Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 13: Atmospheric Pressure Plasmas II
P 13.3: Vortrag
Mittwoch, 18. März 2026, 17:00–17:15, KH 01.020
characteristics of plasma catalytic conversion of n-Butane in micro cavity plasma array — •Yue Cheng1, Henrik Van Impel1, David Steuer1, Volker Schulz-von Der Gathen2, Marc Böke2, and Judith Golda1 — 1Plasma Interface Physics, Ruhr-University Bochum, D-44801 Bochum, Germany — 2Experimental Physics II: Physics of Reactive Plasmas, Ruhr-University Bochum, D-44801 Bochum, Germany
n-Butane is a common volatile organic compound in automotive exhaust and exhibits acute toxicity, so its efficient and harmless removal is important for environmental and public health. This study investigates DBD plasma conversion of n-Butane by FTIR in MCPA, focusing on the effects of gas composition, catalyst and temperature on conversion and product selectivity. Introducing MnO2, BiTiO3 or BiVO4 as catalyst substantially reduces the number of ignited cavities and lowers the maximum conversion to 20%, indicating an anti-synergistic interaction between these catalysts and the present discharge configuration. For BiVO3 and BiTiO4 raising the catalyst surface temperature accelerates carbon deposition on the dielectric, which further suppresses reaction efficiency. However, BiVO4 shows the lowest carbon loss and BiTiO3 gives the smallest unassigned fraction in the product selectivity, meanwhile MnO2 delivers the highest conversion at elevated temperatures up to 34%. Overall, developing plasma catalytic systems with enhanced anti-coking properties is key to improving conversion rates and steering selectivity toward target products. This work is supported by DFG within SFB1316 (A6).
Keywords: n-Butane; DBD; MnO2; BiTiO3; BiVO4