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Material Influence on Characteristics of Zeolite Based Hydrocarbon Gas Sensor

Title data

Dubbe, Andreas ; Moos, Ralf:
Material Influence on Characteristics of Zeolite Based Hydrocarbon Gas Sensor.
Event: 16th International Conference on Solid State Ionics , 01.-06.07.2007 , Shanghai, China.
(Conference item: Conference , Other Presentation type)

Project information

Project title:
Project's official title
Project's id
No information
MO 1060/4-2

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Potentiometric solid electrolyte gas sensors are well known for their fast and reproducible response characteristics, in general independent on the microstructure. Various gases can be detected with this sensor principle by using specific sensitive materials. We have suggested ion conducting zeolites as sensitive materials for potentiometric hydrocarbon gas sensors. The zeolite ZSM-5 is moderately ion conductive and adsorbs gases in its micropores. A sensor using this material showed a reversible and not too slow voltage response to alkanes . However, sensitivity decreased and finally approached zero for alkane concentrations below certain limit values. This was explained with a mechanistic model in which a change of Na+ ion activity due to alkane sorption is assumed as a cause for the potential change. In the present contribution, we report on the influence of zeolite material composition on sensing characteristics for C3H8, down to 100 ppm concentration. The aim was to further clarify the sensing mechanism and to improve the sensitivity in the low-concentration range.

Further data

Item Type: Conference item (Other)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties > Faculty of Engineering Science > Chair Functional Materials
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 Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 08 Jun 2015 07:22
Last Modified: 06 Apr 2016 08:10