Generation of Ni(2+) and VO(2+) porphyrins from kerogen during laboratory pyrolysis
The fate of the Ni and V complexes in kerogen during simulated catagenesis was studied using laboratory pyrolysis. Individual samples of New Albany and Woodford oil shale kerogen were pyrolyzed in toluene at fixed temperatures from 100-350/sup 0/C. Sequential pyrolysis of the same kerogen aliquot at increasing temperatures allowed a distinction to be made between metal complexes in the pyrolysate which were components of residual bitumen associated with the kerogen (low temperature pyrolysis) and those complexes generated from the kerogen matrix (high temperature pyrolysis). Spectral analysis of the pyrolysates indicate generation of both Ni(2+) and VO(2+) porphyrins from the kerogen with the relative proportion of each directly related to the Ni and V contents of the kerogen. The V/(Ni + V) ratio of the kerogen pyrolysates and the kerogen, bitumen, and asphaltenes isolated from the shale are compared. Work is underway to characterize the porphyrin species generated during pyrolysis and compare them to the porphyrin species present in the bitumen. Both adsorption and direct bonding of metalloporphyrins to the kerogen matrix are discussed as association mechanisms.
- Research Organization:
- Dept. of Chemistry and Nuclear Radiation Center, Washington State Univ., Pullman, WA 99164-1300
- OSTI ID:
- 5602219
- Report Number(s):
- CONF-860425-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Vol. 31:2; ISSN ACPCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040500* -- Oil Shales & Tar Sands-- Properties & Composition
ADSORPTION
ALKYLATED AROMATICS
AROMATICS
ASPHALTENES
ASPHALTS
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CATAGENESIS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMPLEXES
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
KEROGEN
MATERIALS
METALS
NICKEL
NICKEL COMPLEXES
OIL SHALES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC MATTER
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PORPHYRINS
PRODUCTION
PYROLYSIS
SORPTION
TAR
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
TOLUENE
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM COMPLEXES
VANADIUM COMPOUNDS
VANADIUM OXIDES
YIELDS