XAFS analysis of ruthenium in simulated iron phosphate radioactive waste glass
| Autor: | Kiyoshi Hatakeyama, Hideaki Shiwaku, Hidekazu Kobayashi, Yoshihiro Okamoto, Takayuki Nagai, Ken-ichi Sasage |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Extended X-ray absorption fine structure Borosilicate glass Inorganic chemistry Radioactive waste chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials X-ray absorption fine structure Ruthenium Chemical state chemistry 0103 physical sciences Materials Chemistry Ceramics and Composites Vitrification Iron phosphate 0210 nano-technology |
| Zdroj: | Journal of Non-Crystalline Solids. 551:120393 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2020.120393 |
| Popis: | The chemical state of ruthenium in simulated iron phosphate radioactive waste glass was investigated by conventional X-ray absorption fine structure (XAFS) and imaging XAFS analyses. The EXAFS analysis suggested that ruthenium was contained as glass phase when content of the waste components was less than 10 wt.% in 30 mol%Fe2O3-P2O5 base glass. In other samples, crystalline RuO2 was observed and became prominent with the increase of waste content. According to the imaging XAFS analysis, RuO2 particles in all samples had length smaller than 50 μm. Large size aggregations of RuO2, which are found frequently in nuclear waste borosilicate glass, were not seen in any of the iron phosphate glass samples. |
| Databáze: | OpenAIRE |
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