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Isolation of the dodecahydro-closo-dodecaborate anion with chitosan from aqueous solutions

Research paper by V. I. Saldin, V. V. Sukhovey, L. N. Ignatieva, A. B. Slobodyuk, V. M. Buznik, Yu. M. Mikhailov

Indexed on: 08 Aug '10Published on: 08 Aug '10Published in: Theoretical Foundations of Chemical Engineering



Abstract

The possibility of isolating the dodecahydro-closo-dodecaborate anion from aqueous solutions using chitosan in the form of chitosanium dodecahydro-closo-dodecaborate (C6O4H9NH4)2B12H12 was studied. The optimum conditions for the precipitation of this scarcely soluble, readily filterable salt and its decomposition with alkaline reagents were found. The new technique was tested with real aqueous salt solutions for leaching the products of the high-temperature synthesis of the B12H122− anion.