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Extraction behavior of lanthanides using a diglycolamide derivative TODGA in ionic liquids
Abstract
Liquid-liquid extraction of lanthanides from aqueous solutions into ionic liquids (ILs) has been investigated using N,N,N',N'-tetra(n-octyl)diglycolamide (TODGA) as an extractant, and compared with that in the isooctane system. Application of ILs as the extracting phase provided unprecedented enhancement of the extraction performance of TODGA for lanthanides compared with that of the isooctane system. Slope analysis confirmed that TODGA in ILs formed a 1:3 complex with La3+, Eu3+, or Lu3+. On the other hand, the molar ratios of species extracted into isooctane were 1:3 for La3+ or 1:4 for Eu3+ and Lu3+, depending on the atomic number of the lanthanide. The transfer of lanthanides with TODGA into ILs proceeded via a cation-exchange mechanism, in contrast to ion pair extraction in the isooctane system. Furthermore, we clarified that TODGA provided selectivity for the middle lanthanides in the ILs systems, but heavier lanthanides in the isooctane system.
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Cites
Influence of chloride, water, and organic solvents on the physical properties of ionic liquids
Seddon, K. R., Stark, A., & Torres, M.-J. (2000) · Pure and Applied Chemistry · doi:10.1351/pac200072122275 · Cited by 2,293
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Ionic Liquids-Based Extraction: A Promising Strategy for the Advanced Nuclear Fuel Cycle
Sun, X., Luo, H., & Dai, S. (2012) · Chemical Reviews · doi:10.1021/cr200193x · Cited by 852
Separation and recovery of critical metal ions using ionic liquids
Makanyire, T., Sanchez-Segado, S., & Jha, A. (2016) · Advances in Manufacturing · doi:10.1007/s40436-015-0132-3 · Cited by 103
Kim, D., Powell, L., Delmau, L. H., Peterson, E. S., Herchenroeder, J., & Bhave, R. R. (2016) · Separation Science and Technology · doi:10.1080/01496395.2016.1171782 · Cited by 54
Metadata
- Authors
- Shimojo, K., Kurahashi, K., & Naganawa, H.
- Venue
- Dalton Transactions
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2008
- Issue
- 37
- Pages
- 5083
- ISSN
- 1477-9226 (ISSN-L)
- 1477-9234
- OpenAlex
- W2041162597
- Cited by
- 200
- References
- 1
- FWCI
- 4.80
- Type
- journal article
- Language
- en
- Open access
- closed
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- Shimojo, K., Kurahashi, K., & Naganawa, H. (2008). Extraction behavior of lanthanides using a diglycolamide derivative TODGA in ionic liquids. Dalton Transactions. https://doi.org/10.1039/b810277p
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