Supercritical CO₂ Extraction of Copper Ions using 8-Hydroxyquinoline Derivatives for the Environment-friendly Technology

抄録

New 8-hydroxyquinoline derivatives have been synthesized efficiently via Mannich condensation and subsequently tested for solubility and Cu(II) ion extraction in supercritical carbon dioxide (Sc-CO₂). All of newly synthesized compounds could disperse easily into Sc-CO₂ and show the moderate extraction efficiency for Cu(II) ion from solid matrix. It was concluded that these compounds could be potentially used as chelating agents for the Sc-CO₂ metal extraction.