NITRATO NITROSYLRUTHENIUM COMPLEXES AND THEIR EXTRACTION FROM NITRIC ACID SYSTEMS BY TRIBUTYL PHOSPHATE. PART I. LABORATORY STUDIES

Technical Report · Wed May 15 04:00:00 EDT 1957

OSTI ID:4338368

Brown, P G.M.; Fletcher, J M; Wain, A G

A separation of the individual nitrato nitrosylruthenium complexes which exist in aqueous nitric acid solutions has been achieved by paper chromatography, and the technique has also been applied to solutions of the complexes in TBP-HNO{sub 3-H{sub 2}O systems. It has been possible to determine the equilibrium compositions of solutions of these complexes, the partition coefficients, with TBP, of the individual complexes under certain specified conditions, and the rates of the reactions by which there is interchange between the complexes. This knowledge has been used to interpret the overall ruthenium distribution coefficients which are obtained when solutions of these complexes, under a wide variety of concentrations of aqueous nitric acid and of TBP, are intimately mixed. The conditions investigated are related to acid systems for the extraction by TBP of fissile material from nitric acid slutions of irradiated fuels: in such solutions, fission product ruthenium can occur, to a greater or lesser extent, as these nitrato (RuNO) complexes. (auth)

• Research Organization: Great Britain Atomic Energy Research Establishment, Harwell, Berks, England (United Kingdom)
• NSA Number: NSA-11-013289
• OSTI ID: 4338368
• Report Number(s): AERE-C/R-2260
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ACIDITY
BUTYL PHOSPHATES
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
MIXING
NITRIC ACID
NITROGEN OXIDES
NITROSYL RADICALS
ORGANIC NITROGEN COMPOUNDS
PAPER
QUANTITY RATIO
REACTION KINETICS
RUTHENIUM COMPLEXES
RUTHENIUM NITRATES
SOLUTIONS
SOLVENT EXTRACTION
WATER