METHOD OF CONCENTRATING NITROGEN ISOTOPES Russian patent published in 2016 - IPC B01D59/00 B01D59/02 B01D59/28 F25J3/02 

FIELD: chemistry.

SUBSTANCE: invention relates to separation of stable nitrogen isotopes ¹⁴N and ¹⁵N. Method of nitrogen isotopes concentration involves carrying out of a counterflow mass exchange process using molecular nitrogen as a working substance; at that, the gas mixture of nitrogen isotopes is brought into contact with the solution of transition metal complex nitrogen compound capable of thermal abstraction of molecular nitrogen and entering with it into the reaction of chemical isotope exchange with accumulation of ¹⁵N in one phase, and ¹⁴N - in the other phase.

EFFECT: invention ensures an improvement of nitrogen isotopes separation coefficient, as well as an effective and environmentally safe concentration of isotope ¹⁵N.

3 cl, 5 ex