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Hagen, Gunter ; Leupold, Nico ; Wiegärtner, Sven ; Moos, Ralf:
Sensor Tool for Fast Catalyst Material Characterization.
In: Topics in Catalysis.
Bd. 60
(2017)
Heft 3
.
- S. 312-317.
ISSN 1572-9028
DOI: https://doi.org/10.1007/s11244-016-0617-8
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 temperature 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 acetylene poisoning.