On the behaviour of Eu oxo-species in molten NaBr–NaI (0.77:0.23) mixture at 973 K
| Autor: | A.L. Rebrov, Victor L. Cherginets, T.P. Rebrova, Oleg Ivanovych Yurchenko |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Dispersity Inorganic chemistry Iodide 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Mole fraction Surface energy Electronic Optical and Magnetic Materials Ion Sodium bromide chemistry.chemical_compound 020401 chemical engineering chemistry Bromide Materials Chemistry 0204 chemical engineering Physical and Theoretical Chemistry Solubility 0210 nano-technology |
| Zdroj: | Physics and Chemistry of Liquids. 55:248-253 |
| ISSN: | 1029-0451 0031-9104 |
| DOI: | 10.1080/00319104.2016.1198484 |
| Popis: | The interaction of Eu2O3 with molten NaBr–NaI (0.77:0.23) mixture at 973 K was studied by sequential addition method with the use of YSZ membrane oxygen electrode for controlling of course of the process. The Red-Ox process is accompanied with formation of EuO in the melt. The total solubility of EuO (sum of concentration of Eu2+, O2–, non-dissociated EuO) in the molten NaBr–NaI at 973 K (mole fraction 2.7 × 10–4) is considerably lower than in pure NaI melt (4.2 × 10–4), which can be explained using the ‘hole’ model by reduction of a number of holes of comparable with EuO particle size because of addition of smaller bromide ion to the iodide melt.The solubility of EuO is appreciably affected by its dispersity and the value of surface energy causing these solubility changes is estimated as 37 J m–2. |
| Databáze: | OpenAIRE |
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