Development and Working Principle of an Ammonia Gas Sensor based on a Refined Model for Solvate Supported Proton Transport in Zeolites

Title data

Franke, Marion E. ; Simon, Ulrich ; Moos, Ralf ; Knezevic, Aleksandar ; Müller, Ralf ; Plog, Carsten:
Development and Working Principle of an Ammonia Gas Sensor based on a Refined Model for Solvate Supported Proton Transport in Zeolites.
In: Physical Chemistry Chemical Physics. Vol. 5 (2003) Issue 23 . - pp. 5195-5198.
ISSN 1463-9084
DOI: https://doi.org/10.1039/b307502h

Official URL:

Abstract in another language

Some of the work relating to the development of a selective ammonia exhaust gas sensor are reported in this contribution. The sensor itself meets all the technological and economic demands of the automotive industry. As the gas-sensitive material the proton conducting zeolite H-ZSM-5 is used. The selective and concentration dependent interaction of the mobile protons with ammonia, i.e., the resulting change in proton conductivity, is detected directly by means of impedance spectroscopy. The sensor development was supported by a detailed picture of ammonia supported proton transport, deduced from impedance measurements on H-ZSM-5 with different SiO2/Al2O3 ratios in a wide temperature and frequency range. It provides understanding of the transport control parameters, e.g. temperature, composition of the zeolite structure and concentration of the guest molecules, respectively.

Further data

Item Type:	Article in a journal
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 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:	03 Feb 2015 06:23
Last Modified:	05 Apr 2016 06:45
URI:	https://eref.uni-bayreuth.de/id/eprint/6159