Equilibrium studies of the extraction of zirconium(IV) from sulfuric acid solutions with Di(2‐ethylhexyl)phosphoric acid

Ruey‐Shin ‐S Juang; Ru‐Huey ‐H Lo

doi:10.1002/jctb.280580309

Equilibrium studies of the extraction of zirconium(IV) from sulfuric acid solutions with Di(2‐ethylhexyl)phosphoric acid

Ruey‐Shin ‐S Juang^*, Ru‐Huey ‐H Lo

^*Corresponding author for this work

Yuan Ze University

Research output: Contribution to journal › Journal Article › peer-review

18 Scopus citations

Abstract

Equilibrium studies were made at 25°C in the extraction of zirconium(IV) from sulfuric acid solutions with di(2‐ethylhexyl)phosphoric acid (D2EHPA, HR) dissolved in kerosene. The reaction stoichiometry was numerically determined and the compositions of the extracted species were found to be ZrR₄ and ZrR₄(HR) at low loading ratios of D2EHPA (α < 0.09), but became ZrR₄ and ZrR₄(HR)₃ at relatively higher loading ratios (0.10 < α < 0.32). The equilibrium constants for the formation of these species were also obtained. Furthermore, numerical treatment of the experimental data excluded the existence of polynuclear complexes under the conditions studied (α < 0.32).

Original language	English
Pages (from-to)	261-269
Number of pages	9
Journal	Journal of Chemical Technology and Biotechnology
Volume	58
Issue number	3
DOIs	https://doi.org/10.1002/jctb.280580309
State	Published - 1993
Externally published	Yes

Keywords

di(2‐ethylhexyl)‐phosphoric acid
equilibrium
solvent extraction
zirconium(IV)

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10.1002/jctb.280580309

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title = "Equilibrium studies of the extraction of zirconium(IV) from sulfuric acid solutions with Di(2‐ethylhexyl)phosphoric acid",

abstract = "Equilibrium studies were made at 25°C in the extraction of zirconium(IV) from sulfuric acid solutions with di(2‐ethylhexyl)phosphoric acid (D2EHPA, HR) dissolved in kerosene. The reaction stoichiometry was numerically determined and the compositions of the extracted species were found to be ZrR4 and ZrR4(HR) at low loading ratios of D2EHPA (α < 0.09), but became ZrR4 and ZrR4(HR)3 at relatively higher loading ratios (0.10 < α < 0.32). The equilibrium constants for the formation of these species were also obtained. Furthermore, numerical treatment of the experimental data excluded the existence of polynuclear complexes under the conditions studied (α < 0.32).",

keywords = "di(2‐ethylhexyl)‐phosphoric acid, equilibrium, solvent extraction, zirconium(IV)",

author = "Juang, {Ruey‐Shin ‐S} and Lo, {Ru‐Huey ‐H}",

year = "1993",

doi = "10.1002/jctb.280580309",

language = "英语",

volume = "58",

pages = "261--269",

journal = "Journal of Chemical Technology and Biotechnology",

issn = "0268-2575",

publisher = "John Wiley and Sons Ltd",

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}

TY - JOUR

T1 - Equilibrium studies of the extraction of zirconium(IV) from sulfuric acid solutions with Di(2‐ethylhexyl)phosphoric acid

AU - Juang, Ruey‐Shin ‐S

AU - Lo, Ru‐Huey ‐H

PY - 1993

Y1 - 1993

N2 - Equilibrium studies were made at 25°C in the extraction of zirconium(IV) from sulfuric acid solutions with di(2‐ethylhexyl)phosphoric acid (D2EHPA, HR) dissolved in kerosene. The reaction stoichiometry was numerically determined and the compositions of the extracted species were found to be ZrR4 and ZrR4(HR) at low loading ratios of D2EHPA (α < 0.09), but became ZrR4 and ZrR4(HR)3 at relatively higher loading ratios (0.10 < α < 0.32). The equilibrium constants for the formation of these species were also obtained. Furthermore, numerical treatment of the experimental data excluded the existence of polynuclear complexes under the conditions studied (α < 0.32).

AB - Equilibrium studies were made at 25°C in the extraction of zirconium(IV) from sulfuric acid solutions with di(2‐ethylhexyl)phosphoric acid (D2EHPA, HR) dissolved in kerosene. The reaction stoichiometry was numerically determined and the compositions of the extracted species were found to be ZrR4 and ZrR4(HR) at low loading ratios of D2EHPA (α < 0.09), but became ZrR4 and ZrR4(HR)3 at relatively higher loading ratios (0.10 < α < 0.32). The equilibrium constants for the formation of these species were also obtained. Furthermore, numerical treatment of the experimental data excluded the existence of polynuclear complexes under the conditions studied (α < 0.32).

KW - di(2‐ethylhexyl)‐phosphoric acid

KW - equilibrium

KW - solvent extraction

KW - zirconium(IV)

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U2 - 10.1002/jctb.280580309

DO - 10.1002/jctb.280580309

M3 - 文章

AN - SCOPUS:0027358737

SN - 0268-2575

VL - 58

SP - 261

EP - 269

JO - Journal of Chemical Technology and Biotechnology

JF - Journal of Chemical Technology and Biotechnology

IS - 3

ER -

Equilibrium studies of the extraction of zirconium(IV) from sulfuric acid solutions with Di(2‐ethylhexyl)phosphoric acid

Abstract

Keywords

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