Göttingen 2025 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 2: Atmospheric Plasmas and their Applications I
P 2.5: Vortrag
Montag, 31. März 2025, 15:15–15:30, ZHG006
thermal characteristics of microarray DBD in helium — •Yue Cheng1, Henrik van Impel1, David Steuer1, Judith Golda1, and Marc Böke2 — 1Plasma Interface Physics, Ruhr-University Bochum, D-44801 Bochum, Germany — 2Experimental Physics II: Physics of Reactive Plasmas, Ruhr-University Bochum, D-44801 Bochum, Germany
The urgent demand for efficient and sustainable chemical processes has driven interest in plasma-assisted catalytic methods, particularly for n-butane conversion, for their ability to promote energy-efficient reactions. Reaction kinetics and conversion rates are highly temperature-dependent, making it critical to investigate the effects of elevated temperatures on plasma chemistry. To address this, we optimized our reactor specifically for high-temperature applications. The reactor incorporates a neodymium magnet embedded in a MACOR carrier as the grounded electrode. A heating system positioned beneath the magnet, capable of reaching up to 350°C. A 40μm zirconium dioxide dielectric layer separates the magnet from a nickel grid, which is cut into two 1*1 cm squares with 1 mm gaps featuring substructures of 100 μm and 150 μm. The entire assembly is stabilized using a quartz frame and cover. Experimental results reveal a significant increase in rotational temperature with rising discharge surface temperature, with larger cavity structures exhibiting higher rotational temperatures. This temperature potentially reduces the activation energy for n-butane reactions, thereby enhancing reaction rates and promoting intermediate formation. This work is supported by DFG within SFB1316 (A6).
Keywords: rotational temperature; n butane conversion