The group "Experimental Physics II - Reactive Plasmas" at the faculty of physics and astronomy at Ruhr University Bochum.
Surface dielectric barrier discharges (sDBD) are efficient and scalable plasma sources for plasma-based gas conversion. One prominent feature of an sDBD in this application is its ionic wind, which exerts a force on the neutrals, thus leading to...
Hydrogen production via plasma methane pyrolysis is investigated using a microwave plasma torch (MPT) and a gliding arc plasmatron (GAP). The performance of the two plasma sources in terms of methane conversion, product spectrum, and energy...
Hydrogen is often envisioned as a green fuel and energy carrier. However, a greenhouse gas-free production method is still needed for this purpose. A promising method is the pyrolysis of methane. Here, we present the 3-dimensional simulation of...
NO synthesis using plasma catalysis is analyzed in a parallel-plate atmospheric pressure RF plasma from N$_2$/O$_2$ admixed to helium exposed to Fe and Pt catalysts on a SiO$_2$ support. The NO$_x$ species are measured by Fourier-transform...
Dielectric barrier discharges (DBD) are often used for gas conversion, such as carbon dioxide splitting, volatile organic compound removal or ozone generation. Due to the tiny plasma filaments in DBD discharges, efficient mixing of the gas flow...
The plasma catalytic oxidation of n-butane diluted in a helium-oxygen RF plasma jet is used to study volatile organic compound (VOC) removal to unravel plasma catalytic synergisms. The plasma conversion is tested for a stoichiometric n-butane...
The in-plasma-catalytic synthesis of ammonia from nitrogen and hydrogen admixed to a helium RF plasma is studied with infrared absorption spectroscopy, optical emission spectroscopy, and through chemical kinetics modeling. Sandblasted glass is...
Magnitude of the electric field of the microwave plasma torch simulated with ansys HFSS
Ion-induced secondary electron emission at a target surface is an essential mechanism for laboratory plasmas, i.e. magnetron sputtering discharges. Electron emission, however, is strongly affected by the target condition itself such as oxidation...
Pyrolysis of methane is a promising, new, greenhouse gas-free production method of hydrogen. Here, we present optical emission spectra of a microwave plasma torch operated in an argon methane mixture. Detailed spatial resolution is achieved by...
