Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

Chromatography experiments using a tertiary pyridine resin have been carried out in methanolic nitric acid solution for the separation of trivalent actinides (An) and lanthanides (Ln). The elution behavior of trivalent An (Am and Cm) is similar to that of middle Ln series in the nitric acid system,...

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Published inJournal of alloys and compounds Vol. 408; pp. 1052 - 1055
Main Authors Ikeda, Atsushi, Itoh, Keisuke, Suzuki, Tatsuya, Aida, Masao, Fujii, Yasuhiko, Mitsugashira, Toshiaki, Hara, Mitsuo, Ozawa, Masaki
Format Journal Article
LanguageEnglish
Published Elsevier B.V 09.02.2006
Subjects
Actinides
Alcohol
Chloride ion
Lanthanides
Nitrate ion
Pyridine
Alcohol
Actinides
Pyridine
Lanthanides
Nitrate ion
Chloride ion
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Summary:Chromatography experiments using a tertiary pyridine resin have been carried out in methanolic nitric acid solution for the separation of trivalent actinides (An) and lanthanides (Ln). The elution behavior of trivalent An (Am and Cm) is similar to that of middle Ln series in the nitric acid system, while the trivalent An are separated from Ln in methanolic hydrochloric acid solution. The calculated distribution coefficients ( K d ) indicate that the adsorbability of trivalent An and Ln depends on their ionic radii in the nitric acid system. The different separation behavior observed between nitric acid and hydrochloric acid systems is discussed from the viewpoint of solvation structures.
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ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2004.11.096