ADSORPTION BEHAVIOR OF BORON, GERMANIUM(I V) AND TELLURIUM(VI) ON SOME CHELATING RESINS CONTAINING PROPANEDIOL LIGAND

A series of chleating resins having the 1,2- or 1,3-diol ligand as a c helatins functional group were prepared and applied to the mutual sepa ration of semimetals such as boron, Ge(IV), and Te(VI). The resins wer e synthesized by the amination of chloromethylated polystyrene-divinyl benzene copolymer beads with some aminopropanediols in dioxane at 90 s imilar to-100 degrees C for 24 h. Elemental analysis and IR spectra of the resulting beads revealed that the desired amination had taken pla ce. The 1,2-diol resin exhibited an adsorption ability for boron, Ge(I V), and Te(VI) in neutral and alkaline media. On the other hand, the 1 ,3-diol resins showed an affinity for boron but little or none for Ge( IV) and Te(VI). This difference may be attributed to the fact that the I,3-diol ligands are not favorable for complexation with oxyacids or oxyanions of Ge(IV) and Te(VI). The mutual separation of these semimet als was attempted using a small column packed with 2 cm(3) resin beads (5 mm phi X 100 similar to 110 mmH). Boron and Ge(IV) were eluted qua ntitatively from the 1,2-diol resin column with 1 M hydrochloric acid, but Te(VI) was not eluted by any acid in this column. Furthermore, bo ron can be separated from Ge(IV) and Te(VI) using the 1,3-diol resin c olumn, in which boron was retained but Ge(IV) and Te(VI) passed throug h the column with only small uptake in the initial stage.