A STUDY USING SULFUR K-EDGE XAS OF BITUMENS, ASPHALTENES, MALTENES AND THEIR OXIDATION-PRODUCTS BY COMPARISON WITH MODEL COMPOUNDS

Authors
GOTTE V ROGALEV A GOULON J GOULONGINET C MICHON L GUILARD R MARTIN D
Citation
V. Gotte et al., A STUDY USING SULFUR K-EDGE XAS OF BITUMENS, ASPHALTENES, MALTENES AND THEIR OXIDATION-PRODUCTS BY COMPARISON WITH MODEL COMPOUNDS, Journal de physique. IV, 7(C2), 1997, pp. 667-668
Citations number
8
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
7
Issue
C2
Year of publication
1997
Part
1
Pages
667 - 668
Database
ISI
SICI code
1155-4339(1997)7:C2<667:ASUSKX>2.0.ZU;2-C
Abstract
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 i t is therefore not surprising that thermally oxidized samples (RTFOT) had also a low content (1%) of sulfoxides. This is indeed consistent w ith the absence of any detectable S=O signature in the EXAFS spectra w hich were recorded over more than 1300 eV using the ''undulator gap sc an'' technique.