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Amine Mixture Separation Assisted by Macrocyclic Ligands

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Abstract

Liquid-liquid extraction and liquid membrane transport were used to separate mixtures of aliphatic and aromatic amines. Experiments showed that it is possible to discriminate between the aliphatic and aromatic amines of a given mixture. Selectivity is a result of a well-chosen aqueous pH in the biphasic system, or a suitable pH gradient in the membrane system. Results suggest that the macrocyclic ligand (18C6, DB18C6, or DCH18C6) associates with the substrate at the source phase-membrane interface, forming an aggregate of relatively low stability, that has a positive effect when transporting aniline, dibutylamine, and cyclohexylamine. Liquid-liquid extraction is very little affected by the presence of these classical compounds.

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Authors and Affiliations

  1. Department of Analytical Chemistry, University ’“Politehnica” Bucharest, 1–5 Polizu Street, Bucharest, Romania

    Elena Ruse, Ana Maria Josceanu, Eleonora Cerbu & Constantin Luca

Authors
  1. Elena Ruse
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  2. Ana Maria Josceanu
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  3. Eleonora Cerbu
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  4. Constantin Luca
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Ruse, E., Josceanu, A.M., Cerbu, E. et al. Amine Mixture Separation Assisted by Macrocyclic Ligands. Journal of Inclusion Phenomena 35, 409–418 (1999). https://doi.org/10.1023/A:1008140225091

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  • DOI: https://doi.org/10.1023/A:1008140225091

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