1985
DOI: 10.1080/07366298508918531
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Extraction of Some Lanthanides and Actinides by 15-Crown-5 Thenoyltrifluoroacetone Mixture in Chloroform

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Cited by 46 publications
(20 citation statements)
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“…Uranyl can easily form complexes with various types of ligands. Several studies have been carried out to enhance the selectivity in the separation of lanthanides and actinides elements in the extraction systems based on the size-fitting effect of the crown ethers [1][2][3].…”
Section: Introductionmentioning
confidence: 99%
“…Uranyl can easily form complexes with various types of ligands. Several studies have been carried out to enhance the selectivity in the separation of lanthanides and actinides elements in the extraction systems based on the size-fitting effect of the crown ethers [1][2][3].…”
Section: Introductionmentioning
confidence: 99%
“…Most recently, remarkable increases of an extractability and selectivity were achieved by Kitatsuji and coworkers [4] in the synergistic ion-pair extraction of lanthanides with 18-crown-6 or dicyclohexano-18-crown-6 in the presence of thenoyltrifluoroacetone (ΗΤΤΑ). Significant enhancement in the extraction of trivalent lanthanides with ΗΤΤΑ in the presence of 15-crown-5 was reported by Aly et al [5]. Compared with studies on the synergistic solvent extraction of trivalent lanthanides involving ΗΤΤΑ and crown ethers, the systematic study of the synergistic extraction systems involving crown ethers as synergists in the presence of 4-acyl pyrazolone is sparse [6,7], Among 4-acyl pyrazolones, l-phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 (HPMTFP) exhibits an * Author for correspondence.…”
Section: Introductionmentioning
confidence: 54%
“…The extraction equilibria of Nd(III), Eu(III) and Tm(III) with HPMTFP in the presence of a crown ether (CE) can be written as Ln^ + 3HPMTFPOTg + nCEorg = • nCEOIg + 3H^ Ln(PMTFP)3 (5) where η = the number of crown ether molecules attached to the chelate system and is equal to 0 or 1. Then D can be written as chloroform as diluent as was confirmed experimentally.…”
Section: Extraction Of Trivalent Lanthanides With a Mixture Of Hpmtfpmentioning
confidence: 99%
“…There are several reports in which crown ethers have been used for the transport of metal ions by ion-pair extraction using ␤-diketones along with crown ethers in the chloroform layer (10)(11)(12). In the presence of crown ethers alone in the membrane phase, the transport of the metal ions is negligible, but the presence of ␤-diketones results in the synergistic extraction of these metal ions into the organic phase.…”
Section: Introductionmentioning
confidence: 99%