Journal
SOLVENT EXTRACTION AND ION EXCHANGE
Volume 23, Issue 3, Pages 319-344Publisher
TAYLOR & FRANCIS INC
DOI: 10.1081/SEI-200049898
Keywords
diglycolamide; extraction chromatography; actinide and lanthanide separations; alkaline earth separations
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Two new extraction chromatographic resins containing the diglycolamide class of molecules have been prepared and characterized, and potential applications identified. The new resins consist of 40 weight percent N, N, N'N' tetraoctyldiglycolamide (TODGA) and N, N, N'N' tetrakis-2-ethylhexyldiglycolamide (TEHDGA) sorbed onto 50-100 mu m particle size Amberchrom (R) CG- 71. The new resins have capacities for Eu of approximately 0.086 mmol/ mL of bed and are quite stable to extractant leaching. The resins were characterized by measuring the batch uptake of actinides, lanthanides, and yttrium, alkaline earths and 13 selected transition and post-transition elements from HNO3 and HCl. Based on the uptake data, a number of very efficient separations were achieved using 0.5 - 2mL bed volume columns and room temperature operation.
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