Articles | Volume 4, issue 2
https://doi.org/10.5194/jsss-4-263-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/jsss-4-263-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular research article
| 
17 Aug 2015
Regular research article |
| 17 Aug 2015
Ammonia storage studies on H-ZSM-5 zeolites by microwave cavity perturbation: correlation of dielectric properties with ammonia storage
M. Dietrich
CORRESPONDING AUTHOR
Bayreuth Engine Research Center (BERC), Zentrum für Energietechnik (ZET), Department of Functional Materials, University of Bayreuth, 95440 Bayreuth, Germany
D. Rauch
Bayreuth Engine Research Center (BERC), Zentrum für Energietechnik (ZET), Department of Functional Materials, University of Bayreuth, 95440 Bayreuth, Germany
U. Simon
Institute of Inorganic Chemistry (IAC), RWTH Aachen University, 52074 Aachen, Germany
A. Porch
School of Engineering, Cardiff University, Cardiff CF24 3AA, Wales, UK
R. Moos
Bayreuth Engine Research Center (BERC), Zentrum für Energietechnik (ZET), Department of Functional Materials, University of Bayreuth, 95440 Bayreuth, Germany
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Latest update: 24 Apr 2025
Short summary
The effect of stored ammonia on the complex dielectric permittivity of H-ZSM-5 zeolites with varying storage site density was observed between 200 and 300 °C under reaction conditions by microwave cavity perturbation. Polarization and dielectric losses were differently affected. The sensitivity of the polarization to stored ammonia is almost independent, the sensitivity of the dielectric losses strongly dependent on the storage site density. The results can be explained by proton hopping.
The effect of stored ammonia on the complex dielectric permittivity of H-ZSM-5 zeolites with...
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