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P: Fachverband Plasmaphysik
P 16: Atmospheric Pressure Plasmas and their Applications III
P 16.2: Vortrag
Mittwoch, 28. Februar 2024, 14:30–14:45, WW 1: HS
Development of a hybrid reactor for plasma-enhanced electrocatalysis for NH3 production — •Martin Leander Marxen1, Luka Hansen1, Gustav Sievers2, Volker Brüser2, and Holger Kersten1 — 1Plasmatechnology Group, IEAP, Kiel University, Kiel, Germany — 2Plasma Process Technology, INP Greifswald, Greifswald, Germany
Plasma-catalytic approaches are promising for the conversion of mixtures of nitrogen (N2) and hydrogen (H2) into ammonia (NH3) [1,2]. Activation of the reaction sluggish N2 molecules is achieved by collisions with the highly energetic electrons present in the discharge.
In proton-exchange-membrane-electrolysis (PEM-electrolysis), water (H2O) is split up into oxygen (1/2 O2), protons (2 H+) and electrons (2 e−) at the anode. The protons permeate the membrane and are reduced at the cathode [3].
A hybrid reactor was developed, in which a surface dielectric barrier discharge (SDBD) is located right underneath the cathode of a PEM-cell. By operating the SDBD with N2, excited, ionized and dissociated N2 species will be present at the cathode of the PEM-cell, where they can react with the produced H / H+ and, thus, be reduced to NH3. The development and characterization of the reactor will be presented.
[1] K. H. R. Rouwenhorst, Green chem 22 (2020), 19
[2] A. Bogaerts et al., J Phys D: Appl Phys 53 (2020), 44
[3] S. S. Kumar und V. Himabindu, Mater Sci for Energy Technol 2 (2019), 3
Keywords: plasma-enhanced electrocatalysis; ammonia production; surface dielectric barrier discharge; PEM-electrolysis