Nitrocellulose Membrane,Modified by RC(S)NHP(X)(OiPr)2 (X = S,R = PhNH; X = O,R = PhNH,Ph), for Sorption Extraction of Cobalt Cations |
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| Authors: | Felix D Sokolov Maria G Babashkina Damir A Safin Axel Klein |
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| Institution: | 1. A. M. Butlerov Chemistry Institute , Kazan State University , Kazan, Russia;2. A. M. Butlerov Chemistry Institute , Kazan State University , Kazan, Russia;3. Institut für Anorganische Chemie , Universit?t zu K?ln , K?ln, Germany;4. Institut für Anorganische Chemie , Universit?t zu K?ln , K?ln, Germany |
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| Abstract: | The complexation and extraction properties of RC(S)NHP(X)(OiPr)2 X = S, R = PhNH (HLI); X = O, R = PhNH (HLII), Ph (HLIII)] towards cobalt cations were studied. The nitrocellulose membrane was used as a carrier for HLI?III. The maximal degree of extraction of cobalt cations from an aqueous solution is observed at pH = 7.8–8.4. It was established that complexes formed are kept in a water solution on a surface of the carrier and washed away in 96% aqueous ethanol. The membrane modified by HLI allows extraction and concentration of Co(II) selectively, while the modification by HLIII leads to the selective extraction of Co(III). |
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| Keywords: | Cobalt complex membrane extraction thioamide thiourea |
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