Extraction liquide‐liquide par des esters alkylphosphoriques. I. Extraction de l'yttrium par l'acide di‐(2‐éthylhexyl)phosphorique

doi:10.1002/HLCA.19720550826

Paper

Extraction liquide‐liquide par des esters alkylphosphoriques. I. Extraction de l'yttrium par l'acide di‐(2‐éthylhexyl)phosphorique

Published Nov 1, 1972 · G. Brunisholz, W. Hirsbrunner, R. Roulet

Helvetica Chimica Acta

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4

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0

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Abstract

The extraction of macro-amounts of Yttrium from solutions of nitric and perchloric acids by di-(2-ethylhexyl)phosphoric acid has been studied. The extraction of Yttrium is more effective from the perchloric medium and takes place by two mechanisms: an ion-exchange reaction Y3+/H+ at low concentrations and a solvatation reaction at high concentrations of Yttrium. The stability constant of the mononitratocomplex YNO has been estimated.

Study Snapshot

Di-(2-ethylhexyl)phosphoric acid effectively extracts Yttrium from perchloric solutions, with more effective extraction from perchloric solutions, through two mechanisms: ion-exchange at low concentrations and solvatation at high concentrations.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Extraction liquide‐liquide par des esters alkylphosphoriques. I. Extraction de l'yttrium par l'acide di‐(2‐éthylhexyl)phosphorique

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References

The extraction of U(VI) and selected M(III) cations by bis neo-octyl phosphoric acid in two different hydrocarbon diluents

Bis neo-octyl phosphoric acid effectively extracts U(VI) and selected M(III) cations from an aqueous chloride phase, with higher extraction rates in n-heptane than in benzene.

Extraction of yttrium in the system YCl3HClH2O di(2-ethylhexyl) phosphoric acid

Peppard's simple ion exchange extraction reaction is limited to low x and limited H concentrations, with unexpected variations in extraction efficiency with H+ concentration.

Lanthanum solvent extraction mechanisms using di-(2-ethylhexyl) phosphoric acid

Di-(2-ethylhexyl) phosphoric acid effectively extracts lanthanum nitrate from aqueous solutions, with three predominant extraction mechanisms involving pure lanthanum ions and partially nitrated lanthanum ions.

Separation factor for the extraction systems, YCl3-ErCl3-HCl, YCl3-HoCl3-HCl and some lanthanide chlorides-hydrochloric acid with 1 M di(2-ethylhexyl) phosphoric acid in n-heptane

Er and Ho separation from Y is difficult with D2EHPA, while Sm, Gd, Dy, and Yb removal from Y is relatively easy.

THE EXTRACTION OF NEODYMIUM AND SAMARIUM BY DI(2-ETHYLHEXYL) PHOSPHORIC ACID FROM AQUEOUS CHLORIDE, PERCHLORATE, AND NITRATE SYSTEMS.

The extraction of neodymium and samarium from aqueous chloride, perchlorate, and nitrate systems by di(2-ETHYLHEXYL) phosphoric acid is more selective than the extraction of neutral species.

Citations

Effect of Y(III) distribution between aqueous nitrate and organic D2EHPA solutions on the Y(III) precipitation stripping using oxalic acid

The extraction of yttrium(III) from nitrate media by D2EHPA leads to the formation of YAsub 3center_dot2HA, which is the only metal organic species formed during extraction, and its precipitation-stripping kinetics is influenced by the

Extraction liquide-liquide par des esters alkylphosphoriques. II. Extraction des nitrates de béryllium et des autres alcalino-terreux par le tri-n-butylphosphate†

TBP extraction of beryllium nitrates is limited by high acidities, with Ca, Be, Sr, and Mg being better extracted than Ca, Be, Sr, and Mg at lower metal concentrations.

Extraction liquide‐liquide par des esters alkylphosphoriques. III. Séparation de la paire yttrium – gadolinium par l'acide di‐(2‐éthylhexyl)phosphorique

Di-(2-ethylhexyl)phosphoric acid (H(DEHP)) effectively separates yttrium and gadolinium from solutions in HNO3, with ion-exchange reaction being more selective than solvatation reaction.