Separation of f-elements by resins impregnated with amides of pyridine-2,6-dicarboxylic acid
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Chemistries of trivalent lanthanides and actinides under aqueous processing conditions are so similar that their satisfying separation is extremely challenging. Preparation of a functionalized solid material by impregnation of a support resin with an organic extraction phase is one of possible routes for novel materials development. The ortho- and para-dialkyl-diaryl-pyridine-2,6-dicarboxyamides were impregnated into two macroporous matrices (PS-DVB and PMA). Influence of the diamide structure, matrix type and conditions for effective extraction chromatography separation of Am(III) from Eu(III) was studied in dynamic conditions. The prepared sorbents exhibited more strong adsorptions of Am(III) to compare with Eu(III). Maximal separation factor (~ 90) was achieved with use of citrate ion as complexing eluent.
KeywordsAmericium Europium Sorption Separation Diamides of pyridine-2,6-dicarboxylic (dipicolinic) acid
This work was partially supported by the Grant 074-U01 (Government of Russian Federation).
- 6.Braun T, Ghersini G (1975) Extraction chromatography. Elsevier, New YorkGoogle Scholar
- 7.Eichrom (2010) Eichrom Technologies LLC 2010 Product Catalog. http://eichrom.com
- 10.Arisaka M, Watanabe M, Kimura T (2007) Separation of actinides(III) from lanthanides(III) by extraction chromatography using new N,N′-dialykyl-N,N′-diphenylpyridine-2,6-dicarboxyamides. GLOBAL 2007:111–113Google Scholar
- 12.Arisaka M, Watanabe M, Sugo Y, Kobayashi K, Kanao O, Kimura T (2014) Development of extraction chromatographic adsorbent using alkylpyridinedicarboxyamides as extractant for separation of trivalent minor actinides from lanthanides–stability and separation ability against nitric acid exposure and gamma-ray irradiation. J Nucl Sci Technol 51:457–464CrossRefGoogle Scholar