A METHOD FOR THE SEPARATION OF CARBON ISOTOPES BY CHEMICAL EXCHANGE METHOD

摘要

PCT No. PCT/JP80/00326 Sec. 371 Date Aug. 10, 1981 Sec. 102(e) Date Aug. 10, 1981 PCT Filed Dec. 2, 1980 PCT Pub. No. WO81/01802 PCT Pub. Date Jul. 9, 1981.A method for the separation of the isotopes of carbon comprising contacting an aqueous solution containing an acid-dissociated type chemical species of a carbon-containing acid and a non-dissociated type chemical species of said acid with an anion exchange resin as a solid phase, thereby to allow an isotope exchange reaction with respect to carbon to proceed between said acid-dissociated type chemical species and said non-dissociated type chemical species and, concurrently, to adsorb said acid-dissociated type chemical species on said anion exchange resin, and separate C12 and C13 respectively into a solution phase and the solid phase or the solid phase and a solution phase, whereby C13 is concentrated. This method can be practised at an extremely favorable efficiency and inexpensive cost, as compared with the prior art method for the separation utilizing a distillation method or a chemical exchange method between gas-liquid phases, gas-solution phases, solution-solution phases and the like.