1954
DOI: 10.1021/ie50532a020
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Separation of Tantalum and Niobium by Liquid-Liquid Extraction

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Cited by 49 publications
(24 citation statements)
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“…In other manually performed experiments, the extraction behaviour of hahnium fluoride complexes from mixed nitric acid/hydrofluoric acid solutions into methyl isobutyl ketone (MIBK) was investigated. The extraction of niobium and tantalum from acidic fluoride solutions into MIBK is well known, and has been used as a very characteristic separation and purification process for these elements [6][7][8]. Tantalum extracts under a broader range of conditions than does niobium.…”
Section: Previous Chemical Studiesmentioning
confidence: 99%
“…In other manually performed experiments, the extraction behaviour of hahnium fluoride complexes from mixed nitric acid/hydrofluoric acid solutions into methyl isobutyl ketone (MIBK) was investigated. The extraction of niobium and tantalum from acidic fluoride solutions into MIBK is well known, and has been used as a very characteristic separation and purification process for these elements [6][7][8]. Tantalum extracts under a broader range of conditions than does niobium.…”
Section: Previous Chemical Studiesmentioning
confidence: 99%
“…The extraction of niobium and tantalum from acidic fluoride solutions into methyl isobutyl ketone (MIBK) is well known, and has been used as a separation and purification process for these elements [13][14][15]. Tantalum extracts under a broader range of conditions than does niobium.…”
Section: Previous Chemical Studies {Gas Phase Thermochromatography)mentioning
confidence: 99%
“…Ffir die Abtrennung der stSrenden Elemente wurde eine Extraktion mit Methylisobutylketon verwendet, wobei Niob zusammen mit Tantal aus 6 M Schwefelss und 2 M FluBs/~ure ausgeschfittelt wurde [3,4]. Die weitere Abtrennung des Niobs yore Tantal war nicht nStig, well festgestellt wurde, dab die Absorption des Tantalkomplexes wesentlieh schw~cher ist und die 57iob-bestimmung nicht stSrt, wenn das Verh/iltnis 1:1 nicht fibersehritten wird.…”
Section: Resultateunclassified