Effect of iso-propanol on the radiolysis of aqueous solutions of periodate

Patil, S. F.; Patil, Rahul; Mudaliar, M.

doi:10.1007/bf02061818

Cited by 6 publications

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“…Moreover, periodate was Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 5/24/15 9:23 PM reported to act as a scavenger of hydrated electrons and other reducing radiolysis products of water [23,24].…”

Section: Introductionmentioning

confidence: 99%

Americium(III) oxidation by copper(III) periodate in nitric acid solution as compared with the action of Bi(V) compounds of sodium, lithium, and potassium

Sinkov¹,

Lumetta²

2015

Radiochimica Acta

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The oxidative action of a Cu(III) periodate compound toward Am(III) in nitric acid was studied. The extent of oxidation of Am(III) to Am(VI) was investigated using a constant initial Cu(III)-to-Am(III) molar ratio of 10 : 1 and varying nitric acid concentrations from 0.25 to 3.5 mol/L. From 0.25 to 3 mol/L HNO 3 , more than 98% of the Am(III) was oxidized to Am(VI); however, at 3.5 mol/L HNO 3 , the conversion to Am(VI) was only 80%. Increasing the Cu(III)-to-Am(III) molar ratio to 20 : 1 in 3.5 mol/L HNO 3 resulted in 98% conversion to Am(VI). For comparison, oxidation of Am(III) with NaBiO 3 was studied at 3.5 mol/L HNO 3 and the same stoichiometric excess of Bi(V) oxidant over Am(III) (stoichiometric ratio of 3.33 : 1). With NaBiO 3 , the extent of Am(III) conversion to Am(VI) was only 19%, while with the Cu(III) compound this value was found to be about 4 times higher under otherwise identical conditions. Similar results were obtained with other Bi(V) salts. These results show that the Cu(III) periodate compound is a superior oxidant to NaBiO 3 , yielding rapid conversion to Am(VI) in a homogeneous acidic solution, and is, therefore, an excellent candidate for further development of Am separation systems.

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Section: Introductionmentioning

confidence: 99%