3RD PHASE-FORMATION IN NITRIC-ACID EXTRACTION BY YL(PHENYL)-N,N-DIISOBUTYLCARBAMOYL-METHYLPHOSPHINE OXIDE

Authors
NAGASAKI S WISNUBROTO DS ENOKIDA Y SUZUKI A
Citation
S. Nagasaki et al., 3RD PHASE-FORMATION IN NITRIC-ACID EXTRACTION BY YL(PHENYL)-N,N-DIISOBUTYLCARBAMOYL-METHYLPHOSPHINE OXIDE, Solvent extraction and ion exchange, 12(2), 1994, pp. 459-473
Citations number
21
Categorie Soggetti
Chemistry
Journal title
Solvent extraction and ion exchange → ACNP
ISSN journal
07366299
Volume
12
Issue
2
Year of publication
1994
Pages
459 - 473
Database
ISI
SICI code
0736-6299(1994)12:2<459:3PINEB>2.0.ZU;2-4
Abstract
The third phase formation was studied as a function of tyl(phenyl)-N,N -diisobutylcarbamoylmethylphosphine oxide (CMPO) and tri-n-butyl phosp hate (TBP) concentrations and temperature in the extraction of nitric acid. The concentration fractions of CMPO and TBP in the second and th e third phases were determined by gas chromatography. Both CMPO and TB P were found to be enriched in the third phase. The concentrations of nitric acid in the second and the third phases relatively agreed with the calculated concentrations based on the extraction equilibrium cons tants of nitric acid by CMPO and TBP. The extraction of Np with the th ird phase formation was also discussed.