The application of novel hydrophobic ionic liquids to the extraction of uranium(vi) from nitric acid medium and a determination of the uranyl complexes formed

Bell T.J.; Ikeda Y.

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The application of novel hydrophobic ionic liquids to the extraction of uranium(vi) from nitric acid medium and a determination of the uranyl complexes formed

机译：新型疏水离子液体在硝酸介质中萃取铀（vi）的应用及确定形成的铀酰配合物

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Novel ammonium based hydrophobic ionic liquids (ILs) have been synthesised and characterised, and their use in the liquid-liquid extraction of uranium(vi) from an aqueous nitric acid solution using tri-n-butyl phosphate (TBP), studied. On varying the nitric acid concentration, each IL was found to give markedly different results. Relatively hydrophilic ILs showed high uranium(vi) extractability at 0.01 M nitric acid solution which progressively decreased from 0.01 to 2 M HNO_3 and then increased again as the nitric acid concentration was increased to 6 M. An analysis of the mechanisms involved for one such IL, pointed to cationic-exchange being the predominant route at low nitric acid concentrations whilst at high nitric acid concentrations, anionic-exchange predominated. Strongly hydrophobic ILs showed low extractability for nitric acid concentrations below 0.1 M but increasing extractability from 0.1 M to 6 M nitric acid. The predominant mechanism in this case involved the partitioning of a neutral uranyl complex. The uranyl complexes were found to be UO2~(2+)·(TBP)_3 for the cationic exchange mechanism, UO_2(NO_3)_2(TBP) _2 for the neutral mechanism and UO_2(NO_3) _3~-·(TBP) for the anionic exchange mechanism.

机译：合成和表征了新型的基于铵的疏水离子液体（ILs），并研究了它们在硝酸水溶液中使用磷酸三正丁酯（TBP）液-液萃取铀（vi）的用途。在改变硝酸浓度时，发现每个IL给出明显不同的结果。相对亲水的离子液体在0.01 M硝酸溶液中显示出较高的铀（vi）萃取能力，从0.01到2 M HNO_3逐渐降低，然后随着硝酸浓度增加到6 M而再次增加。对一种此类离子液体涉及的机理进行了分析，指出阳离子交换是低硝酸浓度下的主要途径，而在高硝酸浓度下，阴离子交换是主要途径。强疏水性离子液体对低于0.1 M的硝酸浓度显示出较低的可萃取性，但将可萃取性从0.1 M增加至6 M的硝酸。在这种情况下，主要机制涉及中性铀酰复合物的分配。尿烷复合物的阳离子交换机理为UO2〜（2+）·（TBP）_3，中性机理为UO_2（NO_3）_2（TBP）_2，UO_2（NO_3）_3〜-·（TBP）阴离子交换机制。

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《Dalton transactions: An international journal of inorganic chemistry》 |2011年第39期|共6页
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Bell T.J.; Ikeda Y.;
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1. The application of novel hydrophobic ionic liquids to the extraction of uranium(vi) from nitric acid medium and a determination of the uranyl complexes formed [J] . Bell T.J., Ikeda Y. Dalton transactions: An international journal of inorganic chemistry . 2011,第39期

机译：新型疏水离子液体在硝酸介质中萃取铀（vi）的应用及确定形成的铀酰配合物
2. Task-specific ionic liquids incorporating alkyl phosphate cations for extraction of U(VI) from nitric acid medium: synthesis, characterization, and extraction performance [J] . Li Hongyu, Wang Bo, Zhang Le, Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry . 2015,第1期

机译：包含烷基磷酸酯阳离子的特定任务离子液体，用于从硝酸介质中萃取U（VI）：合成，表征和萃取性能
3. Highly selective extraction of uranium from nitric acid medium with phosphine oxide functionalized pillar[5]arenes in room temperature ionic liquid (vol 192, pg 152, 2018) [J] . Chen Lixi, Wang Ying, Yuan Xiangyang, Separation and Purification Technology . 2019,第期

机译：从氧化膦官能化柱的硝酸介质的高度选择性提取硝酸介质[5]室温离子液体（Vol 192，PG 152,2018）
4. Extraction Of Uranyl Ion With 3-Phenyl-4-Acetyl 5-Isoxazolone And Neutral Donors From Dilute Nitric Acid Medium [C] . S.Banerjee, A.Bhattacharya, P.K.Mohapatra, International Symposium on Solvent Extraction(ISSE); 20020926-20030927; Bhubaneswar; IN . 2002

机译：从稀硝酸介质中用3-苯基-4-乙酰基5-异恶唑酮和中性给体萃取铀酰离子
5. I. THE ELECTROCHEMISTRY OF NITRIC OXIDE AND A NITROUS ACID AT A MERCURY ELECTRODE IN AQUEOUS SOLUTIONS. II. ELECTROCHEMISTRY AND HYDROLYSIS KINETICS OF THE 2,2'-BIPYRIDINE COMPLEXES OF IRON(III) AND IRON(II); ELECTROCHEMICAL KINETIC PARAMETERS FOR SEVERAL IRON COMPLEXES. III. PROTON NUCLEAR MAGNETIC RESONANCE STUDIES OF URANIUM(IV)-ETHYLENE DIAMINETETRAACETIC ACID COMPLEXES IN AQUEOUS (DEUTERIUM-OXIDE) SOLUTIONS. [D] . EHMAN, DEWAYNE LEE. 1969

机译：I.水溶液中汞电极上一氧化二氮和亚硝酸的电化学二。铁（III）和铁（II）的2,2'-联吡啶络合物的电化学和水解动力学；多种铁络合物的电化学动力学参数。三，铀（IV）-水溶液（氧化氘）中铀（IV）-乙撑双氨基乙酸复合物的质子核磁共振研究
6. Determination of Ferulic Acid in Angelica sinensis by Temperature-Controlled Hydrophobic Ionic Liquids-Based Ultrasound/Heating-Assisted Extraction Coupled with High Performance Liquid Chromatography [O] . Hongwei Wu, Qianqian Huang, Shujun Chao, 2020

机译：温度控制疏水离子液体基于基于液相色谱/加热辅助提取的Angelica Sinensis中的阿魏酸测定耦合高性能液相色谱法
7. Determination of Ferulic Acid in Angelica sinensis by Temperature-Controlled Hydrophobic Ionic Liquids-Based Ultrasound/Heating-Assisted Extraction Coupled with High Performance Liquid Chromatography [O] . Hongwei Wu, Qianqian Huang, Shujun Chao, 2020

机译：温度控制疏水离子液体基于基于液相色谱/加热辅助提取的Angelica Sinensis中的阿魏酸测定耦合高性能液相色谱法
8. Determination of Small Amounts of Nitric Acid in the Presence of Large Amounts of Uranium (VI) And Extraction of Nitric Acid into TBP Solutions Highly Loaded with Uranyl Nitrate [R] . Kolarik, Z., Schuler, R. 1982

机译：大量铀（VI）存在下少量硝酸的测定及硝酸铀酰负载高浓度TBp溶液中硝酸的萃取

The application of novel hydrophobic ionic liquids to the extraction of uranium(vi) from nitric acid medium and a determination of the uranyl complexes formed

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