Boron isotope separation using continuous ion exchange chromatog

Details Boron isotope separation using continuous ion exchange chromatog Boron isotope separation using continuous ion exchange chromatog

1994-04-01

1995-08-22

Therkorn, Ernest G.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210656, 210657, 210659, 2101982, 423100, 423112, 423283, 423DIG7, B01D 1508

Patent

active

054437326

ABSTRACT:
This invention relates to a process of and apparatus for the continuous and selective separation of boron-10 (B.sup.10) isotope having high neutron capture cross-section from boron-11 (B.sup.10) isotope from a mixture of boron isotopes in a boric acid solution by using a weak base ion exchange resin and water eluant in a continuous annular chromatograph. The invention is a continuous, steady-state, method for separating boron isotopes in aqueous boric acid solutions, including the steps of: (A) preparing an aqueous boric acid feed solution comprising a mixture of boron isotopes; (B) loading the boric acid feed solution onto an ion exchange resin, preferably a weak base anion exchange resin, contained in an ion exchange column of a continuous annular chromatograph at a location on the column, the ion exchange column having a sufficient length and width to resolve isotopes of boron, especially the boron-10 and the boron-11 isotopes into distinct product fractions; (C) feeding an aqueous eluant, preferably water, onto the ion exchange resin in the column of the continuous annular chromatograph at a location on the column to elute the boric acid feed solution along the length of the column of said continuous annular chromatograph and to effect separation of the isotopes in the feed solution.

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