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Reduction kinetics of Np(VI) by n-butyraldehyde in tributyl phosphate diluted with n-dodecane
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Yasutoshi Ban
Published/Copyright:
September 25, 2009
Summary
The reduction kinetics of Np(VI) by n-butyraldehyde in 30% TBP solution diluted with n-dodecane were analyzed by spectrophotometry. Based on the results of both n-butyraldehyde and nitric acid concentration dependences on the Np(VI) reduction reaction, the rate equation was obtained as –d[Np(VI)]/dt=k[n-C3H7CHO]0.8[HNO3]–2.0[Np(VI)]t where k=(1.0±0.2)× 10–3 M1.2 min–1 at 294±1 K. The activation energy of the reaction was 76±5 kJ/mol.
Published Online: 2009-9-25
Published in Print: 2004-12-1
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Articles in the same Issue
- Evidence for the formation of sodium hassate(VIII)
- Study of nitrate complex formation with trivalent Pm, Eu, Am and Cm using a solvent extraction technique
- Hydrolysis of Np(IV) and Pu(IV) and their complexation by aqueous Si(OH)4
- Reduction kinetics of Np(VI) by n-butyraldehyde in tributyl phosphate diluted with n-dodecane
- Speciation study on complex formation of uranium(VI) with phosphate and fluoride at high temperatures and pressures by time-resolved laser-induced fluorescence spectroscopy
- Stability constants of uranium(IV)-α-isosaccharinic acid and gluconic acid complexes
- Uranium(VI) complexes with sugar phosphates in aqueous solution
- Uranium kernel formation via internal gelation
- Investigation of evaporation characteristics of polonium and its lighter homologues selenium and tellurium from liquid Pb-Bi-eutecticum
- Synergistic extraction of Ce(III), Eu(III) and Tm(III) with a mixture of picrolonic acid and tributylphosphine oxide in chloroform
- Synthesis of malonic acid-functionalized Amberlite XAD-4 and its use in solid phase extraction/preconcentrative separation of thorium(IV)
- INAA methodology using low power reactor for the characterization of IAEA-433; Coastal marine sediment as a potential reference material
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