude asphaltene fractions have been chromatographed on alumina and acidic ion-exchange resins. The two major fractions obtained from Synthoil by elution from an acidic ion-exchange resin with benzene and pyridine compare relatively well with respect to ultimate analysis with previously isolated acidic and basic components of asphaltenes.
- Research Organization:
- University of Southern California, Los Angeles (USA)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- OSTI ID:
- 7266406
- Report Number(s):
- FE-2031-4
- Country of Publication:
- United States
- Language:
- English
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ALKANES
AROMATICS
ASPHALTENES
ASPHALTS
BENZENE
BITUMENS
CARBON COMPOUNDS
CARBON SULFIDES
CARBONACEOUS MATERIALS
CATALYSIS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
COAL LIQUIDS
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FRACTIONATION
FUELS
HYDROCARBONS
HYDROGENATION
INFRARED SPECTRA
LIQUEFACTION
LIQUID FUELS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PENTANE
PROPANE
PYROLYSIS
SCATTERING
SEPARATION PROCESSES
SOLUBILITY
SOLVENT EXTRACTION
SOLVENT-REFINED COAL
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SYNTHOIL PROCESS
TAR
X-RAY DIFFRACTION