Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid
Identifieur interne : 003433 ( Main/Curation ); précédent : 003432; suivant : 003434Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid
Auteurs : A. M. El-Kot [Égypte]Source :
- Journal of Radioanalytical and Nuclear Chemistry [ 0236-5731 ] ; 1993-04-01.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Acid concentration, Acidic, Acidic solution, Acidic solutions, Antagonistic effects, Aqueous phase, Aqueous solution, Chem, Distribution ratio, Equilibrium constants, Europium, Europium III Complexes, Extraction, Extraction ratio, Hdehp, Inorg, Lanthanide, Lanthanide ions, Liquid liquid extraction, Medium effect, Neodymium, Neodymium III Complexes, Nucl, Organic additives, Organic ligand, Organic phase, Organic phases, Peppard, Solvent concentration, Solvent effect, Solvent extraction, Synergism, Third power, Thulium, Thulium III Complexes, Topo, Trioctylphosphine oxide, Trivalent lanthanides.
- Teeft :
- Acid concentration, Acidic, Acidic solutions, Antagonistic effects, Aqueous phase, Chem, Distribution ratio, Equilibrium constants, Europium, Extraction, Extraction ratio, Hdehp, Inorg, Lanthanide, Lanthanide ions, Neodymium, Nucl, Organic additives, Organic phase, Organic phases, Peppard, Solvent concentration, Solvent extraction, Synergism, Third power, Thulium, Topo, Trioctylphosphine oxide, Trivalent lanthanides.
Abstract
Abstract: The extraction of Na3+, Eu3+ and Tm3+ by di-(2-ethylhexyl)phosphoric acid, HDEHP has been studied from various aqueous acidic solutions. The extraction of these elements is inversely proportional to the third power of the hydrogen ion concentration. Antagonistic effects were observed when the extraction was studied by mixtures of HDEHP and tributyl phosphate, TBP, or trioctylphosphine oxide, TOPO. The presence of water-miscible alcohols and acetone generally increases the extraction of these three elements from HCl solutions. Reaction mechanisms have been suggested and discussed in the light of the data obtained.
Url:
DOI: 10.1007/BF02134592
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M." last="El-Kot">A. M. El-Kot</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:44B66B26220DBB4D3F4FEFBC2F2C893D03B62E70</idno><date when="1993" year="1993">1993</date><idno type="doi">10.1007/BF02134592</idno><idno type="url">https://api.istex.fr/document/44B66B26220DBB4D3F4FEFBC2F2C893D03B62E70/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000F13</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000F13</idno><idno type="wicri:Area/Istex/Curation">000F13</idno><idno type="wicri:Area/Istex/Checkpoint">001379</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">001379</idno><idno type="wicri:doubleKey">0236-5731:1993:El Kot A:solvent:extraction:of</idno><idno type="wicri:Area/Main/Merge">003718</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid</title><author><name sortKey="El Kot, A M" sort="El Kot, A M" uniqKey="El Kot A" first="A. M." last="El-Kot">A. M. El-Kot</name><affiliation wicri:level="1"><country xml:lang="fr">Égypte</country><wicri:regionArea>Chemistry Department, Faculty of Science, Zagazig University, Zagazig</wicri:regionArea><wicri:noRegion>Zagazig</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Radioanalytical and Nuclear Chemistry</title><title level="j" type="sub">An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry</title><title level="j" type="abbrev">Journal of Radioanalytical and Nuclear Chemistry Articles</title><idno type="ISSN">0236-5731</idno><idno type="eISSN">1588-2780</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1993-04-01">1993-04-01</date><biblScope unit="volume">170</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="207">207</biblScope><biblScope unit="page" to="214">214</biblScope></imprint><idno type="ISSN">0236-5731</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0236-5731</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acid concentration</term><term>Acidic</term><term>Acidic solutions</term><term>Antagonistic effects</term><term>Aqueous phase</term><term>Chem</term><term>Distribution ratio</term><term>Equilibrium constants</term><term>Europium</term><term>Extraction</term><term>Extraction ratio</term><term>Hdehp</term><term>Inorg</term><term>Lanthanide</term><term>Lanthanide ions</term><term>Neodymium</term><term>Nucl</term><term>Organic additives</term><term>Organic phase</term><term>Organic phases</term><term>Peppard</term><term>Solvent concentration</term><term>Solvent extraction</term><term>Synergism</term><term>Third power</term><term>Thulium</term><term>Topo</term><term>Trioctylphosphine oxide</term><term>Trivalent lanthanides</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Acid concentration</term><term>Acidic</term><term>Acidic solutions</term><term>Antagonistic effects</term><term>Aqueous phase</term><term>Chem</term><term>Distribution ratio</term><term>Equilibrium constants</term><term>Europium</term><term>Extraction</term><term>Extraction ratio</term><term>Hdehp</term><term>Inorg</term><term>Lanthanide</term><term>Lanthanide ions</term><term>Neodymium</term><term>Nucl</term><term>Organic additives</term><term>Organic phase</term><term>Organic phases</term><term>Peppard</term><term>Solvent concentration</term><term>Solvent extraction</term><term>Synergism</term><term>Third power</term><term>Thulium</term><term>Topo</term><term>Trioctylphosphine oxide</term><term>Trivalent lanthanides</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The extraction of Na3+, Eu3+ and Tm3+ by di-(2-ethylhexyl)phosphoric acid, HDEHP has been studied from various aqueous acidic solutions. The extraction of these elements is inversely proportional to the third power of the hydrogen ion concentration. Antagonistic effects were observed when the extraction was studied by mixtures of HDEHP and tributyl phosphate, TBP, or trioctylphosphine oxide, TOPO. The presence of water-miscible alcohols and acetone generally increases the extraction of these three elements from HCl solutions. Reaction mechanisms have been suggested and discussed in the light of the data obtained.</div></front></TEI></ISTEX></double></record>Pour manipuler ce document sous Unix (Dilib)
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