Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases
A novel miniaturized calorimeter-type sensor device with a dual-catalyst structure was fabricated by integrating different catalysts on the hot (Pd/θ-Al2O3) and cold (Pt/α-Al2O3) ends of the device. The device comprises a calorimeter with a thermoelectric gas sensor (calorimetric-TGS), combining cat...
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| Format: | Article |
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MDPI AG
2014-05-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/14/5/8350 |
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| author | Nam-Hee Park Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin |
| author_facet | Nam-Hee Park Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin |
| author_sort | Nam-Hee Park |
| collection | DOAJ |
| description | A novel miniaturized calorimeter-type sensor device with a dual-catalyst structure was fabricated by integrating different catalysts on the hot (Pd/θ-Al2O3) and cold (Pt/α-Al2O3) ends of the device. The device comprises a calorimeter with a thermoelectric gas sensor (calorimetric-TGS), combining catalytic combustion and thermoelectric technologies. Its response for a model fuel gas of hydrogen and methane was investigated with various combustor catalyst compositions. The calorimetric-TGS devices detected H2, CH4, and a mixture of the two with concentrations ranging between 200 and 2000 ppm at temperatures of 100–400 °C, in terms of the calorie content of the gases. It was necessary to reduce the much higher response voltage of the TGS to H2 compared to CH4. We enhanced the H2 combustion on the cold side so that the temperature differences and response voltages to H2 were reduced. The device response to H2 combustion was reduced by 50% by controlling the Pt concentration in the Pt/α-Al2O3 catalyst on the cold side to 3 wt%. |
| first_indexed | 2024-04-11T14:03:26Z |
| format | Article |
| id | doaj.art-36aa91b365504ccaac131290848ef144 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T14:03:26Z |
| publishDate | 2014-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-36aa91b365504ccaac131290848ef1442022-12-22T04:19:58ZengMDPI AGSensors1424-82202014-05-011458350836210.3390/s140508350s140508350Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed GasesNam-Hee Park0Takafumi Akamatsu1Toshio Itoh2Noriya Izu3Woosuck Shin4National Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 4638560, JapanNational Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 4638560, JapanNational Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 4638560, JapanNational Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 4638560, JapanNational Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 4638560, JapanA novel miniaturized calorimeter-type sensor device with a dual-catalyst structure was fabricated by integrating different catalysts on the hot (Pd/θ-Al2O3) and cold (Pt/α-Al2O3) ends of the device. The device comprises a calorimeter with a thermoelectric gas sensor (calorimetric-TGS), combining catalytic combustion and thermoelectric technologies. Its response for a model fuel gas of hydrogen and methane was investigated with various combustor catalyst compositions. The calorimetric-TGS devices detected H2, CH4, and a mixture of the two with concentrations ranging between 200 and 2000 ppm at temperatures of 100–400 °C, in terms of the calorie content of the gases. It was necessary to reduce the much higher response voltage of the TGS to H2 compared to CH4. We enhanced the H2 combustion on the cold side so that the temperature differences and response voltages to H2 were reduced. The device response to H2 combustion was reduced by 50% by controlling the Pt concentration in the Pt/α-Al2O3 catalyst on the cold side to 3 wt%.http://www.mdpi.com/1424-8220/14/5/8350calorimeterthermoelectric gas sensordual catalystmethanehydrogen |
| spellingShingle | Nam-Hee Park Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases Sensors calorimeter thermoelectric gas sensor dual catalyst methane hydrogen |
| title | Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases |
| title_full | Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases |
| title_fullStr | Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases |
| title_full_unstemmed | Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases |
| title_short | Calorimetric Thermoelectric Gas Sensor for the Detection of Hydrogen, Methane and Mixed Gases |
| title_sort | calorimetric thermoelectric gas sensor for the detection of hydrogen methane and mixed gases |
| topic | calorimeter thermoelectric gas sensor dual catalyst methane hydrogen |
| url | http://www.mdpi.com/1424-8220/14/5/8350 |
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