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Ammonia Loading Detection of Zeolite SCR Catalysts using a Radio Frequency based Method

Title data

Rauch, Dieter ; Kubinski, David J. ; Cavataio, Giovanni ; Upadhyay, Devesh ; Moos, Ralf:
Ammonia Loading Detection of Zeolite SCR Catalysts using a Radio Frequency based Method.
In: SAE International Journal of Engines. Vol. 8 (2015) Issue 3 . - pp. 1126-1135.
ISSN 1946- 3936
DOI: https://doi.org/10.4271/2015-01-0986

Project information

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

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Ammonia adsorption on the catalyst surface is a crucial step in the selective catalytic reduction of nitrogen oxides over zeolites with NH3 as the reducing agent. In this study, two small pore zeolites with chabazite frameworks, H-SSZ-13 and Cu exchanged SSZ-13, are examined. Adsorption of NH3 on the zeolite causes changing electrical properties of the material. They can be detected by a radio frequency based technique. We have found that with this method it is possible to determine the amount of adsorbed NH3 on these catalysts, examining both the influences of temperature and NH3/NO feed gas ratio. At constant temperature, a fairly linear correlation between the resonance frequency and the amount of adsorbed ammonia was observed. Furthermore, this method also allows differentiation between some of the NH3 adsorption sites.

Further data

Item Type: Article in a journal
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 > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 13 Jul 2015 11:29
Last Modified: 18 Apr 2016 07:28
URI: https://eref.uni-bayreuth.de/id/eprint/16155