Formation of Onion-like Structures from Pitch Coke under Pressure

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...

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Bibliographic Details
Published inJournal of Siberian Federal University. Mathematics & Physics Vol. 11; no. 4; pp. 513 - 518
Main Authors Boris A., Kulnitskiy, Valentin D., Churkin, Mikhail Yu, Popov, Anton V., Dmitriev, Igor A., Perezhogin, Leonid A., Ivanov, Vladimir D., Blank
Format Journal Article
LanguageEnglish
Published Krasnoyarsk Siberian Federal University 01.01.2018
Subjects
Carbon
Coal
Coal tar
Coke
Dependence
Diamond anvil cells
Diamonds
Graphite
Heat resistance
Industrial applications
Microscopy
Oxidation
Phase transitions
Pitch (material)
Polymerization
Scanning electron microscopy
Transmission electron microscopy
Russia
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Summary: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 transmission 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.
ISSN:1997-1397
2313-6022
DOI:10.17516/1997-1397-2018-11-4-513-518