SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.5: Poster

Mittwoch, 22. März 2023, 17:30–19:00, HSZ EG

Durability of metal-organic-frameworks (MOFs) in non-equilibrium atmospheric pressure plasmas — •Alexander Quack¹, Kerstin Sgonina¹, Hauke Rohr², Norbert Stock², and Jan Benedikt¹ — ¹Institute of Experimental and Applied Physics, Kiel University — ²Institute of Inorganic Chemistry, Kiel University

Metal-organic-frameworks (MOFs) have a large surface area and different metallic structures, which gives them good catalytic properties. Nevertheless, MOFs mostly can not withstand high temperatures, which are needed for their activation in classical catalytic reactions. Non-equilibrium atmospheric pressure plasmas provide reactive and internally excited particles and allow for plasma assisted catalysis at lower temperatures. For these processes MOFs can be used as a catalyst, if they withstand the plasma conditions.

We have developed a dielectric barrier discharge (DBD) reactor (21 kHz, up to 17 kV_pp) to determine the stability and suitability of different MOFs for plasma assisted catalysis. Reactive plasmas using gas mixtures based on N₂, H₂ and CO₂ gases and post- and in-plasma treatment under externally controlled temperature up to 200 ^∘C have been applied to several MOFs including Zif-8, Zif-67 and MAF-6. Structural MOF analysis (XRD, FTIR) allows us to judge the stability of the MOF in the applied plasma treatments.