Catalytic and thermal characterisations of nanosized PdPt / Al2O3 for hydrogen detection
| العنوان: | Catalytic and thermal characterisations of nanosized PdPt / Al2O3 for hydrogen detection |
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| المؤلفون: | Mazingue, T., Lomello-Tafin, M., Passard, M., Hernandez-Rodriguez, C., Goujon, L., Rousset, J.-L., Morfin, F., Laithier, J.-F. |
| المساهمون: | Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Comelec SA, ANR P3N 2009, ANR-09-NANO-0015,PEPS(2009) |
| المصدر: | Journal of Sensors and Sensor Systems Journal of Sensors and Sensor Systems, Copernicus Publ, 2014, Special Issue: Advanced functional materials for environmental monitoring and applications, 3, pp.273-280. ⟨10.5194/jsss-3-273-2014⟩ Journal of Sensors and Sensor Systems, Vol 3, Iss 2, Pp 273-280 (2014) |
| بيانات النشر: | HAL CCSD, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | platinum catalyst, gas sensors, lcsh:T, hydrogen detection, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], lcsh:Technology, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials |
| الوصف: | Palladium platinum (PdPt) has been intensively studied these last decades due to high conversion rate in hydrogen oxidation at room temperature with significant exothermic effects. These remarkable properties have been studied by measuring the temperature variations of alumina (Al2O3) supported nanosized PdPt nanoparticles exposed to different hydrogen concentrations in dry air. This catalyst is expected to be used as a sensing material for stable and reversible ultrasensitive hydrogen sensors working at room temperature (low power consumption). Structural and gas sensing characterisations and catalytic activity of PdPt / Al2O3 systems synthesised by co-impregnation will be presented. Catalytic characterisations show that the system is already active at room temperature and that this activity sharply increases with rise in temperature. Moreover, the increase of the PdPt proportion in the co-impregnation process improves the activity, and very high conversion can be reached even at room temperature. The thermal response (about 3 °C) of only 1 mg of PdPt / Al2O3 is reversible, and the time response is about 5 s. The integration of PdPt / Al2O3 powder on a flat substrate has been realised by the deposition onto the powder of a thin porous hydrophobic layer of parylene. The possibility of using PdPt in gas sensors will be discussed. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2194-878X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6fa4dad844f49ba1d103f4920f75d3a5 https://hal.archives-ouvertes.fr/hal-01082926/document |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.dedup.wf.001..6fa4dad844f49ba1d103f4920f75d3a5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 2194878X |
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