Published February 1983 | Version v1
Report Open

Preliminary tests on the Pu(IV)-polymers

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Description

It is possible to obtain polymeric species from acid solutions of plutonium by water dilution or slow neutralization. In those two processes the heating improves the polymerization. We describe the conditions of these compounds formation when steam injected in low-acid nitric solutions. The soluble Pu(IV)-polymers are not absorbed by cation-exchangers. They have a well-characterized absorbance spectrum different from that of ionic species. They are stable even after the dilution in the same medium. Inversely, the change of medium including the acidification is able to induce the hydroxide precipitation

Availability note (English)

MF available from INIS under the Report Number.

Abstract (French)

Des polymeres de plutonium peuvent se transformer dans les solutions acides par dilution a l'eau ou neutralisation menagee, cette formation etant dans les deux cas favorisee par le chauffage. Nous decrivons les conditions d'apparition de ces composes lorsque l'on injecte de la vapeur d'eau dans des solutions nitriques de faible acidite. Ces polymeres solubles ne sont pas fixes sur un echangeur de cations. Ils presentent un spectre d'absorption caracteristique, different de celui des especes ionisees et sont stables apres dilution dans le meme milieu. En revanche, le changement de milieu, y compris l'acidification, peut favoriser la precipitation de l'hydroxyde

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Additional details

Additional titles

Original title (French)
Experimentations preliminaires sur les polymeres de plutonium

Publishing Information

Imprint Pagination
37 p.
Report number
CEA-R--5212

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
14798416
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
AQUEOUS SOLUTIONS; HYDROLYSIS; OXIDATION; PH VALUE; PLUTONIUM COMPOUNDS; POLYMERIZATION; POLYMERS; QUANTITY RATIO; REDUCTION; SPECTROPHOTOMETRY
Descriptors DEC
ACTINIDE COMPOUNDS; CHEMICAL REACTIONS; DECOMPOSITION; DISPERSIONS; HOMOGENEOUS MIXTURES; MIXTURES; SOLUTIONS; SOLVOLYSIS; TRANSURANIUM COMPOUNDS