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- W118187226 abstract "Both Green River and Monterey Oil Shales (approx. =140 mesh) were used to prepare kerogen concentrates (ash content: 4.3% for Green River, 5.6% for Monterey). The bitumen of both shale samples were removed by extraction with phiH-MeOH azeotrope before and after the mineral removal step. The bitumen-free kerogen concentrates were subjected to controlled, mild, stepwise oxidation with Na/sub 2/Cr/sub 2/O/sub 7/-HOAc to yield five (Green River) and four (Monterey) fractions. Analyses of the oxidation products were carried out by capillary GC and GC-MS. Results from the studies of all the fractions suggest the following tentative conclusions: 1) porphyrin is not homogeneously distributed throughout kerogen matrix, 2) only etioporphyrin III is found for the porphyrin type in kerogen, 3) it is not likely that porphyrin is chemically bounded to kerogen." @default.
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- W118187226 date "1986-04-01" @default.
- W118187226 modified "2023-09-23" @default.
- W118187226 title "The nature of porphyrin in kerogen" @default.
- W118187226 hasPublicationYear "1986" @default.
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