Vanadium and nickel complexes in the Alberta oil sands

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6128553

Strong, D

The nature, distribution and mode of association of V and Ni complexes in the Alberta oil-sand bitumens were investigated using neutron activation analysis (NAA), ultra-violet spectroscopy (UV), liquid chromatography, and mass spectrometry (El-MS). The Athabasca, Peace River and Cold Lake bitumens were fractionated into three soluble extracts and an asphaltene solid. All the V in the extracts was present as vanadyl porphyrin but only a small fraction of the Ni is porphyrinic. The vanadyl porphyrin content of the Athabasca bitumen is 9.52 ..mu..g/g (Peace River: 92 ..mu..g/g; Cold Lake 77 ..mu..g/g) corresponding to 47% of the total V in the bitumen (51% and 40% of the Peace River and Cold Lake respectively) the remaining still associated strongly in the asphaltenes. All five types of porphyrins were present as homologous series with carbon numbers ranging from C/sub 27/-C/sub 40/. The maxima occur at C/sub 32/ for DPEP series, C/sub 29/-C/sub 32/ for etio and C/sub 28/ for the diDPEP, rhodo etio and rhodo DPEP. The relative abundance was in the following order: DPEP > etio > diDPEP > rhodo-etio > rhodo-DPEP. The DPEP/other porphyrin ratios (etio, di-DPEP, etc.), in the bitumen extracts are similar and decrease in the order: Athabasca > Peace River > Cold Lake. The results confirm that biodgradation has no effect on porphyrin distributions and that the bitumens are related geochemically.

• Research Organization: Washington State Univ., Pullman (USA)
• OSTI ID: 6128553
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040500* -- Oil Shales & Tar Sands-- Properties & Composition
ACTIVATION ANALYSIS
ALBERTA
ASPHALTENES
ASPHALTS
ATHABASCA DEPOSIT
BARYON REACTIONS
BITUMENS
BITUMINOUS MATERIALS
CANADA
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COLD LAKE DEPOSIT
COMPARATIVE EVALUATIONS
COMPLEXES
DISTRIBUTION
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
GEOLOGIC DEPOSITS
HADRON REACTIONS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
MATERIALS
MOLECULAR WEIGHT
NEUTRON REACTIONS
NICKEL COMPLEXES
NORTH AMERICA
NUCLEAR REACTIONS
NUCLEON REACTIONS
OIL SAND DEPOSITS
OIL SANDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PEACE RIVER DEPOSIT
PORPHYRINS
QUANTITY RATIO
SEPARATION PROCESSES
SPECTRA
SPECTROSCOPY
TAR
TRANSITION ELEMENT COMPLEXES
ULTRAVIOLET SPECTRA
VANADIUM COMPLEXES