XAFS analysis of ruthenium in simulated iron phosphate radioactive waste glass

Okamoto, Yoshihiro ; Kobayashi, Hidekazu ; Shiwaku, Hideaki ; Sasage, Kenichi; Hatakeyama, Kiyoshi*; Nagai, Takayuki

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 10wt.% in 30 mol%Fe $_{2}$ O $_{3}$ -P $_{2}$ O $_{5}$ base glass. In other samples, crystalline RuO $_{2}$ was predominant. According to the imaging XAFS analysis, RuO $_{2}$ particles in all samples had length smaller than 50m. Aggregations of RuO $_{2}$ , which are found in nuclear waste borosilicate glass, were not seen in any of the iron phosphate glass samples.

Language	:	English
Journal	:	Journal of Non-Crystalline Solids
Volume	:	551
Number	:
Pages	:	p.120393_1 - 120393_8
Publication Year/Month	:	2021/01
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Paper URL	:	https://doi.org/10.1016/j.jnoncrysol.2020.120393
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	ガラス固化; 鉄リン酸ガラス; XAFS; イメージング
Research Facility	:	SPring-8(大型放射光施設)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	経済産業省資源エネルギー庁

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Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:33.79 Category:Materials Science, Ceramics
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Registration No. : AA20200354
JAEA Abstracts No. : 48001180
Paper Submission No. : 23428

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