Hydrogen bonding in asphaltenes and coal. Quarterly report for April 1, 1979--June 30, 1979
Structural analyses are reported of upgraded coal-liquids derived from catalytic hydroprocessing of a 30 to 70 blend SRC I with SRC II in a trickle bed reactor under different process conditions. The results indicate that along with the decrease in toluene insolubles, heteroatom (O,N,S) content, aromatic content and corresponding increase in aliphatic content, the hydrogen-bonded structure and phenolic OH content of the coal-liquid drastically decrease with increase in contact time and temperature. The specific gravity, aromaticity, and atomic C/H ratio of the upgraded liquids decrease linearly with the conversion of pentane-insolubles (TI + A) into pentane-soluble oil (HO). Increase in temperature from 672/sup 0/K to 694/sup 0/K, under present hydroprocessing conditions, accelerates thermal hydrocracking and increases the conversion of pentane-insolubles, with a marked decrease in specific gravity, viscosity, heteroatom content, and atomic C/H ratio of the upgraded liquid. Hydroprocessing conditions greatly influence the properties of asphaltene fractions.
- Research Organization:
- Duquesne Univ., Pittsburgh, PA (USA). Dept. of Chemistry
- DOE Contract Number:
- EY-76-S-02-0063
- OSTI ID:
- 6090268
- Report Number(s):
- COO-0063-14
- Country of Publication:
- United States
- Language:
- English
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Hydrogen bonding in asphaltenes and coal. Progress report, March 1, 1977--August 31, 1977
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Related Subjects
COAL LIQUIDS
HYDROGENATION
REFINING
STRUCTURAL CHEMICAL ANALYSIS
AROMATICS
ASPHALTENES
CHEMICAL BONDS
COAL LIQUEFACTION
HETEROCYCLIC COMPOUNDS
SRC PROCESS
SRC-II PROCESS
THERMAL CRACKING
ASPHALTS
BITUMENS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
PYROLYSIS
TAR
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010600 - Coal
Lignite
& Peat- Properties & Composition