Ammonia flue gas sensors for SCR applications : A comparison between zeolite-based capacitive sensors and mixed-potential sensors utilizing vanadia-based electrodes

Title data

Moos, Ralf ; Wöhrl, Thomas ; Donker, Nils ; Schönauer-Kamin, Daniela ; Hagen, Gunter:
Ammonia flue gas sensors for SCR applications : A comparison between zeolite-based capacitive sensors and mixed-potential sensors utilizing vanadia-based electrodes.
2025
Event: Eurosensors XXXVII , September 7-10, 2025 , Wroclaw, Poland.
(Conference item: Conference , Speech )
DOI: https://doi.org/10.5162/EUROSENSORS2025/T5.1.2

Official URL:

Abstract in another language

Two different, planar, and very selective ammonia sensor types are compared in this study with regard to their applicability in flue gas from biomass combustion processes: a YSZ-based mixed potential sensor and a zeolite-based capacitive sensor. Both are operated at several hundred °C. The zeolite sensor shows a small cross-sensitivity to water vapor, whereas the signal of the mixed-potential sensor depends on O₂, especially at lower oxygen concentrations. In both cases the signal can be corrected by a lambda-probe. Both sensors behave well in real exhausts, both in flue gas and in real engine exhausts.

Further data

Item Type:	Conference item (Speech)
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos Profile Fields > Advanced Fields > Advanced Materials Research Institutions > Central research institutes > Bayreuth Center for Material Science and Engineering - BayMAT Research Institutions > Research Units > Zentrum für Energietechnik - ZET
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	13 Nov 2025 08:07
Last Modified:	13 Nov 2025 08:07
URI:	https://eref.uni-bayreuth.de/id/eprint/95204