Published March 2007
| Version v1
Journal article
Formal oxidation potentials of actinide couples in K10P2W17O61 solutions
Creators
- 1. RAN, Inst. Fizicheskoj Khimii i Ehlektrokhimii im. A.N. Frumkina, Moscow (Russian Federation)
Description
The formal oxidation potentials of the M(VI)/M(V), M(V)/M(IV), and M(IV)/M(III) couples for actinides from U to No and of the M(IV)/M(III) couples for some actinides in 1 M H+ or 1 M Na+ (pH ∼5-5.5) solutions containing K10P2W17O61 were calculated from the data on stability of complexes of f element ions with the unsaturated heteropolytungstate anion P2W17O 6110-. In some cases, the previously accepted values were subjected to major revision, especially the potentials of the An(V)/An(IV) couples. Problems arising in measuring the potentials of the couples involving Np(III) and Pu(III) which react with the heteropolyanion to form a heteropoly blue are discussed. The potentials of some M(III)/M(II) couples are estimated
Abstract (Russian)
Из данных по устойчивости комплексов ионов f-элементов с анионом ненасыщенного гетерополивольфрамата P2W17O6110- рассчитаны формальные окислительные потенциалы пар M(VI)/M(V), M(V)/ M(IV), M(IV)/M(III) для актинидов от U до No и потенциалы пар M(IV)/M(III) для некоторых лантанидов в растворах 1 моль/л Н+ или 1 моль/л Na+ (pH ∼5-5.5), содержащих K10P2W17O61. Принятые ранее значения в ряде случаев подверглись сильной корректировке. Особенно большие изменения касаются потенциалов пар An(V)/An(IV). Обсуждаются проблемы, возникающие при измерении потенциалов пар с участием Np(III), Pu(III), которые реагируют с гетерополианионом с образованием сини. Дается прогноз для потенциалов некоторых пар М(III)/М(II)Additional details
Additional titles
- Original title (Russian)
- Формальные окислительные потенциалы пар актинидов в растворах К
Publishing Information
- Journal Title
- Radiokhimiya
- Journal Volume
- 49
- Journal Issue
- 2
- Journal Page Range
- p. 135-138
- ISSN
- 0033-8311
- CODEN
- RADKAU
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 39010655
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ACTINIDE COMPLEXES; ACTINIDE COMPOUNDS; AQUEOUS SOLUTIONS; CATIONS; PH VALUE; RARE EARTH COMPLEXES; RARE EARTH COMPOUNDS; REDOX POTENTIAL; STABILITY; TUNGSTOPHOSPHATES; VALENCE
- Descriptors DEC
- CHARGED PARTICLES; COMPLEXES; DISPERSIONS; HOMOGENEOUS MIXTURES; IONS; MIXTURES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; REFRACTORY METAL COMPOUNDS; SOLUTIONS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS
Optional Information
- Notes
- 17 refs., 1 tab.