Facile solvent extraction separation of Th-227 and Ac-225 based on room-temperature ionic liquids

H. M. Luo; R. A. Boll; J. R. Bell; S. Dai

doi:10.1524/ract.2012.1950

Facile solvent extraction separation of Th-227 and Ac-225 based on room-temperature ionic liquids

H. M. Luo, R. A. Boll, J. R. Bell, S. Dai

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

New separation methodologies for radioisotopes are crucial to many medical applications. In this work, the solvent extraction of Th-227 and Ac-225 based on ionic liquids (ILs) was investigated using N,N,N',N'-tetraoctyldiglycolamide (TODGA) or di(2-ethylhexyl)phosphoric acid (HDEHP) as an extractant. Four ILs, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)-imide ([C ₄mim][NTf ₂]), 1-butyl-3-methylimidazolium bis-(perfluoroethanesulfonyl)imide ([C ₄mim][BETI]), 1-butyl-2,3-trimethyleneimidazolium (trifluoromethanesulfonyl)imide ([BuI5][NTf ₂]), and 1-benzyl pyridinium bis(trifluoromethanesulfonyl) imide ([PhCH ₂Py][NTf ₂]) with different cation or anion structural features were used as diluents for the separation of Th-227 and Ac-225. Excellent extraction efficiencies and selectivities were found for Th-227/Ac-225 when HDEHP was used as an extractant in these ILs. The effects of different extractant concentrations in ILs and different aqueous phase acidities on extraction efficiencies and selectivities of Th-227/Ac-225 are also presented. The success in separation of Th-227 and Ac-225 isotopes highlights great potentials of use of ionic liquids in isotope production.

Original language	English
Pages (from-to)	771-777
Number of pages	7
Journal	Radiochimica Acta
Volume	100
Issue number	10
DOIs	https://doi.org/10.1524/ract.2012.1950
State	Published - 2012

Funding

Acknowledgment. HML and RAB were supported by the Office of Nuclear Physics, Office of Science, US Department of Energy. JRB and SD were sponsored by the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences under Contract DE-AC05-0096OR22725 with Oak Ridge National Laboratory, managed by UT-Battelle, LLC. JRB acknowledges the Oak Ridge Associated Universities (ORAU) for a postdoctoral fellowship.

Funders	Funder number
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Nuclear Physics
Oak Ridge Associated Universities
Oak Ridge National Laboratory
Chemical Sciences, Geosciences, and Biosciences Division	DE-AC05-0096OR22725
UT-Battelle

Keywords

Actinium
Ionic liquids
Solvent extraction
Thorium

Access to Document

10.1524/ract.2012.1950

Cite this

@article{b92ee81208ad432086674bcabb1b7a00,

title = "Facile solvent extraction separation of Th-227 and Ac-225 based on room-temperature ionic liquids",

abstract = "New separation methodologies for radioisotopes are crucial to many medical applications. In this work, the solvent extraction of Th-227 and Ac-225 based on ionic liquids (ILs) was investigated using N,N,N',N'-tetraoctyldiglycolamide (TODGA) or di(2-ethylhexyl)phosphoric acid (HDEHP) as an extractant. Four ILs, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)-imide ([C 4mim][NTf 2]), 1-butyl-3-methylimidazolium bis-(perfluoroethanesulfonyl)imide ([C 4mim][BETI]), 1-butyl-2,3-trimethyleneimidazolium (trifluoromethanesulfonyl)imide ([BuI5][NTf 2]), and 1-benzyl pyridinium bis(trifluoromethanesulfonyl) imide ([PhCH 2Py][NTf 2]) with different cation or anion structural features were used as diluents for the separation of Th-227 and Ac-225. Excellent extraction efficiencies and selectivities were found for Th-227/Ac-225 when HDEHP was used as an extractant in these ILs. The effects of different extractant concentrations in ILs and different aqueous phase acidities on extraction efficiencies and selectivities of Th-227/Ac-225 are also presented. The success in separation of Th-227 and Ac-225 isotopes highlights great potentials of use of ionic liquids in isotope production.",

keywords = "Actinium, Ionic liquids, Solvent extraction, Thorium",

author = "Luo, {H. M.} and Boll, {R. A.} and Bell, {J. R.} and S. Dai",

year = "2012",

doi = "10.1524/ract.2012.1950",

language = "English",

volume = "100",

pages = "771--777",

journal = "Radiochimica Acta",

issn = "0033-8230",

publisher = "De Gruyter",

number = "10",

}

TY - JOUR

T1 - Facile solvent extraction separation of Th-227 and Ac-225 based on room-temperature ionic liquids

AU - Luo, H. M.

AU - Boll, R. A.

AU - Bell, J. R.

AU - Dai, S.

PY - 2012

Y1 - 2012

N2 - New separation methodologies for radioisotopes are crucial to many medical applications. In this work, the solvent extraction of Th-227 and Ac-225 based on ionic liquids (ILs) was investigated using N,N,N',N'-tetraoctyldiglycolamide (TODGA) or di(2-ethylhexyl)phosphoric acid (HDEHP) as an extractant. Four ILs, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)-imide ([C 4mim][NTf 2]), 1-butyl-3-methylimidazolium bis-(perfluoroethanesulfonyl)imide ([C 4mim][BETI]), 1-butyl-2,3-trimethyleneimidazolium (trifluoromethanesulfonyl)imide ([BuI5][NTf 2]), and 1-benzyl pyridinium bis(trifluoromethanesulfonyl) imide ([PhCH 2Py][NTf 2]) with different cation or anion structural features were used as diluents for the separation of Th-227 and Ac-225. Excellent extraction efficiencies and selectivities were found for Th-227/Ac-225 when HDEHP was used as an extractant in these ILs. The effects of different extractant concentrations in ILs and different aqueous phase acidities on extraction efficiencies and selectivities of Th-227/Ac-225 are also presented. The success in separation of Th-227 and Ac-225 isotopes highlights great potentials of use of ionic liquids in isotope production.

AB - New separation methodologies for radioisotopes are crucial to many medical applications. In this work, the solvent extraction of Th-227 and Ac-225 based on ionic liquids (ILs) was investigated using N,N,N',N'-tetraoctyldiglycolamide (TODGA) or di(2-ethylhexyl)phosphoric acid (HDEHP) as an extractant. Four ILs, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)-imide ([C 4mim][NTf 2]), 1-butyl-3-methylimidazolium bis-(perfluoroethanesulfonyl)imide ([C 4mim][BETI]), 1-butyl-2,3-trimethyleneimidazolium (trifluoromethanesulfonyl)imide ([BuI5][NTf 2]), and 1-benzyl pyridinium bis(trifluoromethanesulfonyl) imide ([PhCH 2Py][NTf 2]) with different cation or anion structural features were used as diluents for the separation of Th-227 and Ac-225. Excellent extraction efficiencies and selectivities were found for Th-227/Ac-225 when HDEHP was used as an extractant in these ILs. The effects of different extractant concentrations in ILs and different aqueous phase acidities on extraction efficiencies and selectivities of Th-227/Ac-225 are also presented. The success in separation of Th-227 and Ac-225 isotopes highlights great potentials of use of ionic liquids in isotope production.

KW - Actinium

KW - Ionic liquids

KW - Solvent extraction

KW - Thorium

UR - http://www.scopus.com/inward/record.url?scp=84866606195&partnerID=8YFLogxK

U2 - 10.1524/ract.2012.1950

DO - 10.1524/ract.2012.1950

M3 - Article

AN - SCOPUS:84866606195

SN - 0033-8230

VL - 100

SP - 771

EP - 777

JO - Radiochimica Acta

JF - Radiochimica Acta

IS - 10

ER -

Facile solvent extraction separation of Th-227 and Ac-225 based on room-temperature ionic liquids

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this