Electrical and Reaction Performances of Packed-bed Plasma Reactors Moderated with Ferroelectric or Dielectric Materials
The operational behavior of packed bed plasma reactors depends on the dimension, shape and chemical properties of the pellets used as moderators, but little information exists about the influence of their specific dielectric properties. Herein, we comparatively study the electrical behavior of a pac...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/223166 |
| Acceso en línea: | http://hdl.handle.net/10261/223166 |
| Access Level: | acceso abierto |
| Palabra clave: | Packed bed reactors Dielectric barrier discharge (DBD) Ferroelectrics Atmospheric pressure plasma Ammonia synthesis Impedance spectroscopy |
| Sumario: | The operational behavior of packed bed plasma reactors depends on the dimension, shape and chemical properties of the pellets used as moderators, but little information exists about the influence of their specific dielectric properties. Herein, we comparatively study the electrical behavior of a packed bed reactor filled with pellets of either dielectric (Al2O3, glass) or ferroelectric (BaTiO3, PZT) materials. We found that plasma current was higher for ferroelectrics and presented a non-lineal dependence with voltage. Moreover, for BaTiO3, it experienced a drastic decrease at around its relatively low Curie temperature. Differences in electrical behavior have a direct effect on reactor performance as illustrated for the ammonia synthesis, demonstrating the importance of moderator material dielectric properties and their dependence on temperature |
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