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Authors: ALINA SAPONAR, ELISABETH-JEANNE POPOVICI, IOANA PERHAITA, NICOLAE POPOVICI, IOAN SILAGHI-DUMITRESCU.
The capability of p-tert-butyl calix[6]arene functionalized at the lower rim with 2-butenyl, ethyl acetate and/or N,N-diethylacetamide groups to extract Pd2+ and Eu3+ ions from aqueous medium have been investigated. Good extraction yield was obtained for calix[6]arene derivatives functionalized with tri- and hexa- ethylacetate and tri- and hexa- N,N-diethylacetamide groups. It vas revealed that the half or total substituted p-tert-butyl calix[6]arene ester derivatives present interest as liquid-liquid extraction reagents for precious metal and rare earth ions.
Keywords: Calixarene, liquid-liquid extraction, metal ions.
