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RESEARCH PRODUCT
A Study Using Sulfur K-Edge XAS of Bitumens, Asphaltenes, Maltenes and their Oxidation Products by Comparison with Model Compounds
Andrei RogalevJ. GoulonL. MichonC. Goulon-ginetV. GotteRoger GuilardD. Martinsubject
X-ray absorption spectroscopyExtended X-ray absorption fine structureK-edgeChemistryAnalytical chemistryGeneral Physics and AstronomyHigh resolutionchemistry.chemical_elementSulfurXANESSpectral lineAsphaltenedescription
High resolution Sulfur K-edge XANES spectra have been recorded at the ESRF on test samples of bitumen, asphaltene and maltene fractions and various model compounds. All these fractions were found to have a low content of sulfidic species as opposed to thiophenic species and it is therefore not surprising that thermally oxidized samples (RTFOT) had also a low content (1%) of sulfoxides. This is indeed consistent with the absence of any detectable S=O signature in the EXAFS spectra which were recorded over more than 1300 eV using the undulator gap scan technique.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-04-01 | Le Journal de Physique IV |