03/02161 Liquefaction of Estonian oil shale kerogen in sub- and supercritical ether medium 2. Composition of liquid products: Luik, H. et al. Oil Shale, 2002, 19, (4), 355–372
- Publisher
- Elsevier Science
- Year
- 2003
- Weight
- 195 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0140-6701
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✦ Synopsis
02 Liquid fuels (transpoti, refining, quality, storage) pattern locally indicate rapid subsidence (up to ca. 1.2 n&a) of the outer shelf and slope area since 350 ka BP. The subsidence is most likely a response to the rapid deposition of glacigenic sediments during the Plio-Pleistocene. It is inferred that sediment loading was an important factor behind the diapirism in the Vema Dome area.
03/02161 Liquefaction of Estonian oil shale kerogen in suband supercritical ether medium 2. Composition of liquid products Luik, H. er al. Oil Shale, 2002, 19, (4), 355-372. Liquid benzene-soluble products of kukersite kerogen liquefaction in the medium di-Et ether, dioxane-1,4 and ethylene oxide were separated into asphaltenes, malthenes, phenols, aliphatic. and aromatic hydrocarbons, water-soluble neutral oxygen and high-polar compounds. High-molecular compounds separated were submitted to additional pyrolysis to investigate the composition of secondary compounds. Total products, fractions separated from them and pyrolysates were analysed by IR spectroscopy and gas chromatography to investigate the effect of various ethers on their chemical modification. The most characteristic similarities and differences between primary and secondary products of liquefaction were established. The final liquid products were formed as a result of thermal decomposition of previously oxyalkylated intermediates, those being different whether ethylene oxide, dioxane-1,4 or di-Et ether were used as liquefaction medium.