Nitrogen functionality distributions in asphaltenes isolated from several oils from different source rock types

Details Nitrogen functionality distributions in asphaltenes isolated from several oils from different source rock types Nitrogen functionality distributions in asphaltenes isolated from several oils from different source rock types

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.3745w&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 56, Issue 10, pp.3745-3750

Physics

Scientific paper

Seven asphaltenes isolated from oils from different source rock types have been examined by X-ray photoelectron spectroscopy (XPS) to determine their gross nitrogen speciation. Five-membered ring pyrrolic nitrogen and six-membered ring pyridinic nitrogen species are the main types present, with pyrrolic nitrogen dominating in all samples. Pyrrolic nitrogen:pyridinic nitrogen ratios were in the range of 1.44-4.26.

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