LIQUID-GEL EXTRACTION OF U-ACYLPYRAZOL-5-ONATO COPPER COMPLEXES
- 1 December 1987
- journal article
- research article
- Published by Taylor & Francis in Solvent Extraction and Ion Exchange
- Vol. 5 (6) , 1017-1030
- https://doi.org/10.1080/07366298708918607
Abstract
Extracting hydrophobic gels have been prepared by swelling cross-linked polybutadiene with solutions of 4-acylpyrazol-5-ones (HL) in toluene, chloroform and carbon tetrachloride. The extraction of copper from perchlorate medium has been studied. Distribution curves close to those obtained in the pure liquid-liquid extraction show that the polymer has no effect on the thermodynamics of the liquid-gel extraction. The diffusion of the copper chelates CuL2into the gels appears as a controlling rate factor of the extractions which depends on the polybutadiene cross-linkage.Keywords
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