Structural effect of N,N-dialkylamide on the extraction of thorium (IV) ion from nitric acid solution

摘要

N,N-dialkylamides, (octan-, decan- and dodecanamides) having ethyl and butyl groups as alkyl substituents, were synthesized in order to investigate their selectivity and capability in the extraction of Th(IV) from acidic nitrate media (3 and 6M HNO{sub}3) in nuclear reprocessing. The distribution ratios of Th (IV) with the amides in kerosene decrease with the increase of the alkyl chain length (C{sub}8, C{sub}10, C{sub}12), probably due to steric hindrance.