Molecular characterization of vanadyl and nickel non-porphyrin compounds in heavy crude petroleums and residua
The molecular characterization of vanadium and nickel compounds in heavy crude petroleums has been the subject of current research. Arabian Heavy, Maya, Boscan, Cerro Negro, Prudhoe Bay, Wilmington Beta, Kern River, and Morichal crude petroleums have been examined. Fractions from D 2007 separations, porphyrin extractions, and solvent selective extraction with reversed phase column separations of these petroleums have been studied thoroughly by EPR. Important structural aspects are emerging from the presented data: (1) There are non-porphyrin metal complexes in the crude petroleums. (2) They appear to be smaller molecules with MW < 400 which are liberated when the tertiary structure of the large asphaltics is denatured. (3) The first coordination spheres of this class of compounds are possibly 4N, N O 2S, and 4S. 10 references, 3 figures, 1 table.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6986173
- Report Number(s):
- LBL-17477; CONF-8406112-1; ON: DE84009245
- Resource Relation:
- Conference: International symposium on characterization of heavy crude oils and petroleum residues, Lyon, France, 25 Jun 1984; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NICKEL
ELECTRON SPIN RESONANCE
PETROLEUM
CHEMICAL ANALYSIS
VANADIUM
MOLECULAR WEIGHT
NICKEL COMPLEXES
PORPHYRINS
STRUCTURAL CHEMICAL ANALYSIS
VANADIUM COMPLEXES
CARBOXYLIC ACIDS
COMPLEXES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MAGNETIC RESONANCE
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RESONANCE
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
023000* - Petroleum- Properties & Composition