Extraction of trivalent lanthanides by a mixture of didodecylnaphthalenesulfonic acid and a crown ether

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00121a047· OSTI ID:5569589

Ensor, D D; McDonald, G R; Pippin, C G

Didodecylnaphthalenesulfonic acid, HDDNS, has been shown to be a useful liquid-liquid cation exchanger for lanthanide elements. Its strong acid character makes the compound an effective extractant even at low pH, but it shows little ability to separate individual trivalent lanthanide ions from each other. In an effort to introduce more selectivity into the extraction of lanthanide ions by HDDNS, a study of the effect of the addition of a crown ether, 4-tert-butylcyclohexyl-15-crown-5 (15-C-5), to the organic phase was made. The results of the extraction of Ce(III), Pm(III), Eu(III), and Tm(III) by HDDNS/toluene and HDDNS/15-C-5/toluene mixtures are reported. The addition of the 15-C-5 produced measurable synergistic effects of the extraction of the light lanthanides, while the Tm(III) was relatively unaffected.

• Research Organization: Tennessee Technological Univ., Cookeville
• DOE Contract Number: AS05-79ER10489
• OSTI ID: 5569589
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:8; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALKALI METALS
CATIONS
CESIUM
CHARGED PARTICLES
DATA
ELEMENTS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
ION EXCHANGE
IONS
MEDIUM TEMPERATURE
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PH VALUE
POLYETHYLENE GLYCOLS
POLYMERS
PROMETHIUM
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SULFONIC ACIDS
THULIUM