Detection of methane in oxygen-poor atmospheres using a catalytic asymmetric sensor design

A catalytic sensor for the detection of methane in oxygen-poor atmospheres has been tested. This sensor is based on the difference in catalytic activity of a ruthenium and a platinum electrode for the reaction of methane and CO 2 to hydrogen. The electrolyte used is SrCe 0.95Yb 0.05O 3−α (SCYb5), a...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2001-04, Vol.75 (1), p.111-120
Main Authors: van Rij, L.N, van Landschoot, R.C, Schoonman, J
Format: Article
Language:English
Subjects:
Catalytic sensor
Methane
Proton conductor
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Summary:A catalytic sensor for the detection of methane in oxygen-poor atmospheres has been tested. This sensor is based on the difference in catalytic activity of a ruthenium and a platinum electrode for the reaction of methane and CO 2 to hydrogen. The electrolyte used is SrCe 0.95Yb 0.05O 3−α (SCYb5), a high-temperature proton conductor. The sensor shows a good response to methane at 500°C in a concentration range of 1–90 kPa with a small dependence on the CO 2 concentration, especially, at low methane partial pressures (
ISSN:0925-4005
1873-3077
DOI:10.1016/S0925-4005(01)00542-1