Solvent Extraction of Inorganic Nitrates with Diphosphonate Ester. I. Zirconium, Yttrium and Lanthanide Nitrates

Saisho, Hideo

doi:10.1246/bcsj.34.859

Cited by 14 publications

(3 citation statements)

References 6 publications

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“…Tetrabutyl ethylene diphosphonate also extracts zirconium, yttrium and lanthanides (337) and uranium and thorium (338) from nitric acid. In the case of uranium a monosolvate was found to form, which may indicate polymerization.…”

Section: Neutral Phosphorus Compounds: Other Reagentsmentioning

confidence: 99%

Solvent Extraction of Inorganic Species.

Marcus¹

1963

Chem. Rev.

110

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Section: Neutral Phosphorus Compounds: Other Reagentsmentioning

confidence: 99%

Solvent Extraction of Inorganic Species.

Marcus¹

1963

Chem. Rev.

110

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“…Since DBBP call also compete with T B P in availability and initial cost, it possesses great potential in the large-scale separation of these metals. Some measurements have also been reported for the extraction of thorium and lanthanides with diphosphonates, these compounds being 0-diketones (8). Radioisotopes of the rare-earth elements were used as tracers to obtain accurate values for the distributioil coefficients achieved.…”

Section: Introductionmentioning

confidence: 99%

The Extraction of Thorium and Some Lower Lanthanide Nitrates by Dibutyl Butyl Phosphonate

Manning¹

1962

Can. J. Chem.

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The distribution of thori~un and a nunlber of lanthanides between nitric acid and solutions of dibutyl butyl phosphonate in odorless kerosene has been examined as a function of the aqueous nitric acid conce~ltration. Experiments \Irere conducted a t trace metal concentration using radioisotopes. Separation factors (denoted by S a n d defined as the ratio of the distribution coefficients, K , for two metal species) have been measured for some lanthanide-lantha~lide couples and also for some thori~1111-lanthanidc couples. Results indicate that separation factors bcttveen successive lanthanides (gixen by S = Kz+l/Kz) a t the lower end of the rareearth series are superior to those obtained with either tributyl phosphate (TBI') (D. Scargill et al.

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“…32 Similar behavior was found for extraction of other metals by esters from concentrated mineral acid solutions. [33][34][35] It should be noted that we used a racemic mixture of menthol isomers, while only (−)-menthyl laurate is produced. 36 The mechanism of In extraction under these conditions is beyond the scope of this work.…”

Section: Resultsmentioning

confidence: 99%