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Detection of the ammonia loading of a zeolite SCR-catalyst by a radio frequency-based method

Title data

Rauch, Dieter ; Kubinski, David J. ; Simon, Ulrich ; Moos, Ralf:
Detection of the ammonia loading of a zeolite SCR-catalyst by a radio frequency-based method.
2014
Event: The 15th International Meeting on Chemical Sensors, IMCS 15 , 16.-19.03.2014 , Buenos Aires, Argentina.
(Conference item: Conference , Other Presentation type)

Related URLs

Project information

Project title:
Project's official titleProject's id
No informationMo 1060/19-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Zeolites are in use as catalyst materials in the selective catalytic reduction of NOx with NH3 as reducing agent. An initial NH3-adsorption on the catalyst is essential for the reaction with NO and NO2 to occur. Due to the adsorbed NH3, the proton conductivity of the zeolite increases markedly. As shown in this work, this change of the electrical properties of the catalyst material can be monitored in a contactless way and in-operando using a radio frequency-based method. Therein, the metallic catalyst housing serves as cavity resonator in which microwaves are excited. The electrical properties of the resonator filling affect the resonance behavior. Hence, the ammonia loading of the catalyst can be monitored directly.

Further data

Item Type: Conference item (Other)
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
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 13 May 2015 07:09
Last Modified: 15 Apr 2016 07:53
URI: https://eref.uni-bayreuth.de/id/eprint/13179