Dual mechanism bifunctional polymers for the complexation of lanthanides and actinides. [Phosphinic resins]

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5187459

Alexandratos, S D; Quillen, D R; McDowell, W J

Phosphinic acid ion exchange/redox resins are synthesized by the reaction between polystyrene beads and phosphorus trichloride followed by base hydrolysis. The reaction requires a temperature of 73/sup 0/C for full functionalization to occur. The effect of lower functionalization temperatures on resin acid capacity was determined and the concomitant effect on ion exchange investigated. The acid capacity was found to vary from 1.09 mequiv/g to 4.79 mequiv/g in the functionalization temperature range studied (15/sup 0/C to 73/sup 0/C). The percent resin sites loaded with zinc ions is independent of the actual capacity but the time to attain that percent loading increases from 5 minutes to 60 minutes as the absolute amount of zinc loaded increases. The extracting ability of the phosphinic acid resin for europium, thorium, uranium, americium, and plutonium was examined as a function of acid concentration from acid nitrate solutions both at varying and constant ionic strength. The phosphinic resins show better extraction for these ions than the sulfonic resins, especially from high acid solution (4M HNO/sub 3/) due to the superior coordination ability of the phosphoryl oxygen. They also show a much higher selectivity for the ions tested over sodium. For example, under conditions where sulfonic resins absorb 53% of the plutonium in solution, the phosphinic acid resins absorb 99%.

• Research Organization: Tennessee Univ., Knoxville (USA). Dept. of Chemistry; Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AS05-83ER13113; AC05-84OR21400
• OSTI ID: 5187459
• Report Number(s): CONF-851011-1; ON: DE86000094
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
AMERICIUM
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
DATA
ELEMENTS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ION EXCHANGE
ION EXCHANGE MATERIALS
MATERIALS
MEDIUM TEMPERATURE
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHINIC ACIDS
PHOSPHORUS CHLORIDES
PHOSPHORUS COMPOUNDS
POLYMERS
POLYOLEFINS
POLYSTYRENE-DVB
RARE EARTHS
RESINS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SYNTHESIS
THORIUM
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
URANIUM