Metal Oxide Sorbents for the Separation of Radium and Actinium
2020
Brown, M Alex
The inorganic, normal-phase sorbents alumina, titania, and zirconia were evaluated and screened for the separation of Ba, La, ²²⁸Ra, ²²⁸Ac, and ²¹²Pb in a dilute acid matrix. The results show that the sorbents are capable of fractionating the ions between pH 1 and 8. A stationary zirconia column was used to isolate Ba from La and Ra from Ac/Pb; elution profiles of each separation are presented. The utility and implications of these sorbents are discussed with respect to large-scale production of ²²⁵Ac from radium targets.
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