METHOD OF PRODUCING HIGHLY ENRICHED ISOTOPE C Russian patent published in 2019 - IPC B01D59/28 

FIELD: chemistry.

SUBSTANCE: invention relates to isotopic chemistry, and can be used for separation of carbon isotope mixtures during production of stable isotopes by low-temperature rectification of carbon oxide (II), in order to obtain ¹³C high concentration, which can be used in chemical, nuclear industry, medical research, as labeled atoms. Method of producing highly enriched isotope ¹³C includes preliminary concentration of target isotope by cryogenic rectification of carbon oxide (II), semi-product obtained as a result of pre-concentration in a cascade of rectification packed columns with concentration of ¹³C 92 % at, is fed into isotopic exchange reactor, in which on catalyst obtained by hydrothermal hardening of alumo-calcium cement containing oxides of CuO, ZnO, Al₂O₃, CaO, reaction of isotopic exchange takes place at room temperature ¹³C¹⁶O +¹²C¹⁸O↔¹³C¹⁸O +¹²C¹⁶O, then obtained mixture is cooled with liquid nitrogen in heat exchanger, after which final concentration of equilibrated mixture of carbon monoxide (II) molecules in rectification column is carried out.

EFFECT: technical result of the invention is to increase the concentration of target isotope ¹³C simultaneous simplification of hardware design process of separation of carbon isotopes.

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