Low temperature oxidation and pyrolysis of n-heptane in nanosecond-pulsed plasma discharges
作者： Aric Rousso , Suo Yang , Joseph Lefkowitz , Wenting Sun , Yiguang Ju
DOI: 10.1016/J.PROCI.2016.08.084
关键词: Limiting oxygen concentration 、 Oxygen 、 Analytical chemistry 、 Electron ionization 、 Argon 、 Chemistry 、 Heptane 、 Nanosecond 、 Dissociation (chemistry) 、 Dilution
摘要: Abstract The present study seeks to explore the parametric effects of oxygen concentration, argon dilution and plasma discharge frequency on pyrolytic oxidative reaction pathways n-heptane assisted by non-equilibrium discharge. Low temperature n-heptane/O 2 /Ar mixtures with a nanosecond repetitively pulsed are experimentally investigated in both situ time-dependent TDLAS steady state gas sampling diagnostics. Fuel consumption is found be more effective higher than concentrations, indicating electron number densities direct impact dissociation oxygen. Steady results suggest linear trend product species formation increasing frequency, different major for oxidation pyrolysis. In measurements, comparison between experiments numerical modeling show that intermediate species, formaldehyde, significantly under-predicted while fuel water production over-predicted. This discrepancy suggests missing reactions current model, possibly involving excited alkyl peroxide radicals.
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