XPS of nitrogen-containing functional groups formed during the C-NO reaction

Philippe Chambrion, Takeshi Suzuki, Zhan Guo Zhang, Takashi Kyotani, Akira Tomita

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)


The reaction between nitrogen oxides and carbon generates nitrogen-containing complexes on the carbon surface. The use of X-ray photoelectron spectroscopy allowed the characterization of these surface complexes. Five distinct structures have been distinguished, corresponding to nitrogen incorporated in five- and six-member ring as well as pyridine N-oxide and nitrate. Temperature has been found to be the determinant in the repartition of surface species. The reaction with NO-O2 at 600°C has produced both pyrrolic and pyridinic nitrogens, while the reaction with NO at 950°C mainly produced a pyridinic one. Quaternary nitrogen increased upon the heat treatment in He at 950°C after the char was reacted with NO-O2 at 600°C.

Original languageEnglish
Pages (from-to)681-685
Number of pages5
JournalEnergy and Fuels
Issue number3
Publication statusPublished - 1997

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology


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