Solvent extraction of Li+, H3O+ and NH4 + into nitrobenzene by using sodium dicarbollylcobaltate and calix[4]arene-bis(t-octylbenzo-18-crown-6)

E. Makrlík, P. Selucký, P. Vaňura, B. A. Moyer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+ (aq) + NaL+ (nb) ↔ ML+ (nb) + Na+ (aq) taking place in the two-phase water-nitrobenzene system (M+= Li +, H3O+, NH4 +; L = calix[4]arene-bis(t-octylbenzo-18-crown-6); aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Furthermore, the stability constants of the ML+ complexes in nitrobenzene saturated with water were calculated; they were found to increase in the following cation order: H3O + < Li+ < NH4 +.

Original languageEnglish
Pages (from-to)2171-2174
Number of pages4
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume295
Issue number3
DOIs
StatePublished - Mar 2013

Funding

Acknowledgments This work was supported by the Grant Agency of Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Project No.: 42900/1312/3114 ‘‘Environmental Aspects of Sustainable Development of Society’’, and by the Czech Ministry of Education, Youth, and Sports (Project MSM 6046137307).

Keywords

  • Calix[4]arene-bis(t-octylbenzo-18-crown-6)
  • Complexation
  • Extraction and stability constants
  • Univalent cations
  • Water-nitrobenzene system

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