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P: Fachverband Plasmaphysik
P 14: Atmospheric Plasmas and their Applications IV
P 14.1: Invited Talk
Wednesday, April 2, 2025, 13:45–14:15, ZHG006
Carbon Dioxide Splitting in Dielectric Barrier Discharges: Power Dissipation and Plasma Chemistry — •Ronny Brandenburg1,2, Milko Schiorlin1, and Volker Brüser1 — 1Leibniz-Institut für Plasmaforschung und Technologie e.V., Greifs-wald — 2Universität Rostock, Institut für Physik
The conversion of carbon dioxide to carbon monoxide (CO), oxygen and ozone in planar volume dielectric barrier discharges (DBDs) is studied. The type of the electrodes, the barrier material, the barrier thickness, the discharge gap, the flow rate, the high voltage frequency and amplitude as well as the electrode area are varied systematically. Power dissipation is studied by voltage-charge plots based on an adapted equivalent circuit and the Manley-equation for discharge power is generalized for the occurrence of parasitic capacitances and so-called partial surface discharging. The energy yield of CO (EY) results in similar values of about 25 g/kWh in pure carbon dioxide within the specific input energy (SIE) range 20 - 2000 J/L, independent on the above mentioned parameters. SIE higher than 3000 J/L yield a slightly lower EY. A comparison with various other DBD-reactors is done and the role of SIE as a scaling parameter is discussed. Funded by German Federal Ministry of Education and Research (BMBF) and European Union NextGenerationEU under grant 033RC030D.
Keywords: Dielectric Barrier Discharges; Power-to-Gas; Gas conversion; Greenhouse Gas