FIELD: chemistry.
SUBSTANCE: invention relates to method of oxygen isotope enrichment. Method involves production of oxygen containing primary enriched with oxygen isotope by oxygen raw material distillation using first distillation device, obtaining water by hydrogenation of oxygen containing primary enriched oxygen isotope, production of nitrogen oxide removed during distillation of nitrogen oxide raw material, using the second distillation device, and production of nitrogen oxide and water by means of conducting chemical exchange reaction between water and nitrogen oxide, as result of which nitrogen oxide with high concentration of oxygen and water is produced, having low concentration of oxygen isotope, wherein nitrogen oxide with high concentration of oxygen is supplied to second distillation device, and oxygen obtained by electrolysis of water with low concentration of oxygen isotope, is returned to first distillation apparatus.
EFFECT: invention provides effective oxygen isotope enrichment.
7 cl, 2 dwg
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