Distribution of pentacyclic triterpenoids in Green River oil shale kerogen

Conference · Wed Mar 01 04:00:00 EST 1989 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:6820555

Barakat, A O; Yen, T F ^[1]

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1. Jordan Univ. of Science and Technology, Irbid (Jordan) Univ. of Southern California, Los Angeles (USA)

Pentacyclic triterpenoids released by the Na{sub 2}Cr{sub 2}O{sub 7}/AcOH stepwise oxidation of Green River kerogen were examined by high resolution gas chromatography and computerized gas chromatography-mass spectrometry. Three series of stereoisomeric hopanic acids (C{sub 30}-C{sub 33}) were identified based on the {alpha}{beta}, {beta}{beta}, and {beta}{alpha} configurations. In addition, the following compounds were tentatively identified: 29,30-bisnorhopanoic acid, 30-norhop-22-one, 22,29,30-trinorhopan-21-one, 3-hopanone, and 3-gammacerone. The distribution of isomeric hopanoic acids supports previous suggestions of an extremely mild thermal history of the Green River kerogen. The results also provide further evidence in favor of the microbiological origin of at least part of the organic matter in Green River oil shale.

• OSTI ID: 6820555
• Report Number(s): CONF-8904125--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Journal Volume: 34:1
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040500* -- Oil Shales & Tar Sands-- Properties & Composition
58 GEOSCIENCES
580000 -- Geosciences
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GEOLOGIC FORMATIONS
GREEN RIVER FORMATION
KEROGEN
MASS SPECTROSCOPY
MATERIALS
MATURATION
OIL SHALES
ORGANIC MATTER
ORIGIN
OXIDATION
SEPARATION PROCESSES
SPECTROSCOPY