Electrodeposition of Americium and Physicochemical Behaviour of the Solution

Becerril-Vilchis, A.; Meas, Y.; Rojas-Hernándéz, Alberto

doi:10.1524/ract.1994.64.2.99

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…Owing to the nature of the americium and plutonium species in nitric acid media [7] and the basic nature of the ligands, in particular the amine and the pyridine group, the extraction studies were performed over a large range of nitric acid concentration, usually [HNO 3 ] varying from 10 À3 M up to 4 or 6 M. In these operating conditions, americium will be found in oxidation state (III) and plutonium in oxidation state (IV).…”

Section: Resultsmentioning

confidence: 99%

“…The distribution coefficient for Pu(IV) in nitric acid for hybrid material G7d was measured to determine fundamental differences between two actinides, such as Pu(IV) and Am(III), showing different speciation along a nitric acid concentration range [7]. To avoid plutonium hydrolysis problems, the study has to be limited to a nitric acid concentration ranging from 0.5 M to 6 M.…”

Section: Pu(iv) Extraction By Polyamines Functionalised Materialsmentioning

confidence: 99%

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Extraction of plutonium and americium using silica hybrid materials

Meyer¹,

Bourg²,

Conocar³

et al. 2007

Comptes Rendus. Chimie

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These studies are related to the development of an innovative solution for the extraction of transuranium elements from high radioactive level acid solutions. In this frame, advanced silica hybrid materials were developed by hydrolysis and condensation of molecular species functionalised with complexing functions, leading to the improvement of solideliquid extraction techniques.The influence of the nature of the complexing organic groups, of the microstructure and of the extractant loading in the condensed matter on the distribution coefficient is determined in the case of americium and plutonium extractions from nitric acid media. Preliminary studies on the americiumeeuropium separation using these materials were also tackled.

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Section: Resultsmentioning

confidence: 99%

Section: Pu(iv) Extraction By Polyamines Functionalised Materialsmentioning

confidence: 99%

Extraction of plutonium and americium using silica hybrid materials

Meyer¹,

Bourg²,

Conocar³

et al. 2007

Comptes Rendus. Chimie

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show abstract

“…Usual paths for the preparation of a sources have to be considered more as an "art" than as a true electrochemical process. It appears that only Becceril-Vilchis et al [2] were able to predict the experimental conditions for electrodeposition (hydrolytic precipitation) of Am onto solid electrodes with a view to a sources preparation.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Actinides by Electropolymerization of Acrylonitrile : Application to the Preparation of Alpha Spectroscopy Sources

Martinot

Mertens

Lopes³

et al. 1996

Radiochimica Acta

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Electrochemistry / Electropolymerization / Organic media / Uranium / Neptunium / a Spectrometry sources / Polyacrylonitrile SummaryThe electrochemical reduction of uranium and neptunium ions is achieved in aprotic solvents in presence of acrylonitrile. The cathodic deposit on a usual metal consists of a grafted polyacrylonitrile layer in which actinide oxide or actinide metal has been inserted as a consequence of the overall cathodic reaction. As polyacrylonitrile is an insulating material, the electrochemical polymerization reaction is stopped when the polymer layer thickness reaches 1000 A at maximum.The material we thus produced may be used as an alpha spectroscopy source and we report here the results originating from the preparation of more than hundred samples. -ECI V) Fig. 1. Voltammetric two-step reduction of acrylonitrile (0.1 M) in AN with Et 4 NC10 4 , 0.05 M; Ni electrode, total surface: 2 cm 2 ; υ = 50 mV s" 1 .

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The Actinides

Stoll¹

2006

Encyclopedia of Electrochemistry

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The sections in this article are Introduction Actinium Aqueous Solutions Electrodeposition Thorium Aqueous Solutions Nonaqueous Solutions Molten‐salt Solutions Electrodeposition Organometallic and Coordination Compounds Protactinium Aqueous Solutions Electrodeposition Nonaqueous Solutions Uranium Aqueous Solutions Electrodeposition Molten‐salt Solutions Nonaqueous Solutions Neptunium Aqueous Solutions Electrodeposition Nonaqueous Solutions Molten‐salt Solutions Plutonium Aqueous Solutions Electrodeposition Molten‐salt Solutions Americium Aqueous Solutions Molten‐salt Solutions Nonaqueous Solutions Electrodeposition Curium Electrodeposition Berkelium Californium Einsteinium Fermium Mendelevium Nobelium

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Electrodeposition of Americium and Physicochemical Behaviour of the Solution

Cited by 8 publications

References 10 publications

Extraction of plutonium and americium using silica hybrid materials

Extraction of plutonium and americium using silica hybrid materials

Immobilization of Actinides by Electropolymerization of Acrylonitrile : Application to the Preparation of Alpha Spectroscopy Sources

The Actinides

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