Radiation effect on ionic liquid [Hbet][Tf2N] for Nd2O3 separation from simulated spent nuclear fuels

Fan, Fangli; Chen, Desheng; Huang, Qinggang; Wang, Jieru; Tan, Cunmin; Wu, Xianxin; Qin, Zhi

doi:10.1007/s10967-020-07306-2

Cited by 5 publications

(4 citation statements)

References 35 publications

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“…The authors are grateful to the financial support from Natural Science Foundation of Shandong Province (ZR2020MB015), Qingdao Science and Technology Program (No. 19…”

Section: ■ Acknowledgmentsmentioning

confidence: 99%

“…Hydrophobic ionic liquids [C 4 mim][X] (X= PF 6 − and (CF 3 SO 2 ) 2 N − ) can remain unchanged even under an approximately 600 kGy dose of gamma radiolysis ( 137 Cs). 19 Therefore, ILs have been largely employed for the extraction of actinides or for the separation of lanthanides and actinides. 20 To put forward the application of ionic liquids for the processing of spent nuclear wastes, it is necessary to have a fundamental understanding of the complexation behavior of lanthanide and actinide ions in ILs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Under alpha and beta radiation, no obvious decomposition could be detected. Hydrophobic ionic liquids [C 4 mim][X] (X= PF 6 – and (CF 3 SO 2 ) 2 N – ) can remain unchanged even under an approximately 600 kGy dose of gamma radiolysis ( 137 Cs) . Therefore, ILs have been largely employed for the extraction of actinides or for the separation of lanthanides and actinides …”

Section: Introductionmentioning

confidence: 99%

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Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Hou¹,

Tang

2021

Inorg. Chem.

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A series of ionic uranyl-containing complexes, namely [C2mim]2[UO2(ccnm)4] (1), [C4mim]2[UO2(ccnm)4] (2), [N1111]2[UO2(ccnm)4][H2O]2 (3), and [P2444]2[UO2(dcnm)2(ccnm)2] (4) [(ccnm)− = carbamoylcyanonitrosomethanide; dcnm = dicyanonitrosomethanide; (C2mim)+ = 1-ethyl-3-methylimidazolium; (C4mim)+ = 1-butyl-3-methylimidazolium; (N1111)+ = tetramethylammonium; (P2444)+ = tributyl(ethyl)phosphonium)], were isolated from in situ formed dcnm-based ionic liquids and characterized systematically. It was found that the dcnm anions transformed into ccnm anions during the reactions. These anions coordinate with the uranyl cations in chelate or terminal monodentate coordination mode, affording negative divalent complex anions which can combine with different organic cations and form ionic uranyl-containing complexes. Plenty of C–H···O, N–H···O, C–H···N, N–H···N, and H···H weak interactions are formed in the crystal structures. The transformation of cyano to amide groups contributes to the crystallinity and leads to higher melting points as well as the luminescence quenching of these compounds.

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“…The authors are grateful to the financial support from Natural Science Foundation of Shandong Province (ZR2020MB015), Qingdao Science and Technology Program (No. 19…”

Section: ■ Acknowledgmentsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Hou¹,

Tang

2021

Inorg. Chem.

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“…Because ReO 4 – and TcO 4 – have similar chemical and extraction equivalence, it has been reported that, based on this, we use ReO 4 – to replace TcO 4 – for experiments. − To efficiently remove 99 TcO 4 – /ReO 4 – , three kinds of carbamic acid extractants, N -[ N , N -2-ethyl-1-hexylamine-aminocarbonylmethyl] glycine (M2EHAG), N -[ N , N -β-phenylethylamine] glycine (PELLAG), and N -[ N , N -di(2-ethylhexyl) aminocarbonylmethyl] glycine (D2EHAG), with different branch-chain structures were studied and synthesized. At present, D2EHAG is mainly used for the recovery of Ni and Co, Mn, Sc, In, Ga, Zn, and platinum group metals, and M2EHAG and PELLAG are not applied temporarily.…”

Section: Introductionmentioning

confidence: 99%

Ultraselective Extraction Reprocessing of ⁹⁹TcO₄^–/ReO₄^– with a Promising Carbamic Acid Extractant System

Yinqiao

Qin

et al. 2023

Inorg. Chem.

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With the development of nuclear energy, the reprocessing of 99TcO4 –/ReO4 – has become a very difficult problem due to environmental issues such as high output, long life, and easy leakage. In this study, three extraction systems containing carbamic acid were introduced into the reprocessing of 99TcO4 –/ReO4 – for the first time. The results involving one of the three results show that N-[N,N-di(2-ethylhexyl) aminocarbonylmethyl] glycine (D2EHAG) has ultrahigh selectivity for removal to 99TcO4 –/ReO4 –. When the extreme concentration ratio of SO4 2– and Cl– to ReO4 – of D2EHAG is 10,000:1, the distribution coefficient of ReO4 – still reaches 12.73 and 2.67, respectively. Additionally, the most hydrophilic NO3 –, when the extreme concentration ratio of NO3 – and ReO4 – is 1000:1, still has a distribution coefficient close to 2.33, which is more than the most reported MOF adsorption materials. Moreover, the reaction kinetics, stripping rate, and reuse rate were studied. After five cycles, the removal rate is still 98.12%, with a decrease of less than 0.7%. The system containing carbamic acid is a potential extraction removal system to remove 99TcO4 –/ReO4 – from nuclear radioactive wastewater.

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Qualitative and semi-quantitative study of radiolytic products of tributyl phosphate-functionalized ionic liquids

Wang

Liu

et al. 2023

Radiation Physics and Chemistry

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Radiation effect on ionic liquid [Hbet][Tf2N] for Nd2O3 separation from simulated spent nuclear fuels

Cited by 5 publications

References 35 publications

Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Ultraselective Extraction Reprocessing of ⁹⁹TcO₄^–/ReO₄^– with a Promising Carbamic Acid Extractant System

Qualitative and semi-quantitative study of radiolytic products of tributyl phosphate-functionalized ionic liquids

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Radiation effect on ionic liquid [Hbet][Tf2N] for Nd2O3 separation from simulated spent nuclear fuels

Cited by 5 publications

References 35 publications

Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids

Ultraselective Extraction Reprocessing of 99TcO4–/ReO4– with a Promising Carbamic Acid Extractant System

Qualitative and semi-quantitative study of radiolytic products of tributyl phosphate-functionalized ionic liquids

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Product

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Ultraselective Extraction Reprocessing of ⁹⁹TcO₄^–/ReO₄^– with a Promising Carbamic Acid Extractant System