ChemInform Abstract: A KINETIC STUDY OF THE REACTION OF PLUTONIUM(IV) WITH HYDROXYLAMINE

Barney, G.S.

doi:10.1002/chin.197644025

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Acid hydrolysis of free hydroxamic acids to hydroxylamine (itself a reducing agent for a range of actinide species [10,11]) and the parent carboxylic acid is well known [12].…”

Section: Introductionmentioning

confidence: 99%

The Hydrolysis of Hydroxamic Acid Complexants in the Presence of Non-oxidizing Metal Ions 1: Ferric Ions

2007

View full text Add to dashboard Cite

Hydroxamic acids (XHAs) are organic compounds with affinities for cations such as Fe 3+ , Np 4+ and Pu 4+ and have been identified as useful reagents in nuclear fuel reprocessing. Acid catalysed hydrolysis of free XHAs is well known and may impact negatively on reprocessing applications. Hydrolysis of metal bound XHAs within metal ion-XHA complexes is less understood. With the aid of speciation diagrams, we have modelled UV-visible spectrophotometric kinetic studies of the acid-catalysed hydrolysis of acetohydroxamic acid (AHA) bound to the model ion Fe(III). These studies have yielded the following for the hydrolysis of AHA in the Fe(AHA) 2+ complex at 293 K: (i) the order with respect to [H + ] during the rate determining step, m = 0.97, the same as for the free ligand, indicating a similarity of mechanism; and (ii) the rate parameter, k 1 =1.02 x 10-4 dm 3 •mol-1 •s-1 , greater than that for the free ligand, k 0 = 1.84 x 10-5 dm 3 •mol-1 •s-1 for pH >-0.5, a result consistent with a Hammett analysis of the system.

show abstract

“…Acid hydrolysis of free hydroxamic acids to hydroxylamine (itself a reducing agent for a range of actinide species [10,11]) and the parent carboxylic acid is well known [12].…”

Section: Introductionmentioning

confidence: 99%

The Hydrolysis of Hydroxamic Acid Complexants in the Presence of Non-oxidizing Metal Ions 1: Ferric Ions

2007

View full text Add to dashboard Cite

show abstract

“…One important trend in the developing future reprocessing extraction processes is the use of high efficient salt-free reductants in U/Pu separation and purification process, such as butyraldehyde and isobutyraldehyde [8][9][10], hydrazine [11] and hydroxylamine [12][13][14][15][16] as well as their derivatives [17][18][19][20][21][22][23][24]. , -dimethylhydroxylamine (DMHAN) is one derivative of hydroxylamine in which two H atoms are both substituted by methyl group.…”

Section: Introductionmentioning

confidence: 99%

An advanced purex process based on salt-free reductants

Guoan

Tang

et al. 2014

Radiochimica Acta

View full text Add to dashboard Cite

An advanced plutonium and uranium recovery process has been established based on two organic reductants, , -dimethylhydroxylamine (DMHAN) and methylhydrazine (MH), as U/Pu separation reagents. This Advanced Purex process based on Organic Reductants (APOR) is composed of three cycles, including U/Pu codecontamination/separation cycle, uranium purification cycle and plutonium purification cycle. Using DMHAN and MH as plutonium stripping reagents in the U/Pu codecontamination/separation cycle and plutonium purification cycle, the APOR process exhibits high performance with following highlights: 1) the process is much simpler because of the elimination of Tc scrubbing operation and the supplement extraction operation, 2) high efficiency of U/Pu separation can be achieved in the first cycle, 3) plutonium product solution of high concentration can be obtained in the Pu purification cycle with a simple extraction operation instead of circumfluent extraction or evaporation of the plutonium solution.

show abstract

Oxidation of Pu(III) by Nitric Acid in Tri-n-Butyl Phosphate Solutions. Part I. Kinetics of the Reaction and Its Effect on Plutonium Losses in Countercurrent Liquid-Liquid Extraction

et al. 1982

View full text Add to dashboard Cite

ChemInform Abstract: A KINETIC STUDY OF THE REACTION OF PLUTONIUM(IV) WITH HYDROXYLAMINE

Cited by 3 publications

References 1 publication

The Hydrolysis of Hydroxamic Acid Complexants in the Presence of Non-oxidizing Metal Ions 1: Ferric Ions

The Hydrolysis of Hydroxamic Acid Complexants in the Presence of Non-oxidizing Metal Ions 1: Ferric Ions

An advanced purex process based on salt-free reductants

Oxidation of Pu(III) by Nitric Acid in Tri-n-Butyl Phosphate Solutions. Part I. Kinetics of the Reaction and Its Effect on Plutonium Losses in Countercurrent Liquid-Liquid Extraction

Contact Info

Product

Resources

About