Hydrogen bonding in asphaltenes and coal liquids. Quarterly report, August 1, 1981-October 31, 1981
The middle distillate from Illinois No. 6 solvent-refined coal (SRC II) is relatively stable to aging by direct oxygenation at 335 K. Metallic copper accelerates oxygen aging as evident by an increase in viscosity and formation of pentane-insoluble components. IR Spectra after aging show a significant reduction in the intensity of the free hydroxyl band. FTIR spectra show that oxygen-containing compounds of the coal liquid have been concentrated in the pentane-insoluble fraction, and that the oxygen bubbled into the coal liquid has been incorporated into the structure of this fraction. Gel permeation chromatograms also show the formation of large molecular-size aggregates during aging. 600 MHz NMR spectra of the aged pentane-soluble fraction are similar to those of the unaged acid-free fraction. GC-MS analysis of the aged pentane-soluble fraction show that the phenol, cresol, xylenol and indanol peaks are much smaller in intensity, compared to the original middle distillate.
- Research Organization:
- Duquesne Univ., Pittsburgh, PA (USA). Dept. of Chemistry
- DOE Contract Number:
- AC22-80PC30252
- OSTI ID:
- 6263200
- Report Number(s):
- DOE/PC/30252-T5; ON: DE82001131
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrogen bonding in asphaltenes and coal liquids. Quarterly report, November 1, 1980-January 31, 1981
Hydrogen bonding in asphaltenes and coal liquids. Quarterly report, 1 February-30 April 1981
Related Subjects
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AGING
ALKANES
AROMATICS
CATALYTIC EFFECTS
CHEMICAL BONDS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
COPPER
CRESOLS
ELEMENTS
EXTRACTION
FLUIDS
GAS CHROMATOGRAPHY
HYDROCARBONS
HYDROGEN
HYDROXY COMPOUNDS
INFRARED SPECTRA
LIQUEFACTION
LIQUIDS
MASS SPECTROSCOPY
MEDIUM TEMPERATURE
METALS
NMR SPECTRA
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
PENTANE
PHENOLS
POLYMERIZATION
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTRA
SPECTROSCOPY
SRC-II PROCESS
STRUCTURAL CHEMICAL ANALYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
VISCOSITY
XYLENOLS