Spectroscopic study of neptunium complexation in hydrate melts

水合物熔体中镎络合的光谱研究

• 批准号: 20760594
• 负责人: FUJII Toshiyuki
• 金额: $ 2.66万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760594/
• 关键词: 燃料サイクル; ネプツニウム; 水和物溶融体; 硝酸カルシウム; ラマン分光分析法; 分子振動; ウラン; オキソイオン; アクチニルイオン; 濃厚電解質溶液; 蛍光分光分析; ラマン分光分析; 硝酸イオン; 吸光分光分析; テルビウム; ユーロピウム; 溶存状態

Neptunium species in calcium nitrate hydrate melts were analyzed by Raman spectrometry and UV/Vis/NIR spectrometry. Major fraction was assigned to be NpO_2^<2+> of Np(VI) and small fraction to be NpO_2^+ of Np(V). A shift of the v1 symmetric vibrational frequency of NpO_2^<2+> in nitrate media was found in Raman spectra. This suggests a coordination circumstance change of NpO_2^<2+>.

采用拉曼光谱和紫外/维斯/近红外光谱分析了水合硝酸钙熔体中镎的存在形态。大部分是Np（VI）的NpO_2^<2+>，小部分是Np（V）的NpO_2^+。在拉曼光谱中发现NpO_2^<2+>的v1对称振动频率发生了移动。这表明NpO_2^<2+>的配位环境发生了变化。

项目成果

Study on Coordination Characteristics of Neptunium Ions in Calcium Nitrate Hydrate Melt by Raman Spectrometry

拉曼光谱研究硝酸钙水合物熔体中镎离子的配位特性

• 发表时间: 2009
• 作者: Toshiyuki Fujii;Genki Okude;Akihiro Uehara;Hajimu Yamana
• 通讯作者: Hajimu Yamana

Study on Coordination Characteristics of Neptunium and Uranium Ions in Calcium Nitrate Hydrate Melt by Raman Spectrometry and UV/Vis/NIR Spectrometry

拉曼光谱和紫外/可见/近红外光谱研究硝酸钙水合物熔体中镎和铀离子的配位特性

• DOI: 10.1088/1757-899x/9/1/012061
• 发表时间: 2010
• 期刊: IOP Conf. Series : Materials Science and Engineering
• 作者: T. Fujii;G. Okude;A. Uehara;and H. Yamana
• 通讯作者: and H. Yamana