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Hydrolytic and radiolytic degradation of OphiD(iB)CMPO: Continuing studies. [TRUEX process solvent]

Conference ·
OSTI ID:5637441
; ; ; ;
The hydrolytic and radiolytic degradation of octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in tetrachloroethylene (TCE) and tributylphosphate-TCE mixtures (TRUEX process solvent) has been investigated. Decomposition products of CMPO have been identified and quantified by gas chromatography and GC-mass spectrometry. CMPO is more severely hydrolyzed in TRUEX process solvent than in TCE, but radiation damage appears to be slightly more severe in TCE than in TRUEX-TCE. Hydrolysis and radiolysis of CMPO produce the same degradation products in different relative yields. Acidic organo-phosphorus degradation products, which interfere with the stripping of americium, are favored to a greater degree in hydrolysis and increase with (HNO/sub 3/). Treatment with Na/sub 2/CO/sub 3/ solution removes these acidic impurities. In radiolyzed samples destruction of CMPO is independent of (HNO/sub 3/). Extraction of Am in radiolyzed solutions decreases little despite 40% loss of extractant. Neither hydrolysis nor radiolysis appears to significantly compromise the performance of TRUEX-TCE process solvent. 4 refs., 8 figs., 4 tabs.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5637441
Report Number(s):
CONF-871038-8; ON: DE88002969
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400105 -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
400600* -- Radiation Chemistry
ACTINIDES
AMERICIUM
BUTYL PHOSPHATES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
DECOMPOSITION
DISPERSIONS
ELEMENTS
ESTERS
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROLYSIS
INORGANIC ACIDS
LYSIS
METALS
MIXTURES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PHOSPHINE OXIDES
PHOSPHINES
PHOSPHORIC ACID
PHOSPHORIC ACID ESTERS
PHOSPHORUS COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
SOLVOLYSIS
TBP
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
YIELDS