najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2020-11-4-408-416najo-409Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХSupercritical fluid synthesis and possible properties of “cubic graphite”PokropivnyA. V.

Kyiv

apokr@ukr.netEnyashinA. N.

Ekaterinburg

enyashin@ihim.uran.ruSmolyarA. S.

Kyiv

KutsV. A.

Kyiv

GurinV. G.

Kyiv

AntipovS. A.

Kyiv

SilenkoP. M.

Kyiv

SoloninYu. M.

Kyiv

Frantsevich Institute for Problems of Materials Science NASU; G. V. Kurdyumov Institute for Metal Physics, NASUUkraineInstitute of Solid State Chemistry UB RASRussian FederationFrantsevich Institute for Problems of Materials Science NASU; M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation NASUUkraineInstitute of Magnetism NASUUkraineFrantsevich Institute for Problems of Materials Science NASUUkraine202029072025114408–416Copyright © Pokropivny A.V., Enyashin A.N., Smolyar A.S., Kuts V.A., Gurin V.G., Antipov S.A., Silenko P.M., Solonin Y.M., 20252025Pokropivny A.V., Enyashin A.N., Smolyar A.S., Kuts V.A., Gurin V.G., Antipov S.A., Silenko P.M., Solonin Y.M.Pokropivny A.V., Enyashin A.N., Smolyar A.S., Kuts V.A., Gurin V.G., Antipov S.A., Silenko P.M., Solonin Y.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/409

We report on supercritical fluid synthesis of an intermediate carbon phase – austite – at a pressure of 180 MPa and temperatures 500–700◦C from soot as a precursor and supercritical carbon dioxide as a solvent. According to the results of electron and X-ray diffractions, spectral measurements and density-functional theory calculations, the observed carbon phase is proved to be cubic with a lattice parameter value of 8.96±0.05 A and a˚ possible structural type as for KFI zeolite.

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The authors declare that there are no conflicts of interest present.