Hannover 2020 – scientific programme
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P: Fachverband Plasmaphysik
P 5: Poster Session 1
P 5.19: Poster
Monday, March 9, 2020, 16:30–18:30, Empore Lichthof
Infrared study of CH4 conversion in a non-equilibrium O2/He atmospheric pressure plasma jet — •Theresa Urbanietz, Christoph Stewig, Marc Böke, and Achim von Keudell — Experimental Physics II, Ruhr-University Bochum, 44780 Bochum
The dissociation of CH4 in a non-equilibrium atmospheric pressure O2/He plasma jet is measured for varying absorbed plasma powers and different CH4/O2 ratios. Space resolved measurements are performed and analyzed by Fourier transform infrared spectroscopy. This diagnostic is used to evaluate the products of the reactions which are CH4, CO2, CO and H2O. By comparing the measured spectra with calculated spectra the concentration as well as the rotational and vibrational excitation of the species are determined. It is shown that the CO concentration is independent of the CH4/O2 ratio. The consumption of CH4 is limited by the oxygen admixture.