Competitive, proton-coupled, alkali metal cation transport across polymer-supported liquid membranes containing sym-(decyl)-dibenzo-16-crown-5-oxyacetic acid: Variation of the alkyl 2-nitrophenyl ether membrane solvent

Philip R. Brown, Johnny L. Hallman, Louis W. Whaley, Dhimant H. Desai, Michael J. Pugia, Richard A. Bartsch

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Alkali metal cation transport across porous polypropylene-supported liquid membranes containing a lipophilic crown ether carboxylic acid in a series of alkyl 2-nitrophenyl ethers has been studied. Both the efficiency and selectivity of cation transport are influenced by alkyl group variation in the membrane solvent. For homologous series of normal alkyl and isoalkyl 2-nitrophenyl ethers, the dielectric constant of the membrane solvent provides the best correlation with the cation transport rate. In terms of the efficiency and selectivity of cation transport, 2-nitrophenyl pentyl and hexyl ethers surpass 2-nitrophenyl octyl ether.

Original languageEnglish (US)
Pages (from-to)195-206
Number of pages12
JournalJournal of Membrane Science
Volume56
Issue number2
DOIs
StatePublished - Feb 15 1991

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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