SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 5: Atmospheric Pressure Plasmas and their Applications I

P 5.4: Vortrag

Dienstag, 21. März 2023, 12:00–12:15, CHE/0089

CO₂ splitting in 3D-printed barrier discharge reactors — •Dimas Adrianto¹, Milko Schiorlin¹, Volker Brüser¹, Ronny Brandenburg^1,2, and Sven Grundmann² — ¹Leibniz Institute for Plasma Science and Technology, Greifswald, Germany — ²University of Rostock, Rostock, Germany

First attempts to use Dielectric Barrier Discharges (DBDs) for the conversion of carbon dioxide (CO₂) date back to the 1990’s, and found a renewed interest in the 2010’s due to the energy transition, i.e., the demand for PtX technologies for the generation of fuels or chemicals. DBDs still lack on energy efficiency, but provide a simple and robust design for plasma reactors. In contrast to the studies of microwave discharges, the impact of gas flow distribution in DBDs reactors is still a rather unexplored field. In this study, a 3D printer is used to realize DBD discharge chambers with a predefined gas flow pattern. Thus, the high flexibility of rapid prototyping enables to correlate fluid dynamic simulations with the plasmachemical performance of CO₂ splitting. DBD reactors are made of methacrylic acid polymer and have an overall dimension of 120 x 120 mm, with a powered electrode size of 55 x 55 mm, placed in the center. The influence of flow mechanics is investigated in three DBD reactors with different gas flow patterns and velocity profiles. Besides CO₂ splitting in pure CO₂, ozone generation in air is studied. It is shown that CO or O₃ yield can be influenced by the flow pattern and gas flow rate.