Sulfur X-ray Absorption Near Edge Spectroscopy (XANES) to

Absorption Near Edge Spectroscopy (XANES) to ascertain the coal and petroleum fractions ... The coal and petroleum asphaltenes are remarkably ...
3 downloads 6 Views 36KB Size
Sulfur X-ray Absorption Near Edge Spectroscopy (XANES) to ascertain the coal and XANES spectra of coal oil and petroleum fractions asphaltenes and petroleum asphaltene

• • • •

XANES is very powerful in identifying and quantifying the different sulfur structures in fossil-fuels Asphaltenes, albeit being polar fractions, do not show any propensity for sulfoxide content The coal and petroleum asphaltenes are remarkably similar in their sulfur content Coal oil and coal asphaletenes have similar thiophene/sulfide ratios. Reference soil and humic and fulvic acid samples show large sulfur-oxygen content, large organic sulfide content, and no inorganic sulfide.

UG8 Petroleum asphaltene

Wyoming coal oil Normalized Absorption



Wyoming coal asphaltene Tanito Harum coal oil Tanito Harum coal asphaltene Adora coal oil Adora coal asphaltene

2465 2467 2469 2471 2473 2475 2477 2479 2481 2483 2485

Energy (eV)