Testing calix(4)arenes for the selective removal of aluminum from a pickling bath solution

Robert S. Gärtner*, Anke M. Berends, Geert Jan Witkamp

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

For the regeneration of an industrial pickling bath solution by a solvent extraction process different extractants were investigated for their capability to extract Al. The two main components of the pickling bath solution are phosphoric and hydrofluoric acid. This work describes the results of shake experiments with different p-tert-butyl-calix[4]arenes. Their capabilities to extract Al were compared with the results of Alamine 308 and another basic extractant, tetrabutyl-phosphonium-bromide (TBP-Br), that is [(C 4H 7) 4P] +Br -. Due to the low pH and the strong complexation of Al by fluoride ions in the pickling bath solution, no significant extraction was found for all the tested calixarenes.

Original languageEnglish (US)
Pages (from-to)159-162
Number of pages4
JournalJournal of Supramolecular Chemistry
Volume2
Issue number1-3
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

Keywords

  • Aluminum
  • Calix[4]arene
  • Calixarene
  • Reactive extraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Inorganic Chemistry
  • Organic Chemistry
  • Materials Chemistry

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