Solvent extraction of alkali metal cations from aqueous solutions by crown ether carboxylic acids

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398208060263· OSTI ID:5314288

Strzelbicki, J; Heo, G S; Bartsch, R A

Competitive solvent extractions of alkali metal cations from aqueous solutions by the crown ether carboxylic acids sym-dibenzo-13-crown-4-oxyacetic acid, 2; sym-dibenzo-19-crown-6-oxyacetic acid, 3, and sym-dibenzo-14-crown-4-oxyacetic acid, 4, in chloroform have been conducted. Influences of aqueous phase pH and metal ion concentrations upon the concentrations of metals and complexing agent in the organic phase are assessed and compared with those reported for sym-dibenzo-16-crown-5-oxyacetic acid, 1. Extraction selectivity orders of K > Rb > Na approx. = Cs > Li, K > Rb greater than or equal to Na approx. = Cs > Li, and K > Na > Rb > Cs approx. = Li were found for extractions using 2, 3, and 4, respectively. In terms of selectivity and metal extractability, 3 surpasses 1,2, and 4.

• Research Organization: Texas Tech Univ., Lubbock
• OSTI ID: 5314288
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 17:4; ISSN SSTED
• Country of Publication: United States
• Language: English

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ALCOHOLS
ALKALI METALS
CARBOXYLIC ACIDS
CATIONS
CHARGED PARTICLES
DATA
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
IONS
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PH VALUE
POLYETHYLENE GLYCOLS
POLYMERS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES