Journal of Siberian Federal University. Mathematics & Physics / Formation of Onion-like Structures from Pitch Coke under Pressure

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics: 2018, Vol. 11, Issue 4
Authors
Kulnitskiy, Boris A.; Churkin, Valentin D.; Popov, Mikhail Yu.; Dmitriev, Anton V.; Perezhogin, Igor A.; Ivanov, Leonid A.; Blank, Vladimir D.
Contact information
Kulnitskiy, Boris A.: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia; ; Churkin, Valentin D.: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia; ; Popov, Mikhail Yu.: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia; ; Dmitriev, Anton V.: Chelyabinsk State University Chelyabinsk, Brothers Kashirin, 454001 Russia; ; Perezhogin, Igor A: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia; ; Ivanov, Leonid A.: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia; ; Blank, Vladimir D.: Technological Institute for Superhard and Novel Carbon Materials Moscow, Troitsk, Centralnaya 7a, 108840 Russia;
Keywords
pressure; carbon onions; carbon-oxygen compounds
Abstract

Carbon structures containing oxygen are promising in regard to their industrial application. In this work, we studied coke pitch produced on the basis of melted coal tar pitch mixed with thermally expanded graphite. A mixture of pitch and foamed graphite was fired and then subjected to high pressure in a diamond anvil cell. The obtained samples were studied by Raman spectroscopy, and scanning and trans- mission electron microscopy. Two types of onion-like structures were found: dense and loose structures. It is established that the concentration of oxygen in the loose structures reaches 5 atomic percent

Pages
513–518
Paper at repository of SibFU
http://elib.sfu-kras.ru/handle/2311/71751