Tetrafluorobromates for urban mining of noble metals: A case study on iridium metal

Sergey Ivlev, Patrick Woidy, Florian Kraus, Ivan Gerin, Roman Ostvald

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Iridium is used as a hardening agent in several alloys and as a new-generation catalyst. Therefore, its recycling is a high-priority challenge. The reactions of various tetrafluorobromates MBrF4 (M = K, Rb, Cs) and M′(BrF4)2 (M′ = Ba) with Ir metal were investigated in order to transform the latter to an easily soluble form to facilitate the further recovery of the noble metal. The compositions of the obtained products were determined, corresponding reaction schemes are suggested, and proper conditions for the reactions were established. The reactions of iridium metal with alkali and alkaline earth metals was studied by using X-ray powder diffraction and thermal analyses. The investigations show that the respective hexafluoridoiridates(IV) are obtained.

Original languageEnglish
Pages (from-to)4984-4987
Number of pages4
JournalEuropean Journal of Inorganic Chemistry
Issue number28
Publication statusPublished - 1 Oct 2013


  • Alkali metals
  • Alkaline earth metals
  • Iridium
  • Oxidative fluorination
  • Tetrafluorobromate
  • Thermal analysis
  • X-ray diffraction

ASJC Scopus subject areas

  • Inorganic Chemistry

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