| Autor: | T. Honma, Yoshio Ukyo, S. Morishita, Tetsuro Kobayashi, Hiroyasu Iwahara, Katsushi Abe |
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| Rok vydání: | 2000 |
| Předmět: |
Controlled atmosphere
Materials science Thermodynamic equilibrium Mechanical Engineering Inorganic chemistry Oxide chemistry.chemical_element Quaternary compound Nitrogen chemistry.chemical_compound chemistry Mechanics of Materials Specific surface area General Materials Science Chemical stability NOx |
| Zdroj: | Journal of Materials Science. 35:5283-5289 |
| ISSN: | 0022-2461 |
| DOI: | 10.1023/a:1004878308597 |
| Popis: | The stability of the SrZr0.9Yb0.1O3−α protonic conductor in an atmosphere containing nitrogen oxides (NO x ) was investigated. When a fine powder of SrZr0.9Yb0.1O3−α with a specific surface area of about 50 m2/g was annealed at 440 °C in He gas containing 8% O2 and 0.1% NO, the formation of Sr(NO3)2 was observed by IR measurement, ion-chromatography analysis and ICP analysis. The formation mechanism of Sr(NO3)2 was examined by considering the thermodynamic equilibrium. Based on the results of the thermodynamic calculation, H2O dissolved into SrZr0.9Yb0.1O3−α was estimated to play an important role in the reaction for the formation of Sr(NO3)2 between SrZr0.9Yb0.1O3−α and NO x . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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