METHOD OF CONCENTRATING OXYGEN ISOTOPE Russian patent published in 2008 - IPC B01D59/00 B01D59/34 C01B13/02 

FIELD: chemistry.

SUBSTANCE: ozone or peroxide, containing ¹⁷O and ¹⁸O isotopes, is irradiated with near infrared radiation in the 700-1000 nm range or visible light in the 450-850 nm range, under the effect of which molecules undergo photo-dissociation with formation of a mixture of oxygen molecules and undissociated molecules of ozone or peroxide. Oxygen molecules are separated from undissociated molecules of ozone or peroxide during the concentration stage. At least one noble gas is added to ozone: krypton, xenon, and radon. The concentration stage can be achieved, for example, through distillation with addition of at least, one of the noble gases helium, neon, argon or krypton. The peroxide used can be in form of hydroperoxides, (di)alkylperoxides, peroxyacids, including peracids, (di)acylperoxides, complex peroxyesters, peroxycarbonates, peroxydicarbonates, diperoxycarbonates, peroxalates, cyclic peroxides, ozonides and endoperoxides, nitric acid esters and nitrous acid esters.

EFFECT: invention allows for concentrating oxygen in form of its stable isotopes or compounds, with a simple structure, for example, water, reducing the size of the device and shortening the process.

26 cl, 8 dwg, 3 tbl