Selective Mixed Potential Ammonia Exhaust Gas Sensor for Harsh Environments

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Schönauer-Kamin, Daniela ; Moos, Ralf ; Wiesner, Kerstin ; Fleischer, Maximilian:
Selective Mixed Potential Ammonia Exhaust Gas Sensor for Harsh Environments.
In: Proceedings SENSOR 2009. - Wunstorf : AMA Verband für Sensorik und Messtechnik e.V. , 2009 . - S. 407-410
ISBN 978-3-9810993-5-5
DOI: https://doi.org/10.5162/sensor09/v2/p5.6

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Abstract

An ammonia exhaust gas sensor for harsh environments enables to control the NH3 emission downstream an SCR (selective catalytic reduction) catalyst, which is used to reduce the NOx emissions of diesel engines and industrial plants. A novel mixed potential NH3 exhaust gas sensor for selective NH3 detection showed in synthetic exhaust a very good correlation between sensor voltage and NH3 concentration with a marginal NOx cross interference. First tests in real exhaust gas to proof the applicability showed promising results.