Экстракция сурьмы (III) производным 1,2,4-триазола из солянокислых растворов и определение условий отделения Sb (III) от Bi (III)

Abstract

The extraction of antimony (III) from hydrochloric acid solutions with 1-[2-(2,4-dichlorophenyl)-4- propyl-1,3-dioxolan-2-yl]-1H-1,2,4-triazole was studied. Optimal extraction conditions are found. It is assumed that antimony (III) is extracted by the anion exchange mechanism at a phase contact time of 5 min. The extractable antimo- ny (III) chlorocomplex was isolated and characterized by electron, IR spectroscopy and elemental analysis. The re- extraction and concentration of antimony (III) from hydrochloric acid solutions has been studied. The possibility of separating antimony (III) from bismuth (III) is shown.