P5.6 - Selective mixed potential ammonia exhaust gas sensor for harsh environments

Daniela Schoenauer, Ralf Moos, Kerstin Wiesner & Maximilian Fleischer
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...