UNIVERSAL METHOD OF SELECTIVE EXTRACTION OF SALTS OF TRANSITION, RARE-EARTH AND ACTINOID ELEMENTS FROM COMBINATION SOLUTIONS BY MEANS OF NANOPOROUS MATERIALS Russian patent published in 2013 - IPC C22B3/20 B82B3/00 C22B59/00 

FIELD: metallurgy.

SUBSTANCE: method involves selective extraction of salts in volumes of nanopores of nanoporous conducting materials due to effect of electrostatic interaction of dipole moments of solvated ionic complexes of transition, rare-earth and actinoid elements with electric field of double electric layer of "nanopore wall - solution" boundary line. The method is implemented by subsequent filling of nanopore of nanoporous conducting material with the solution containing ionic complexes of transition, and/or rare-earth and/or actinoid elements, displacement from nanopore of ionic complexes of transition, rare-earth and actinoid elements weakly localised in nanopores by means of pressure of gases or liquids, by filling of nanopore with solution of inorganic acid of high concentration, and by extracting from nanopores of residual ionic complexes of transition, rare-earth and actinoid elements by means of pressure of gases or liquids. The above method can be implemented in an electrochemical cell.

EFFECT: obtaining cheap and competitive compounds of the above elements of high technical purity.

45 cl, 18 dwg, 4 ex