Recently particulate matter (PM) from jet-fueled combustors has received increasing attention.. To establish a more tractable  system in scale and fuel for PM study, soot from surrogate fuels, the two components, m-Xylene, n-Dodecane and the mixture (23% m-Xylene & 77% n-Dodecane) was studied and compared with the jet engine produced soot. Surrogate jet fuel components individually produce similar soot nanostructure (fullerenic) but together, a different nanostructure (graphitic).  All are different than that produced by JP-8 fuel which varies with engine power level.  These results are interpreted as reflecting the different gas species contributing to soot growth. To further investigate the fuel dependence of PM emissions, other fuels tested in the jet engine included Fischer-Tropsch (FT) and Hydrotreated Renewable Jet (HRJ) fuels and a blend of HRJ & JP-8.  Nanostructure analysis gives insight into differing formation conditions as dependent upon fuel and engine power level.

Physical nanostructure and chemical composition characterization of flame soot from m-xylene and n-dodecane jet surrogate fuels

244th National Meeting (2012)

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