Separation of rhenium by thin-layer chromatography with polyethyleneimine cellulose in hydrochloric acid media |
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Authors: | T Shimizu S Abe |
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Institution: | (1) Department of Chemistry, Faculty of Education, Gunma University, Aramaki, 371 Maebashi, Japan |
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Abstract: | Summary The thin-layer chromatographic behavior of 49 inorganic ions on polyethyleneimine (PEI) cellulose has been investigated in
hydrochloric acid media (0.01–1.0 mol dm−3). The sorption on the cellulose decreases with increasing acid concentration for most of the ions, but As(III), Ti(IV) and
Te(VI) do not exhibit any Rf variation with the acid concentration. The Rf spectra of TI(I), Cd(II), Pb(II) and Zn(II) have a maximum. Ag(I), Bi(III), Nb(V), Ta(V), Mo(VI) and W(VI) are retained tightly
on the layer, due to either insoluble salt formation or extensive hydrolysis. The extremely low Rf values of Hg(II), Pd(II), Au(III), Ru(III) and Pt(IV) are accounted for by stability of their chlorocomplexes. Re(VII) distributes
chromatographically, having moderate Rf values between 0.3 and 0.6, so that the selective separation of Re(VII) from the other ions is feasible. |
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Keywords: | Thin-layer chromatography Polyethyleneimine (PEI) cellulose Separation of 49 inorganic ions Re(VII) separation |
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