Elucidation of Reverse-micelle Formation by Small Angle Scattering Method and Development for Controlling Third Phase Formations in Biphasic Extraction System

小角散射法阐明反胶束形成以及双相萃取系统中控制第三相形成的开发

• 批准号: 19560847
• 负责人: YAITA Tsuyoshi
• 金额: $ 3.08万
• 依托单位: Japan Atomic Energy Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560847/
• 关键词: 逆ミセル; 再処理; 溶媒抽出; 第三相制御; 中性子小核散乱; 中性子小角散乱; モノアミド; ウラン; TBP; 第3相; XAFS; DHAO; 第三相; トリウム; TODGA; 小角散乱; 構造解析; アクチノイド

The formation mechanism for the reverse micelle which is as an origin of the third phase in the extraction was elucidated by small angle neutron scattering. From analysis based on Baxter model, species of reverse micelle in the extraction system is one oligomer and increase in number of oligomer would result in a visible third phase formation. The micelle formation is strongly correlated with alkyl chain length of an extractant and thus, this length is considered to be an important factor to suppress the third phase formation. Furthermore, the curves of the third phase formation in the U(IV) extraction systems suggested that the critical micelle concentration of an extraction system decreased drastically.

利用小角中子散射技术对萃取过程中第三相的来源--反胶束的形成机理进行了解释。从基于巴克斯特模型的分析，在萃取系统中的反胶束的物种是一个低聚物和低聚物的数目的增加将导致一个可见的第三相的形成。胶束的形成与萃取剂的烷基链长度密切相关，因此，该长度被认为是抑制第三相形成的重要因素。此外，在U（IV）萃取体系中的第三相形成曲线表明，萃取体系的临界胶束浓度急剧下降。

项目成果

SANS and EXAFS Investigation of Alkyl Chain Length and Branching Effects of N,N-dialkylamides on Aggregation Property

N,N-二烷基酰胺的烷基链长度和支化对聚集性能的影响的 SANS 和 EXAFS 研究

• 发表时间: 2009
• 作者: M.P. Jensen;T. Yaita;R. Chiarizia;S.Suzuki
• 通讯作者: S.Suzuki

Extraction aggregation as a mechanism of metal ion selectivity

萃取聚集作为金属离子选择性的机制

• 发表时间: 2008
• 期刊: Proceedings of the International Solvent Extraction Conference (ISEC) 2008 vol.1
• 作者: M.P. Jensen;T. Yaita;R. Chiarizia;T.Yaita;M. P. Jensen
• 通讯作者: M. P. Jensen

Extractant Aggregation as a Mechanism of Metal Ion Selectivity

萃取剂聚集作为金属离子选择性的机制

• 发表时间: 2009
• 期刊: Proceedings of ISEC
• 作者: M.P. Jensen;T. Yaita;R. Chiarizia
• 通讯作者: R. Chiarizia

Reverse-micelle Formation in the Partitioning of Metal Cations by Biphasic Systems Containing a Tetraalkyldiglycol-amide

含有四烷基二甘醇酰胺的双相体系分配金属阳离子时的反胶束形成

• 发表时间: 2007
• 期刊: Langmuir 23(9)
• 作者: M.P. Jensen;T. Yaita;R. Chiarizia
• 通讯作者: R. Chiarizia

SANS and EXAFS Investigation of Alkyl Chain Length and Branching Effects of N, N-dialkylamides on Aggregation Property

N,N-二烷基酰胺的烷基链长度和支化对聚集性能的 SANS 和 EXAFS 研究

• 发表时间: 2009
• 作者: S. Suzuki;T. Yaita;Y. Okamoto;H. Shiwaku;R. Motokawa;S. Koizumi
• 通讯作者: S. Koizumi