Synergistic extraction of trivalent actinides by mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 and neutral oxo donors

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398208082108· OSTI ID:6629837

Mathur, J N; Khopkar, P K

The synergistic extraction of trivalent actinides Am, Cm, Bk, and Cf with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP) and TBP or TOPO has been investigated in xylene at 30/sup 0/C. With HPMBP alone, all four trivalent actinides form M(PMBP)/sub 3/ HPMBP-type self-adducts. Bk(III) shows an abnormally high extraction with HPMBP alone. With TBP or TPOP(S) as neutral donor, except in the Bk/HPMBP/TBP system where Bk(PMBP)/sub 3/ HPMBP TBP was extracted, all metal ions were extracted as M(PMBP)/sub 3/ S and M(PMBP)/sub 3/ (S)/sub 2/ into the organic phase. The equilibrium constants (..beta../sub 1/, ..beta../sub 2/, and K/sub 2/) for the organic phase synergistic reactions have been calculated. The ..beta../sub 1/, ..beta../sub 2/ values for Bk(III)/HPMBP/TOPO system are much lower as compared to the corresponding values for other trivalent actinides. The reasons for this extraordinary behavior of Bk(III) have been discussed. The extraction behavior of the M(III)/HPMBP/S and the M(III)/HTTA/S systems has also been compared. 10 figures, 3 tables.

• Research Organization: Bhabha Atomic Research Centre, Bombay, India
• OSTI ID: 6629837
• Journal Information: Sep. Sci. Technol.; (United States), Vol. 17:7, Issue 7
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMERICIUM
SOLVENT EXTRACTION
BERKELIUM
CALIFORNIUM
CURIUM
ADDUCTS
ALKANES
AQUEOUS SOLUTIONS
AROMATICS
BENZOYL RADICALS
CHEMICAL REACTION KINETICS
DISTRIBUTION FUNCTIONS
EQUILIBRIUM
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
KETONES
MEDIUM TEMPERATURE
MIXTURES
NITRO COMPOUNDS
ORGANIC SOLVENTS
PH VALUE
QUANTITY RATIO
RADIOASSAY
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
ACTINIDES
DATA
DISPERSIONS
ELEMENTS
EXTRACTION
FUNCTIONS
HYDROCARBONS
INFORMATION
KINETICS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RADICALS
REACTION KINETICS
SEPARATION PROCESSES
SOLUTIONS
SOLVENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
400105* - Separation Procedures