Glennon, J. D.,Harris, S. J.,Walker, A.,McSweeney, C. C.,O'Connell, M.;

1999

Gold Bulletin

Carrying gold in supercritical CO2. Gold Bulletin

Validated

()

32

2

52

58

A series of fluorinated calixarene derivatives, with lower rim sulfur-donor atoms, were synthesized and studied for the sequestration of gold using supercritical fluid extraction. Following temperature and pressure optimization and using extracts collected in methyl iso-butyl ketone, analysis by flame atomic absorption spectrometry reveals that Au(III) can be efficiently complexed and extracted by a novel calix[4]arene thiourea reagent in supercritical CO2.

0017-1557

://000171723800005