Fractionations of nonporphyrin complexes of vanadium and nickel from Boscan crude oil

Journal Article · Sun May 01 04:00:00 EDT 1983 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398308060299· OSTI ID:5319257

Crouch, F W ^[1]; Sommer, C S; Galobardes, J F; Kraus, S; Schmauch, E H; Galobardes, M; Fatmi, A; Pearsall, K; Rogers, L B

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1. Univ. of Georgia, Athens

Samples containing vanadium and nickel nonporphyrin complexes were isolated from Boscan crude oil from Venezuela. Chromatographic studies indicated that a broad mol wt range of components existed so that silica packings having a 300 Angstrom average pore diameter were superior to those in the range 60 to 100 Angstrom due to greater permeation. Solvents having widely different polarities and selectivities were needed for elution of nonporphyrins from 300 Angstrom pore diameter silica derivatized with trimethylchlorosilane. Successive solvents eluted different percentages of the metals and of uv-visible absorbing components. Larger molecular-weight species, which contained the bulk of the metals, were eluted by chloroform, methylene chloride, and tetrahydrofuran. Results also suggested the existence of slow ''equilibria'' between high and low molecular weight species within a particular nonporphyrin fraction.

• OSTI ID: 5319257
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 18:7; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400105* -- Separation Procedures
ABSORPTION SPECTRA
ASPHALTENES
ASPHALTS
BITUMENS
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CHROMATOGRAPHY
COLUMN PACKING
COMPLEXES
DATA
DEVELOPING COUNTRIES
ENERGY SOURCES
EVAPORATION
EXPERIMENTAL DATA
EXTRACTION CHROMATOGRAPHY
FOSSIL FUELS
FRACTIONATION
FUELS
FURANS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
LATIN AMERICA
MEDIUM TEMPERATURE
METHYLENE CHLORIDE
MINERALS
MOLECULAR WEIGHT
NICKEL COMPLEXES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PACKINGS
PARTICLE SIZE
PETROLEUM
PHASE TRANSFORMATIONS
SAMPLE PREPARATION
SEPARATION PROCESSES
SILANES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SOLVENT PROPERTIES
SOUTH AMERICA
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TAR
TEMPERATURE DEPENDENCE
TETRAHYDROFURAN
TIME DEPENDENCE
TRANSITION ELEMENT COMPLEXES
VANADIUM COMPLEXES
VENEZUELA
VERY HIGH TEMPERATURE