Synergic solvent extraction of lanthanides with mixtures of aliphatic fluorinated β-diketones and organophosphorus donors
Identifieur interne : 000923 ( Istex/Curation ); précédent : 000922; suivant : 000924Synergic solvent extraction of lanthanides with mixtures of aliphatic fluorinated β-diketones and organophosphorus donors
Auteurs : James W. Mitchel [États-Unis] ; Charles V. Banks [États-Unis]Source :
- Talanta [ 0039-9140 ] ; 1972.
English descriptors
- KwdEn :
- Adduct, Aliphatiques fluor6es, Appropriate amounts, Aqueous phase, Aqueous phases, Atomic number, Cation, Chelate, Chem, Chloride ions, Cyclohexane, Distribution curves, Distribution ratio, Distriition ratio, Extraction, Extraction constants, Extraction curves, Extraction process, Hfod, Hfod ligand, Hhfa, Htfa, Ibid, Lanthanide, Ligand, Macro quantities, Mass action effect, Maximum number, Mole ratios, Neutral donor, Neutral donors, Organic phase, Organic phases, Overall reaction, Overall stability, Phase organique, Present study, Previous studies, Quantitative extraction, Rare earth, Rare earths, Reagent, Small amounts, Solvent extraction, Synergic, Synergic effect, Synergic extraction, Synergic system, Synergic systems, Tfep, Tracer quantities.
- Teeft :
- Adduct, Aliphatiques fluor6es, Appropriate amounts, Aqueous phase, Aqueous phases, Atomic number, Cation, Chelate, Chem, Chloride ions, Cyclohexane, Distribution curves, Distribution ratio, Distriition ratio, Extraction, Extraction constants, Extraction curves, Extraction process, Hfod, Hfod ligand, Hhfa, Htfa, Ibid, Lanthanide, Ligand, Macro quantities, Mass action effect, Maximum number, Mole ratios, Neutral donor, Neutral donors, Organic phase, Organic phases, Overall reaction, Overall stability, Phase organique, Present study, Previous studies, Quantitative extraction, Rare earth, Rare earths, Reagent, Small amounts, Solvent extraction, Synergic, Synergic effect, Synergic extraction, Synergic system, Synergic systems, Tfep, Tracer quantities.
Abstract
Abstract: The extraction of lanthanides from an aqueous acetatechloride medium into cyclohexane solutions of trifluoroacetylacetone, hexafluoroacetylacctone, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione and tri-n-butyl phosphate was studied. The extraction properties of other fluorinated aliphatic β-diketones and fluoroorganophosphates were also investigated. The efficiency of the extraction of the lanthanides, the composition of the complexes transferred to the organic phase and the extraction and stability constants for the synergic reactions were determined. Synergic extraction, as a technique for the preparation of lanthanide species, was evaluated for compatibility with subsequent gas chromatography. The lanthanides were found to be rapidly and quantitatively transferred into organic phases containing mixtures of fluorinated aliphatic β-diketones and TBP. The resulting mixed complexes that contained fully fluorinated β-diketones had a distinct stoichiometry and were thermodynamically more stable dan similar mixed complexes of partially fluorinated β-diketones. These properties of the synergic systems allow precise control of the formation of anhydrous complexes in the organic phase and are compatible with the use of these systems for gas chromatography.
Url:
DOI: 10.1016/0039-9140(72)80056-0
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Banks</name><affiliation wicri:level="1"><mods:affiliation>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:29C3A0341A8F4BAD5DC149D0A7BC19DB1D893AC1</idno><date when="1972" year="1972">1972</date><idno type="doi">10.1016/0039-9140(72)80056-0</idno><idno type="url">https://api.istex.fr/document/29C3A0341A8F4BAD5DC149D0A7BC19DB1D893AC1/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000923</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000923</idno><idno type="wicri:Area/Istex/Curation">000923</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Synergic solvent extraction of lanthanides with mixtures of aliphatic fluorinated β-diketones and organophosphorus donors</title><author><name sortKey="Mitchel, James W" sort="Mitchel, James W" uniqKey="Mitchel J" first="James W." last="Mitchel">James W. Mitchel</name><affiliation wicri:level="1"><mods:affiliation>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010</wicri:regionArea></affiliation></author><author><name sortKey="Banks, Charles V" sort="Banks, Charles V" uniqKey="Banks C" first="Charles V." last="Banks">Charles V. Banks</name><affiliation wicri:level="1"><mods:affiliation>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa 50010</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Talanta</title><title level="j" type="abbrev">TAL</title><idno type="ISSN">0039-9140</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1972">1972</date><biblScope unit="volume">19</biblScope><biblScope unit="issue">10</biblScope><biblScope unit="page" from="1157">1157</biblScope><biblScope unit="page" to="1169">1169</biblScope></imprint><idno type="ISSN">0039-9140</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0039-9140</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adduct</term><term>Aliphatiques fluor6es</term><term>Appropriate amounts</term><term>Aqueous phase</term><term>Aqueous phases</term><term>Atomic number</term><term>Cation</term><term>Chelate</term><term>Chem</term><term>Chloride ions</term><term>Cyclohexane</term><term>Distribution curves</term><term>Distribution ratio</term><term>Distriition ratio</term><term>Extraction</term><term>Extraction constants</term><term>Extraction curves</term><term>Extraction process</term><term>Hfod</term><term>Hfod ligand</term><term>Hhfa</term><term>Htfa</term><term>Ibid</term><term>Lanthanide</term><term>Ligand</term><term>Macro quantities</term><term>Mass action effect</term><term>Maximum number</term><term>Mole ratios</term><term>Neutral donor</term><term>Neutral donors</term><term>Organic phase</term><term>Organic phases</term><term>Overall reaction</term><term>Overall stability</term><term>Phase organique</term><term>Present study</term><term>Previous studies</term><term>Quantitative extraction</term><term>Rare earth</term><term>Rare earths</term><term>Reagent</term><term>Small amounts</term><term>Solvent extraction</term><term>Synergic</term><term>Synergic effect</term><term>Synergic extraction</term><term>Synergic system</term><term>Synergic systems</term><term>Tfep</term><term>Tracer quantities</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Adduct</term><term>Aliphatiques fluor6es</term><term>Appropriate amounts</term><term>Aqueous phase</term><term>Aqueous phases</term><term>Atomic number</term><term>Cation</term><term>Chelate</term><term>Chem</term><term>Chloride ions</term><term>Cyclohexane</term><term>Distribution curves</term><term>Distribution ratio</term><term>Distriition ratio</term><term>Extraction</term><term>Extraction constants</term><term>Extraction curves</term><term>Extraction process</term><term>Hfod</term><term>Hfod ligand</term><term>Hhfa</term><term>Htfa</term><term>Ibid</term><term>Lanthanide</term><term>Ligand</term><term>Macro quantities</term><term>Mass action effect</term><term>Maximum number</term><term>Mole ratios</term><term>Neutral donor</term><term>Neutral donors</term><term>Organic phase</term><term>Organic phases</term><term>Overall reaction</term><term>Overall stability</term><term>Phase organique</term><term>Present study</term><term>Previous studies</term><term>Quantitative extraction</term><term>Rare earth</term><term>Rare earths</term><term>Reagent</term><term>Small amounts</term><term>Solvent extraction</term><term>Synergic</term><term>Synergic effect</term><term>Synergic extraction</term><term>Synergic system</term><term>Synergic systems</term><term>Tfep</term><term>Tracer quantities</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The extraction of lanthanides from an aqueous acetatechloride medium into cyclohexane solutions of trifluoroacetylacetone, hexafluoroacetylacctone, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione and tri-n-butyl phosphate was studied. The extraction properties of other fluorinated aliphatic β-diketones and fluoroorganophosphates were also investigated. The efficiency of the extraction of the lanthanides, the composition of the complexes transferred to the organic phase and the extraction and stability constants for the synergic reactions were determined. Synergic extraction, as a technique for the preparation of lanthanide species, was evaluated for compatibility with subsequent gas chromatography. The lanthanides were found to be rapidly and quantitatively transferred into organic phases containing mixtures of fluorinated aliphatic β-diketones and TBP. The resulting mixed complexes that contained fully fluorinated β-diketones had a distinct stoichiometry and were thermodynamically more stable dan similar mixed complexes of partially fluorinated β-diketones. These properties of the synergic systems allow precise control of the formation of anhydrous complexes in the organic phase and are compatible with the use of these systems for gas chromatography.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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