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Recycling Organoiridium Waste to [(1,5-Cyclooctadiene)IrCl] 2 .

Valeriy CherepakhinTravis J Williams
Published in: Green chemistry : an international journal and green chemistry resource : GC (2024)
We report the first process for iridium element recovery from organoiridium waste that is quantitative, pyrolysis-free, and generates no iridium metal. The key step is oxidative degradation of the waste by bleach to crude iridium(IV) hydroxide. Its treatment with hydrazine and then hydrogen peroxide gives synthetically important hexachloroiridic acid, which is converted to [(1,5-cyclooctadiene)IrCl] 2 in 87% yield.
Keyphrases
  • hydrogen peroxide
  • sewage sludge
  • municipal solid waste
  • heavy metals
  • nitric oxide
  • life cycle
  • anaerobic digestion
  • high resolution
  • fluorescent probe
  • aqueous solution