Chromatography in the separation of stable isotopes
Abstract
The feasibilities of chromatographic methods for the separation of stable isotopes, such as isotopes of hydrogen, lithium, boron, and nitrogen, are considered. The advantages of these methods compared to traditional physicochemical gas-liquid systems, mainly used for separating isotope mixtures, are that the HETS values are smaller, stopping the process even for a sufficiently long time does not lead to a fatal change in the distribution of the separated components over the layer, usually no special temperature conditions are required. At the same time, in most cases, these methods have not yet been able to compete significantly with traditional technologies for the separation of stable isotopes by rectification and chemical isotope exchange in gas-liquid systems. This is due to their periodicity, the need to use large quantities of auxiliary reagents and insufficiently high productivity. Therefore, in ongoing research on the use of chromatographic methods for isotope separation, attempts are made to solve these problems. The greatest successes have been achieved in the separation of mixtures of dihydrogens by chromatographic methods, which is used in the creation of technologies for the preparation and regeneration of fuel for thermonuclear fusion, and for obtaining high-pure dihydrogens for metrological studies.
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