Extraction and separation of thorium(IV) from lanthanides(III) with room-temperature ionic liquids containing primary amine N{sub 1923}

Conference · Tue Jul 01 00:00:00 EDT 2008

OSTI ID:21230398

Zuo, Y ^[1]; Chen, J; Bai, Y; Li, D Q ^[1]

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1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China)

The extraction behavior of Th(IV) by primary amine N{sub 1923} in imidazolium-based ionic liquid namely 1-octyl-3-methylimidazolium hexafluorophosphate (N{sub 1923}/IL) was studied in this paper. Results showed that N{sub 1923}/IL had poorer extraction ability for Th(IV) than N{sub 1923} in n-heptane (N{sub 1923}/HEP). The separation coefficients between Th(IV) and lanthanides(III) ({beta}{sub Th/Ln}) were obtained and compared with those in the N{sub 1923}/HEP system. On this basis, we made a preliminary assessment for the possibility of using ionic liquids as solvents for the separation of Th(IV) from lanthanides(III) sulfate in a clean process. (authors)

• Research Organization: Chemical Sciences Division, Oak Ridge National Laboratory (United States)
• OSTI ID: 21230398
• Resource Relation: Conference: ISEC 2008: International Solvent Extraction Conference on Solvent Extraction: Fundamentals to Industrial Applications, Tucson, AZ (United States), 15-19 Sep 2008; Other Information: Country of input: France; 10 refs; Related Information: In: Proceedings of ISEC 2008, International Solvent Extraction Conference - Solvent Extraction: Fundamentals to Industrial Applications, by Moyer, Bruce A. (ed.), 1740 pages.
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
07 ISOTOPES AND RADIATION SOURCES
AMINES
HEPTANE
RARE EARTH COMPOUNDS
RARE EARTHS
SOLVENT EXTRACTION
SOLVENTS
SULFATES
TEMPERATURE RANGE 0273-0400 K
THORIUM