An examination of the petroporphyrins found in oil shale from the Julia Creek Deposit of the toolebuc formation

Conference · Tue Feb 01 04:00:00 EST 1983 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6288744

Ekstrom, A; Dale, L; Loeh, H

The nature of the petroporphyrins found in a variety of crude oils, oil shales, ancient and recent sediments have been a subject of continual interest since these compounds were first isolated from such materials by Treibs et al. some fifty years ago. It is now generally agreed that the petroporphyrins represent the degradation products of chlorophyll and that they consist predominantly of homologous series of deoxophylloerythroetioporphyrin (DPEP) and etio porphyrins. However, as yet unidentified porphyrin compounds which do not belong to either of these two classes have been observed in some samples and the proposition that all petroporphyrins are derived from chlorophyll has also been questioned. The oil shale of the Toolebuc formation in Queensland, Australia has been shown to contain relatively high concentrations of vanadium and nickel porphyrin compounds. Saxby et al. have suggested that these porphyrins are largely of the DPEP and etio-type and also observed significant variations in their concentrations in samples taken from various sites in the deposit. In this paper we describe two further aspects of the porphyrin compounds in this deposit. First, the variations in the concentrations of the chloroform extractable metal porphyrin compounds through well-characterized drill cores was determined, and second, the nature of the vanadium porphyrins was examined using absorption spectrophotometry and insertion probe, fast atom bombardment (FAB) and field desorption (FD) mass spectrometry techniques.

• Research Organization: CSIRO Division of Energy Chemistry, Lucas Heights Research Laboratories, Sutherland, NSW
• OSTI ID: 6288744
• Report Number(s): CONF-830303-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 28:1
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040201 -- Oil Shales & Tar Sands-- Site Geology-- (-1989)
040500* -- Oil Shales & Tar Sands-- Properties & Composition
ABSORPTION SPECTROSCOPY
AUSTRALASIA
AUSTRALIA
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MASS SPECTROSCOPY
MATERIALS
MINERAL RESOURCES
NICKEL COMPOUNDS
OIL SHALE DEPOSITS
OIL SHALES
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PORPHYRINS
QUEENSLAND
RESOURCES
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS