Overcoming Discharge Inhibition in n-Butane Oxidation: Two-Component BaTiO3 and Mn-Cu Mixed Oxide Coatings
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912322216263680 |
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| author | Oppotsch, Timothy Oberste-Beulmann, Christian Böddecker, Alexander Hübner, Gerrit Korolov, Ihor Awakowicz, Peter Muhler, Martin |
| author_facet | Oppotsch, Timothy Oberste-Beulmann, Christian Böddecker, Alexander Hübner, Gerrit Korolov, Ihor Awakowicz, Peter Muhler, Martin |
| contents | A twin surface dielectric barrier discharge on the microsecond scale was used in combination with a two-component coating to oxidize 300 ppm n-butane as a model volatile organic compound to CO2 and H2O in synthetic air at room temperature and at 160 °C. The integration of BaTiO3 as a base material for the coating allowed the successful use of otherwise discharge-ignition-inhibiting materials such as MnO2-CuO applied as a full coating. Application of pure BaTiO3 led to highly porous coatings that do not hinder the discharge ignition and show a negligible influence on n-butane conversion while reducing byproduct formation. Thus, BaTiO3 was identified as a suitable structure-directing agent in two-component coatings, using 1:1 and 1:2 ratios of BaTiO3:catalyst coatings. Coated electrode configurations were compared to their respective uncoated state to highlight the coating-induced changes. The two-component coatings strongly increased the CO2 selectivity, reaching a maximum of 91.6 % at an energy density of 450 J/L and 160 °C for the 1:2 ratio, corresponding to an increase of 51.0 % relative to the uncoated electrode. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_08998 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Overcoming Discharge Inhibition in n-Butane Oxidation: Two-Component BaTiO3 and Mn-Cu Mixed Oxide Coatings Oppotsch, Timothy Oberste-Beulmann, Christian Böddecker, Alexander Hübner, Gerrit Korolov, Ihor Awakowicz, Peter Muhler, Martin Plasma Physics Materials Science A twin surface dielectric barrier discharge on the microsecond scale was used in combination with a two-component coating to oxidize 300 ppm n-butane as a model volatile organic compound to CO2 and H2O in synthetic air at room temperature and at 160 °C. The integration of BaTiO3 as a base material for the coating allowed the successful use of otherwise discharge-ignition-inhibiting materials such as MnO2-CuO applied as a full coating. Application of pure BaTiO3 led to highly porous coatings that do not hinder the discharge ignition and show a negligible influence on n-butane conversion while reducing byproduct formation. Thus, BaTiO3 was identified as a suitable structure-directing agent in two-component coatings, using 1:1 and 1:2 ratios of BaTiO3:catalyst coatings. Coated electrode configurations were compared to their respective uncoated state to highlight the coating-induced changes. The two-component coatings strongly increased the CO2 selectivity, reaching a maximum of 91.6 % at an energy density of 450 J/L and 160 °C for the 1:2 ratio, corresponding to an increase of 51.0 % relative to the uncoated electrode. |
| title | Overcoming Discharge Inhibition in n-Butane Oxidation: Two-Component BaTiO3 and Mn-Cu Mixed Oxide Coatings |
| topic | Plasma Physics Materials Science |
| url | https://arxiv.org/abs/2504.08998 |