METHOD FOR OBTAINING ISOTOPE VARIETY OF ELEMENTARY GERMANIUM WITH HIGH ISOTOPE AND CHEMICAL PURITY Russian patent published in 2018 - IPC C22B41/00 C01G17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the development of the method of obtaining isotope-enriched germanium, which can be used in microelectronics, infrared optics, nanophotonics, fundamental physical research. The source material for the production of monoisotopic ⁷²Ge, ⁷³Ge, ⁷⁴Ge, ⁷⁶Ge is monogermane enriched with one isotope germanium obtained in the enriched condition by the consistent separation in a centrifuge separation of monogermane with a natural isotopic composition. Germanium is isolated by monogermane pyrolysis at a temperature of 350-450°C and a pressure of 1050-1100 mbar. It is carried out in a quartz tube reactor, the inner walls of which are covered with a layer of pyrolytic carbon. After precipitation of polycrystalline germanium, it is fused directly into the reactor in a compact ingot.

EFFECT: obtaining isotopes of germanium with a high degree of isotopic and chemical purity with a high yield of the product.

3 cl, 4 ex