Technique development for characterization of metalloorganics in acid-base-neutral fractions of heavy petroleum residues: Topical report
A novel approach for the characterization of metallorganic compounds in heavy petroleum residues has been developed. Wilmington 1000/sup 0/ F+ and Mayan 925/sup 0/ F+ residues and hydrotreated products were separated into acid-base-neutral (ABN) fractions by a unique nonaqueous ion-exchange technique developed at NIPER. The metal complexes in the feeds, hydrotreated products and ABN fractions were then characterized by determining the total vanadium and nickel and by measuring the vanadium and nickel porphyrin content of each fraction. Molecular weight distribution profiles of the vanadium and nickel compounds in the feed, 400/sup 0/C hydrotreated product and corresponding ABN fractions were obtained by size exclusion chromatography/inductively coupled plasma. The majority of the metal appeared to be in non-porphyrinic form. The vanadium and nickel complexes were distributed into all of the ABN fractions. In the feed and the whole hydrotreated products the porphyrin levels decreased as hydrotreating temperatures increased. In contrast to previously reported work, porphyrins do not always decrease when hydrotreated. The amount of porphyrins in certain ABN fractions increased after hydrotreating at moderate temperatures. The Mayan V and Ni complexes were more resistant to hydrotreating than the Wilmington metal complexes; in particular, the high molecular weight Mayan metal complexes were more resistant to hydrotreating than the high molecular weight Wilmington metal complexes. 15 refs., 11 figs., 10 tabs.
- Research Organization:
- National Inst. for Petroleum and Energy Research, Bartlesville, OK (USA)
- DOE Contract Number:
- FC22-83FE60149
- OSTI ID:
- 5589299
- Report Number(s):
- NIPER-283; ON: DE88001213
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NICKEL COMPLEXES
MOLECULAR WEIGHT
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
ORGANOMETALLIC COMPOUNDS
PETROLEUM RESIDUES
FRACTIONATION
HYDROGENATION
VANADIUM COMPLEXES
BASES
CHEMICAL REACTIONS
CHROMATOGRAPHY
COMPARATIVE EVALUATIONS
DISTRIBUTION
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
ION EXCHANGE
MEASURING METHODS
NICKEL
PORPHYRINS
SPECTROSCOPY
VANADIUM
YIELDS
CARBOXYLIC ACIDS
COMPLEXES
DATA
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
023000* - Petroleum- Properties & Composition
020400 - Petroleum- Processing
400105 - Separation Procedures
400102 - Chemical & Spectral Procedures