Hydrogen bonding in asphaltenes and coal. Quarterly report, January 1--March 31, 1979
In this study, upgraded coal liquids from a blend of 30 weight percent of SRC I with 70 weight percent of SRC II, as well as from SRC II, have been studied by IR and NMR techniques. The variation of structural parameters of the upgraded liquids has been determined as a function of reaction temperature and contact time in the catalytic hydroprocessing. The results indicate that along with the decrease in heteroatom contents, asphaltene content, aromatic content and a corresponding increase in aliphatic content, the hydrogen-bonded structure and phenolic OH content of the coal liquids drastically decrease with increase in contact time and temperature. The disappearance of phenolic OH in upgrading process follows a first-order kinetics but no such dependence was observed in case of acidic NH.
- Research Organization:
- Duquesne Univ., Pittsburgh, PA (USA). Dept. of Chemistry
- OSTI ID:
- 5983111
- Report Number(s):
- COO-0063-13
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ASPHALTENES
ASPHALTS
BITUMENS
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL BONDS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
COAL LIQUIDS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HYDROGENATION
INFRARED SPECTRA
LIQUEFACTION
MAGNETIC RESONANCE
METALS
MOLYBDENUM
NICKEL
NITROGEN
NONMETALS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN
PROCESSING
REFINING
REFRACTORY METALS
REMOVAL
RESONANCE
SEPARATION PROCESSES
SPECTRA
SRC PROCESS
SRC-II PROCESS
STRUCTURAL CHEMICAL ANALYSIS
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS