Effect of ring-size variation within dibenzocrown ether resins upon ion-pair sorption of alkali-metal cations from aqueous and aqueous methanol solutions

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399308017499· OSTI ID:5042964

Hayashita, Takashi; White, J C; Lee, J C; Bartsch, R A ^[1]

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1. Texas Tech Univ., Lubbock, TX (United States)

A batch analysis method has been developed for evaluation of metal salt sorption by crown ether polymers. Selectivity in competitive alkali-metal chloride sorption by a series of formaldehyde condensation polymers of dibenzocrown ethers is influenced by the relationship between the crown ether cavity size and metal ion diameter, as well as the degree of hydration of the metal salt. Effective and selective sorption of KCl from the other alkali-metal chlorides was obtained with a dibenzo-18-crown-6 resin. Excellent sorption selectivity for the monovalent metal chlorides was noted for competitive ion-pair sorption of NaCl, KCl, MgCl[sub 2], and CaCl[sub 2] by this resin. This resin was examined as a stationary phase for selective column separation of KCl from alkali-metal chlorides and of KCl and NaCl from alkali-metal and alkaline-earth chloride mixtures in 80% methanol-20% water. 14 refs., 7 figs., 3 tabs.

• DOE Contract Number: FG05-88ER13832
• OSTI ID: 5042964
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 28:17-18; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ALCOHOLS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CROWN ETHERS
DATA
ETHERS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HYDRATION
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
IONS
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
METHANOL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERIZATION
POLYMERS
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
RESINS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SOLVATION
SORPTION
WATER