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The Chemical Nature of Oxidized Sulphur in Asphaltenes from X-Ray Absorption Spectroscopy
1997
Journal de Physique IV : Proceedings
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Abdmct. Bitumen samples have been chosen either from natural oil seepages and outcropping oil-stained reservoirs or archawlogical bitumens from excavations in Iraq and Pakistan. Asphaltenes have been extracted from the bitumens. X-ray absorption near edge fine structure (XANES) spectroscopy at the S L-edge and Kedge has been employed to foUow the oxidation effects on various sulphur moieties ofthe asphdtene fractions. Among asphaltenes extracted from archwlogical bitumens, sulphoxide, sulphone
doi:10.1051/jp4:1997241
fatcat:xnc2ni7horbuxe7uabhydsrgae