Synergism in the extraction of Cu(II) by polydentate thia ligands combined with didodecylnaphthalene sulfonic acid
Conference
·
OSTI ID:10102306
Tetradentate alkyl thia ethers strongly enhance the extraction of Cu(II) from aqueous sulfuric acid solution by the strong-acid cation exchanger didodecylnaphthalene sulfonic acid (HDDNS). Among the 12-, 14-, and 16-membered macrocyclic tetradentate thia ethers, the strongest enhancement was found with the 14-membered ring. Weak enhancement was observed for one monodentate and two bidentate alkyl thia ethers. Two acyclic tetradentate thia ethers exhibited stronger enhancement than expected from the aqueous-phase macrocyclic effect. An equilibrium scheme is proposed to rationalize the results for the tetradentate ligands. 14 refs, 5 figs.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10102306
- Report Number(s):
- CONF-930945--1; ON: DE93001207
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6223444