Non-metallic catalysts for diamond synthesis under high pressure and high temperature

Autor:	Jun Zhang, Qi Wu, Daoyang Dai, Wenkui Wang, Zhicheng Qin, Liling Sun
Rok vydání:	1999
Předmět:	General Mathematics Diamond chemistry.chemical_element Nanotechnology Activation energy engineering.material Catalysis Metal Chemical engineering chemistry High pressure visual_art engineering visual_art.visual_art_medium Rectangular potential barrier Graphite Carbon Mathematics
Zdroj:	Science in China Series A: Mathematics. 42:834-841
ISSN:	1862-2763 1006-9283
Popis:	Recent results on conversion from graphite to diamond by aid of non-metallic catalysts are reviewed. The current status of experimental advances is presented and typical examples from relevant literature are provided for understanding the mechanism of the graphite-diamond conversion by aid of these non-metallic catalysts. Furthermore, a tendency of graphite-diamond transformation assisted by carbonates, sulfates or phosphorus under high pressure and high temperature has been investigated by calculating the activation energy and transformation probability of the carbon atoms over a potential barrier. It was found that the activation energy is highly sensitive to the catalyst chosen. The probability sequence of graphite-diamond transformation with these catalysts was put forward.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d60ea0caf2c6c8681a406f52359b9102 https://doi.org/10.1007/bf02884270 Zobrazit plný text záznamu Full text from SpringerLink