METHOD FOR PRODUCING EXTRA-PURE C FULLERENE CRYSTALS Russian patent published in 2012 - IPC C30B23/00 C30B29/02 C01B31/00 C01B31/02 B82B3/00 

Abstract RU 2442847 C2

FIELD: chemistry.

SUBSTANCE: the invention relates to chemistry, in particular, to growing crystals from gas-vapour phase. The method includes low-temperature processing of fullerene powder C60 in the dynamic vacuum of 10-4 Pa at the temperature of 720 K for three hours, then the processed powder is sublimated in the dynamic vacuum of 10-4 Pa at the temperature of 880 K for 8 hours, initial fullerene crystals C60 are grown from the sublimated powder in sealed quartz vessels at the temperature of 880 K and the temperature difference between the evporation zone and the growth zone of 5 K during 1-5 days. The final fullerene crystals C60 are grown from the initial crystals in conditions similar to the growth conditions for initial crystals.

EFFECT: production of fullerene crystals C60 with high structural perfection, relatively large size (4-8 mm length, 3-4 mm width and 1-2 mm thickness) almost without contaminants.

3 dwg, 1 ex

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RU 2 442 847 C2

Authors

Sidorov Nikolaj Sergeevich

Pal'Nichenko Andrej Vjacheslavovich

Glebovskij Vadim Georgievich

Bazhenov Anatolij Viktorovich

Fursova Tat'Jana Nikolaevna

Izotov Aleksandr Nikolaevich

Levchenko Aleksandr Alekseevich

Dates

2012-02-20Published

2010-05-19Filed