Extraction of lanthanides with halogen substituted 4-acyl-pyrazolones

Technical Report · Fri Dec 31 23:00:00 EST 1982

OSTI ID:5563251

Huang, C H; Freiser, H

Equilibrium extraction behavior for a series of representative tervalent lanthanide ions, La, Pr, Eu, and Yb, using chloroform solutions containing halogenated derivatives of 4-acyl-1-phenyl-3-methyl-5-pyrazolone have been studied. The results demonstrate that these lanthanides are extracted as simple chelates, LnL/sub 3/. The equilibrium constants of these extraction reactions have been calculated. The relationships between the acid dissociation constants, K/sub a/, determined by a two-phase titration method, distribution constants, K/sub DR/, and the extraction equilibrium constants, K/sub ex/, are discussed. 14 refs., 5 figs., 5 tabs.

• Research Organization: Arizona Univ., Tucson (USA). Dept. of Chemistry
• DOE Contract Number: AC02-76ER04073
• OSTI ID: 5563251
• Report Number(s): DOE/ER/04073-19; ON: DE85014278
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
AROMATICS
CHELATES
COMPLEXES
DATA
ELEMENTS
EQUILIBRIUM
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
HETEROCYCLIC COMPOUNDS
INFORMATION
LANTHANUM
LIGANDS
METALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PH VALUE
PRASEODYMIUM
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
YTTERBIUM