SOLVENT EXTRACTION OF INORGANIC IONS WITH TRI-N-OCTYL PHOSPHINE OXIDE

Journal Article · Thu Feb 01 04:00:00 EST 1962 · Nippon Genshiryoku Gakkaishi (Japan)

DOI:https://doi.org/10.3327/jaesj.4.117· OSTI ID:4796852

Ishimori, T; Kimura, K; Fujino, T; Murakami, H

The extraction behavior of about sixty inorganic ions was studied in the respective systems of tri-n-octyl phosphine oxide (TOPO)-HCl and -HNO/sub 3/ for a contribution to the radiochemical separation techniques. TOPO was dissolved in toluene and used as its 5% (wt/vol) solutions, and the distribution ratios for cach elements were determined. Acid dependence curves were obtained for the elements ranging from sodium to uranium, and arranged in the order of the periodic table. In general, the K/sub d/ values in HCl system are not only higher than those in HNO/sub 3/ but many curves show maximal K/sub d/ values in the acidity range from 2 to 10 M HCl while many curves show minimal values in the HNO/sub 3/ system. The K/sub d/ values or the shapes of curves were found to give strong resemblance to corresponding acid system among tri-n-butyl phosphine oxide (TBPO)-HCl and tri-nbutyl phosphate (TBP)-HCl or -HNO/sub 3/ systems. However, different behavior in TBP was observed in the extraction of yttrmunm, lanthanum, and lanthanide elements in HNO/sub 3/ system; they have high K/sub d/ values at 1 M acidity. Uranium also showed clearly different results to TBP extraction at 1 M HNO/sub 3/. It was also found that the extractability with TOPO is higher than that with TBP. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-013136
• OSTI ID: 4796852
• Journal Information: Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 4; ISSN NGEGA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
ACIDS
BUTYL PHOSPHATES
BUTYL RADICALS
CHEMISTRY
DIAGRAMS
DISTRIBUTION
HYDROCHLORIC ACID
IONS
LANTHANUM
NITRIC ACID
PHOSPHINES
PHOSPHORUS OXIDES
RADIOCHEMISTRY
RARE EARTHS
SEPARATION PROCESSES
SODIUM
SOLUBILITY
SOLUTIONS
SOLVENT EXTRACTION
TABLES
TOLUENE
URANIUM
YTTRIUM