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Hagen, Gunter ; Leupold, Nico ; Wiegärtner, Sven ; Moos, Ralf:
Sensor Tool for Fast Catalyst Material Light-off Characterization.
2015
Veranstaltung: CAPoC10 - 10th International Congress on Catalysis and Automotive Pollution Control
, 28.-30.10.2015
, Brussels, Belgium.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Poster
)
Abstract
For the development of catalyst materials a novel sensor tool is presented. It can determine catalyst light-off temperatures. The device measures temperature changes (exothermicities) due to catalytic reactions of the material which is coated on a very small catalyst coating area directly on the sensor device. By temperature modulation via an integrated heater, light-off characteristics can be determined within a few minutes. In the present contribution, the sensor setup is introduced and several experimental results for an exemplarily investigated Pt-loaded Al2O3 catalyst are shown with typical exhaust gas components and with mixtures of their components in a lean base gas atmosphere. Several typical findings are light-off hysteresis, CO poisoning, alkane light-off-behavior or ethine poisoning.