Thermal stability of uranyl complexes with neutral oxygen-containing organic bases

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6559095

Kobets, L V

The thermal stability of uranyl chloride, nitrate, and oxalate with a series of neutral oxygen-containing organic ligands is discussed. It was found that the temperatures of removal of chlorine are higher than the stripping of the first molecule of the base in complexes UO/sub 2/Cl/sub 2/ x 2L. This is an indication of greater strength of the bonds of the Cl/sup -/ ions to the uranyl group in comparison with the investigated bases. It was shown that the temperatures of removal of a mole of neutral ligands depend little on the nature of the anions and exhibit a correlation with the donor capacity of the bases: Ac < TBP < DMFA similarly ordered DMSO < TBPO similarly ordered PyO. The chemistry of the decomposition of the complexes and the strength of the binding of the acido- and neutral ligands in them are discussed.

• OSTI ID: 6559095
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical &amp; Physicochemical Properties
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
AMIDES
BINDING ENERGY
BUTYL PHOSPHATES
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
CHEMICAL BONDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COMPLEXOMETRY
COORDINATION VALENCES
DECOMPOSITION
DIFFERENTIAL THERMAL ANALYSIS
DISSOCIATION ENERGY
DMSO
ENERGY
ESTERS
FORMAMIDE
GRAVIMETRIC ANALYSIS
HALIDES
HALOGEN COMPOUNDS
HYDRATES
LIGANDS
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXALATES
OXYGEN COMPOUNDS
PHOSPHORIC ACID ESTERS
PYROLYSIS
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
STABILITY
SULFOXIDES
TBP
TBPO
TEMPERATURE EFFECTS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
URANIUM COMPLEXES
URANIUM COMPOUNDS
URANYL CHLORIDES
URANYL COMPLEXES
URANYL COMPOUNDS
URANYL NITRATES
VALENCE