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Title: Model compound study of pathways for aromatic hydrocarbon formation in soot (Abstract only)
Authors: Winans, Randall E.
Tomczyk, Nancy A.
Hunt, Jerry E.
Solum, Mark S.
Pugmire, Ronald J.
Jiang, Yi Jin
Fletcher, Thomas H.
Issue Date: 21-Aug-2007
Publisher: American Chemical Society
Citation: Energy and Fuels; vol. 21, no. 5, pp. 2584–2593 (2007)
Type: journal article
Pages: 12
Abstract: A previous study was conducted to determine the early sooting pathways of biphenyl and pyrene. Soot/pah samples from biphenyl were collected in a fuel-rich flat-flame burner at temperatures of 1365, 1410, and 1470 K and from pyrene at 1410 and 1470K. A more detailed analysis of the pyrolitic products has been performed using additional NMR data obtained on the whole soot sample correlated with detailed high resolution as well as GC mass spectrometry data on the solvent extracted portion of the same samples. These latter data complement the earlier NMR data with details of the pre-sooting structures, referred to as “young soot.” The data reveal the roles played by free radical assisted polymerization reactions as well as the hydrogen abstraction carbon addition (HACA) reactions for the biphenyl pyrolysis. The mass spectroscopy data of pyrene describe a much different set of reactions due to polymerization which employs free radical reactions of the pyrene due primarily to hydrogen abstraction followed by the formation of biaryl linkages at mass numbers up to five times that of the parent pyrene. Conceptual schema of reaction mechanisms are proposed to explain the formation pathways to materials detected in the soot extracts.
URI: http://hdl.handle.net/123456789/11002
Appears in Collections:ICSE Scholarship

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