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

被引：0

作者：

孙力玲

吴奇

戴道扬

张君

秦志成

王文魁

机构：

来源：

Science China Mathematics | 1999年 / 08期

基金：

中国国家自然科学基金;

关键词：

non-metallic catalyst; diamond synthesis; transformation probability; high pressure and high temperature;

D O I：

暂无

中图分类号：

O643.3 [催化];

学科分类号：

081705 ;

摘要：

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.

引用

页码：834 / 841

页数：8