Separation of lithium isotopes by NDOE bonded Merrifield peptide resin |
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| Authors: | D W Kim J S Kim J S Jeon H J Kim N S Lee |
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| Institution: | (1) Department of Chemistry, Physical Chemistry Laboratory, College of Natural Sciences, Chungbuk National University, 361-763 Cheongju, Korea;(2) Department of Chemistry, Konyang University, 320-800 Nonsan, Korea |
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| Abstract: | The novel NDOE (1,12,15-triaza-3,4:9,10-dibenzo-5,8-dioxacycloheptadecane) ion exchange resin was prepared. The ion exchange
capacity of NDOE azacrown ion exchanger was 0.2 meq/g dry resin. A study on the separation of lithium isotopes was carried
out with NDOE novel azacrown ion exchange resin. The lighter isotope,6Li concentrated in the solution phase, while the heavier isotope,7Li is enriched in the resin phase. By column chromatography (0.1 cm I.D.×32 cm height) using 2.0M NH4Cl as an eluent, a separation factor,a=1.0201 was obtained. |
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