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

Rij, L.N van; Landschoot, R.C. van; Schoonman, J.

doi:10.1016/s0925-4005(01)00542-1

Cited by 6 publications

(4 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high chemical stability of the CaZr 0.9 In 0.1 O 3Ϫ␣ electrolyte in a CO 2 -containing atmospheres also contributes to the stability, contrary to the SrCeO 3 -based electrolyte. 4…”

Section: Resultsmentioning

confidence: 99%

“…Semiconductor-based sensors that are able to detect methane up to 10 vol % have been developed. [2][3][4] Their selectivity, however, is not very high. Furthermore, these sensors are all applied in air.…”

mentioning

confidence: 99%

“…To be able to detect methane in natural gas, i.e., in the absence of oxygen, a novel catalytic asymmetrical Nernst-type methane sensor has been developed in our laboratory. 4,6 The detection principle of the sensor is based on the difference in catalytic activity of two electrodes for the CO 2 -reforming reaction of methane. The electrodes were applied on a SrCeO 3 -based solid electrolyte.…”

mentioning

confidence: 99%

“…It has been shown that this catalytic methane sensor is able to detect methane up to 95 vol %. 4,6 However, a problem with the long-term stability of the sensor has been experienced. In this research the stability of the sensor has been improved by using In-doped CaZrO 3 , which is both chemically and thermally very stable, as an electrolyte.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Catalytic Methane Sensor Using a Ni-CaZr[sub 0.9]In[sub 0.1]O[sub 3−α] Cermet Electrode

Rij

Schoonman

2000

J. Electrochem. Soc.

View full text Add to dashboard Cite

A catalytic asymmetrical Nernst-type methane sensor with a porous Ni-CaZr 0.9 In 0.1 O 3Ϫ␣ Cermet electrode has been developed. At 600 and 700ЊC a Nernst-like behavior of the sensor is observed as a function of the methane partial pressure with a slope of 56 and 26 mV/decade, respectively. At 500ЊC a deviation from this behavior is found. The temperature dependence of the sensor response can be explained by the difference in catalytic activity of nickel and platinum. The sensor response depends on the CO 2 concentration, but it is shown that the measured electromotive force can be corrected for the CO 2 concentration in the gas mixture. The presence of water in the gas mixture leads to a decrease of the sensitivity, which can be explained by the different catalytic response of nickel and platinum to the presence of water. The sensor shows good reproducibility and long-term stability. The effect of the gas flow rate on the sensor performance is found to be minimal.

show abstract

“…The high chemical stability of the CaZr 0.9 In 0.1 O 3Ϫ␣ electrolyte in a CO 2 -containing atmospheres also contributes to the stability, contrary to the SrCeO 3 -based electrolyte. 4…”

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations