Gold(III) extraction equilibrium in the system Cyanex 923-HClAu(III)

Martínez, Susana; Sastre, Ana Marı́a; Miralles, N.; Alguacil, Francisco José

doi:10.1016/0304-386x(94)00084-g

Cited by 44 publications

(21 citation statements)

References 7 publications

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“…This is in contrast to that reported for TOPO [19] and other Cyanex extractants [20][21][22][23] which are capable of almost quantitative extraction of gold(III) into organic solvents. For ligand 1, the variation of log D vs. log [L] was examined in order to determine the number of ligands coordinated to the extractable gold species.…”

Section: Resultscontrasting

confidence: 94%

Perfluorinated oxygen- and sulfur-containing compounds as extractants for gold(III)

Baker

Schulzke

2011

Gold Bull

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A series of highly fluorinated compounds of the type {CF 3 (CF 2 ) 5 CH 2 CH 2 } 3 P=O, [{CF 3 (CF 2 ) 5 CH 2 CH 2 } 2 P(E) C H 2 C H 2 P ( E ) { C H 2 C H 2 ( C F 2 ) 5 C F 3 } ] a n d {CF 3 (CF 2 ) 5 CH 2 CH 2 } 2 C=E (E = O or S) have been examined for their ability to extract gold(III) from aqueous solutions. The phosphine oxides have been studied under liquid-liquid extraction conditions from water into perfluorohexane and found to give poor distribution ratios. The bidentate phosphine oxide, ketone and thioketone were studied under solidliquid extraction conditions and were substantially better with extraction of up to 80% of Au(III). In addition, the crystal structure of {CF 3 (CF 2 ) 5 CH 2 CH 2 } 3 P=O has been determined.

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Section: Resultscontrasting

confidence: 94%

Perfluorinated oxygen- and sulfur-containing compounds as extractants for gold(III)

Baker

Schulzke

2011

Gold Bull

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“…The decrease in the extraction of Ce(IV) at higher acid concentration seems to be due to competition between Ce(IV) and HNO 3 to extractant, which is similar to the extraction of Au(III) and U(IV) [11,12]. Th(IV) shows a slight increase in the extraction percent with increasing acidity but the maximum of distribution ratio is less than one.…”

Section: Effect Of Aqueous Aciditymentioning

confidence: 95%

Extraction and separation of cerium(IV) from nitric acid solutions containing thorium(IV) and rare earths(III) by DEHEHP

Zhao

Zuo

et al. 2004

Journal of Alloys and Compounds

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“…A number of other metals extracted by this solvent includes gold [19,20], 3d transition metals [21], zirconium and hafnium [22], iron (III) [23], cadmium [24]. A few data are available on the extraction of chromium (VI) along with iron extraction by cyanex 923, in the work done by Saji et al [23], but no systematic work has been reported till date.…”

Section: Introductionmentioning

confidence: 96%