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

摘要

A process for separating carbon isotopes, which comprises contacting an aqueous solution containing acid dissociation type and non-dissociation type chemical species of carbon-containing acids with a solid phase anion exchange resin to thereby simultaneously conduct a carbon isotope exchange reaction between said acid dissociation type chemic species and non-dissociation type chemical species and adsarb said acid dissociation type chemical species on said anion exchange resin, thus C¹² and C¹³ being separated into the solution phase and the solid phase, respectively, or vice versa, for the concentration of C¹³. This process is extremely effective and can be conducted inexpensively as compared with conventional separating processes by chemical exchange between gas and liquid phases, between gas and solution phases, or between solution and solution phases.