The Nature And Reactivity Of The Elemental Carbon (SOOT) Surface As Revealed By Fourier Transform Infrared (FTIR) Spectroscopy

J. R. Keifer; M. Novicky; M. S. Akhter; A. R. Chughtai; D. M. Smith

doi:10.1117/12.932165

29 October 1981 The Nature And Reactivity Of The Elemental Carbon (SOOT) Surface As Revealed By Fourier Transform Infrared (FTIR) Spectroscopy

J. R. Keifer, M. Novicky, M. S. Akhter, A. R. Chughtai, D. M. Smith

Author Affiliations +

Proceedings Volume 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy; (1981) https://doi.org/10.1117/12.932165
Event: 1981 International Conference on Fourier Transform Infrared Spectroscopy, 1981, Columbia, United States

Abstract

The characterization of the surface of elemental carbon (soot) generated by the combustion of hexane, taken as a model for petroleum fuel, has been accomplished with Fourier transform infrared (FT-IR) spectroscopy combined with thermal desorption measurements. Carbon-oxygen functionalities on the fresh carbon surface include acid anhydride, a carbonyl conjugated with an aromatic segment, an alkyl ketone, and aryl ether linkages. Also present, confirmed by isotopic substitution, is a quantity of unsaturated C-H dependent upon the conditions of soot formation. The reactivity of this surface toward some oxides of sulfur and nitrogen also has been studied by FT-IR. SO2 reacts selectively with surface groups in the absence of 02 to form sulfate. The formation of carboxylate and nitro groups, through the reaction of NO2 with the functional groups of the soot surface, has been observed.

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J. R. Keifer, M. Novicky, M. S. Akhter, A. R. Chughtai, and D. M. Smith "The Nature And Reactivity Of The Elemental Carbon (SOOT) Surface As Revealed By Fourier Transform Infrared (FTIR) Spectroscopy", Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); https://doi.org/10.1117/12.932165

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