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Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid

Identifieur interne : 003433 ( Main/Exploration ); précédent : 003432; suivant : 003434

Solvent 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.

RBID : ISTEX:44B66B26220DBB4D3F4FEFBC2F2C893D03B62E70

Descripteurs français

Pascal (Inist)
- Coordinat organique, Effet milieu, Effet solvant, Europium III Complexe, Extraction liquide liquide, Néodyme III Complexe, Phosphate(di[2-éthylhexyl]), Solution acide, Solution aqueuse, Thulium III Complexe.

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:

https://api.istex.fr/document/44B66B26220DBB4D3F4FEFBC2F2C893D03B62E70/fulltext/pdf

DOI: 10.1007/BF02134592

Affiliations:

Égypte

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Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid

Solvent extraction of neodymium, europium and thulium by di-(2-ethylhexyl)phosphoric acid

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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