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Vanadia doped tungsten-titania SCR catalysts as functional materials for exhaust gas sensor applications

Title data

Schönauer-Kamin, Daniela ; Sichert, Ina ; Moos, Ralf:
Vanadia doped tungsten-titania SCR catalysts as functional materials for exhaust gas sensor applications.
In: Sensors and Actuators B: Chemical. Vol. 155 (2011) . - pp. 199-205.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2010.11.046

Official URL: Volltext

Abstract in another language

Urea-SCR systems (selective catalytic reduction) are required to meet future NOx emission standards of heavy-duty and light-duty vehicles. It is a key factor to control the SCR systems and to monitor the catalysts’ functionalities to achieve low emissions. The novel idea of this study is to apply commercially available SCR catalyst materials based on vanadia-doped tungsten–titania as gas sensing films for impedimetric thick-film exhaust gas sensor devices. The dependence of the impedance on the surrounding gas atmosphere, especially on the concentrations of NH3 and NO2, is investigated, as well as cross interferences from other components of the exhaust. The sensors provide a good NH3 sensitivity at 500 °C. The sensor behavior is explained in light of the literature combining the fields of catalysts and semiconducting gas sensors.

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: 19 Jan 2015 08:13
Last Modified: 13 Apr 2016 06:36
URI: https://eref.uni-bayreuth.de/id/eprint/5608