Chemistry and structure of coal derived asphaltenes and preasphaltenes. Quarterly progress report, January-March 1980
Technical Report
·
OSTI ID:5622367
The following conclusions are drawn: (1) the aromaticity of petroleum-derived asphaltene (f/sub a/ = 0.2-0.5) is lower than that of coal-derived asphaltene (f/sub a/ = 0.6-0.7). (2) The aromatic ring systems within petroleum-derived asphaltene are much more ccondensed (peri) (H/sub aru//C/sub ar/ = 0.3-0.5) than that of coal-derived asphaltene (kata)(H/sub aru//C/sub ar/ = 0.5-0.7). (3) The substituents of the petroleum-derived asphaltenes are longer (n = 4-6) than those of coal-derived asphaltenes (n = 1). (4) The aromatic system of petroleum-derived asphaltene is extensively substituted (70 to 80%), whereas the coal-derived asphaltene is sparingly substituted (35 to 45%). (5) The molecular weight of petroleum-derived asphaltene is ca. 10 times higher than that of the coal-derived asphaltene. (6) Petroleum-derived asphaltene is less reactive to physical or chemical agents than that of coal-derived asphaltene. (7) Petroleum-derived asphaltene is more highly associated (Me = 5-7) than that of coal-derived asphaltene (Me-2-4). This will be reflected in the ease of processing. (8) Petroleum-derived asphaltene is less poplar than the coal-derived asphaltene.
- Research Organization:
- University of Southern California, Los Angeles (USA)
- OSTI ID:
- 5622367
- Report Number(s):
- FE-2031-16
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ASPHALTENES
ASPHALTS
BITUMENS
CHEMISTRY
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
STRUCTURAL MODELS
TAR
THERMOCHEMICAL PROCESSES
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ASPHALTENES
ASPHALTS
BITUMENS
CHEMISTRY
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
STRUCTURAL MODELS
TAR
THERMOCHEMICAL PROCESSES