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A microwave-based method to monitor the ammonia loading of a vanadia-based SCR catalyst

Title data

Rauch, Dieter ; Albrecht, Gaby ; Kubinski, David J. ; Moos, Ralf:
A microwave-based method to monitor the ammonia loading of a vanadia-based SCR catalyst.
In: Applied Catalysis B: Environmental. Vol. 165 (2015) . - pp. 36-42.
ISSN 0926-3373
DOI: https://doi.org/10.1016/j.apcatb.2014.09.059

Official URL: Volltext

Abstract in another language

For the selective catalytic reduction (SCR) of nitrogen oxides (NOx) from lean burn diesel engines, NH3 is used as reducing agent. In the case of V2O5–WO3 catalysts supported on TiO2 (anatase) ceramics, an adsorption of NH3 on the catalyst surface is required for the SCR reactions. To effectively control the NH3 supply and to obtain detailed knowledge on the catalyst status, it is crucial to know the current adsorbed amount of ammonia on the catalyst. It is shown for the first time in this study that it is possible to determine the ammonia loading of V2O5–WO3 catalysts contactless and in operando by a simple microwave-based approach. This method can be applied for different temperatures. It is possible to determine the stored amount of ammonia independently on the ammonia-to-NOx feed ratio.

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
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties
Research Institutions
Research Institutions > Research Units
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 Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 15 Dec 2014 07:46
Last Modified: 18 Apr 2016 07:17
URI: https://eref.uni-bayreuth.de/id/eprint/4956