Extraction of trivalent americium and europium from nitric acid solution with a calixarene-based diglycolamide

Selected applications of calixarene derivatives

“…AuNPs 8,9 and AgNPs, 10 as well as organic NPs, 11 and serve for construction of sensors; [12][13][14] they also may be used as extractants of f-elements. 15,16 The present paper is a continuation of our previous reviews concerning covalently and noncovalently bound calixarene assemblies, 17 calixarenes functionalized at wide and narrow rims, 18 calixarenes substituted at meso positions, 19 calixarene complexes with metal ions, 20 as well as calixarenes and resorcinarenes. 21 Besides classical calixarenes, also calixarenes containing modified meso bridges are known, 22 they are calixradialenes, 23 ketocalixarenes 24 and homocalixarenes.…”

Extractants for rare earth metals

“…The results showed that the value of the extraction factor for Am(III) and Eu(III) increases with increasing concentration of nitric acid in the range from 0.5-5.0 mol/L. Ligand 43 showed higher selectivity for Eu(III) than for Am(III) with separation factor SF Am(III)/ Eu (III) in the range 4.5-7.3, that indicates its effectiveness in separation of cations of the lanthanides and actinides [30].…”

“…Результаты показали, что значение коэффициента извлечения для Am(III) и Eu(III) увеличивается с повышением концентрации азотной кислоты в интервале от 0,5-5,0 моль/л. Лиганд 43 проявил более высокую селективность для Eu(III), чем для Am(III) с фактором разделения SF Am(III)/ Eu(III) в пределах 4,5-7,3, что свидетель-ствует о его эффективности при раз-делении катионов лантаноидов и акти-ноидов [30].…”

UV-Vis and ESI MS/MS Study of Calix[4]arene Derivatives and Their Lanthanide Complexes

“…[2] The separation of An from Ln is an essential task to establish the transmutation technology (transformation of a large fraction of the long term source of radioactivity, radiotoxicity and heat, like the minor actinides Am and Cm and long lived fission fragments, into stable or short lived materials). [3] The presence of lanthanides, which account for almost one third of the fission products and are strong neutron-absorbing elements, will prevent the efficient transmutation of Am and Cm from HLLW. Such separation, however, is a key challenge due to the very similar chemical behavior of the two elements families.…”

“…Such separation, however, is a key challenge due to the very similar chemical behavior of the two elements families. [1][2][3] Some decades ago, in CEA (Commissariat à l'énergie atomique et aux énergies alternatives, France) the idea of using calixarenes for the selective extraction of radionuclides like 99 Tc and 135 Cs from HLLW was introduced. [1,4,5] Since then, significant attention has been paid on supramolecular ligands based on calixarene platforms in investigations oriented towards nuclear waste treatment.…”