Immobilization of actinides in pyrochlore-type matrices produced by self-propagating high-temperature synthesis

The pyrochlore-type matrices containing up to 10% wt. of U, Np, Pu and Am oxides were produced by self-propagating high-temperature synthesis (SHS) proposed as a method of preparation of the ceramic mineral-like matrices for immobilization of actinides. It was shown that basically the matrices consi...

Full description

Saved in:
Bibliographic Details
Published inComptes rendus. Chimie Vol. 10; no. 10; pp. 1128 - 1130
Main Authors Vinokurov, S.E., Kulyako, Yu.M., Perevalov, S.A., Myasoedov, B.F.
Format Journal Article
LanguageEnglish
Published Elsevier SAS 01.10.2007
Subjects
Actinides
Immobilization
Matrices
Plutonium
Radioactivity
Immobilization
Matrices
Actinides
Plutonium
Radioactivity
Online AccessGet full text

Cover

More Information
Summary:The pyrochlore-type matrices containing up to 10% wt. of U, Np, Pu and Am oxides were produced by self-propagating high-temperature synthesis (SHS) proposed as a method of preparation of the ceramic mineral-like matrices for immobilization of actinides. It was shown that basically the matrices consist of a phase of yttrium titanate having pyrochlore structure with actinides incorporated isomorphically. Stability of these matrices relative to hydrothermal leaching of the actinides at 90 °C was studied: the leaching rate does not exceed 1 × 10 −7 g/(cm 2 day).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1631-0748
1878-1543
1878-1543
DOI:10.1016/j.crci.2007.04.011