Инд. авторы:	Fedoseeva Y.V., Okotrub A.V., Koroteev V.O., Borzdov Y.M., Palyanov Y.N., Shubin Y.V., Maksimovskiy E.A., Makarova A.A., Munchgesang W., Bulusheva L.G., Vyalikh A.
Заглавие:	Graphitization of C-13 enriched fine-grained graphitic material under high-pressure annealing
Библ. ссылка:	Fedoseeva Y.V., Okotrub A.V., Koroteev V.O., Borzdov Y.M., Palyanov Y.N., Shubin Y.V., Maksimovskiy E.A., Makarova A.A., Munchgesang W., Bulusheva L.G., Vyalikh A. Graphitization of C-13 enriched fine-grained graphitic material under high-pressure annealing // Carbon. - 2019. - Vol.141. - P.323-330. - ISSN 0008-6223. - EISSN 1873-3891.
Внешние системы:	DOI: 10.1016/j.carbon.2018.09.065; РИНЦ: 38646395; SCOPUS: 2-s2.0-85054324044; WoS: 000450312600035;
Реферат:	eng: Hot pressing is one of the promising routes for graphitization of carbon materials. In the present work, high-pressure high-temperature behaviour of 13 C-enriched fine-grained graphitic material has been studied by using a set of experimental tools such as scanning electron microscopy, Raman scattering, Xray diffraction, X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopies, and solid-state nuclear magnetic resonance (NMR) spectroscopy. The material has been annealed at a temperature of 1200 or 1500 degrees C using a stabilizing pressure of 5 GPa. It shown, that addition of small amount of water during the annealing at 1200 degrees C results in a better local atomic ordering of carbon material and increases the hydrocarbon fraction. Well-ordered graphite crystals enriched with C-13 isotope are formed on the surface of nickel ampule at 1500 degrees C. An increase in processing time from 2 to 15 h decreases the defect density and improves the graphitization level of the material. (C) 2018 Elsevier Ltd. All rights reserved.
Ключевые слова:	METHANE; DISORDER; CRYSTALLIZATION; WATER; CARBON; RAMAN-SPECTROSCOPY; DIAMOND CRYSTAL-GROWTH; TEMPERATURE; FILMS;
Издано:	2019
Физ. характеристика:	с.323-330