利用同步辐射XAFS和成像XAFS技术分析模拟废玻璃中铑的化学状态

Atomic Energy Society of Japan Pub Date : 2017-01-01 DOI:10.3327/TAESJ.J16.024

Y. Okamoto, T. Nagai, H. Shiwaku, Takehiko Inose, Sato Seiichi

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引用次数: 0

摘要

采用x射线吸收精细结构(XAFS)和成像XAFS分析阐明了模拟废玻璃中铑的化学状态。根据EXAFS数据的线性组合分析，玻璃中Rh的化学形态为84% RhO 2和16%金属/合金。根据成像XAFS分析，与Ru在一起的Rh的化学形态主要为氧化物(RhO 2)。这表明在模拟玻璃中存在稳定的(Ru,Rh) o2固溶体。另一方面，Rh在玻璃中的分布与Ru不一致，主要是金属性的。玻璃中的金属Rh趋向于形成聚集体。结果表明，Ru的存在和分布对Rh的化学状态有很大影响。

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Chemical State Analysis of Rhodium in Simulated Waste Glass by Synchrotron-Radiation-based XAFS and Imaging XAFS Techniques

X-ray absorption ﬁne structure （ XAFS ） and imaging XAFS analyses were performed to elucidate the chemical state of rhodium in simulated waste glass. The chemical forms of Rh in the glass were evaluated to be 84 ％ RhO 2 and 16 ％ metal / alloy as the result of linear combination analysis of EXAFS data. According to the imaging XAFS analysis, the chemical form of Rh that was located together with Ru was mainly oxide （ RhO 2 ） . This suggests that a stable （ Ru,Rh ） O 2 solid solution exists in the simulated glass. On the other hand, that of Rh whose distribution did not coincide with Ru in the glass was mainly metallic. The metallic Rh in the glass tended to become an aggregate form. It can be concluded that the chemical state of Rh was strongly affected by the existence and distribution of Ru.

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Atomic Energy Society of Japan

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