Li3N、Mg3N2、Ca3N2催化作用的比较和分析

 Li₃N、Mg₃N₂和Ca₃N₂是高温高压下以hBN为原料合成cBN的催化剂。在实验中发现它们对常压高温下生成hBN的反应也表现出催化作用。对比了三种氮化物催化效果的差异，发现三种氮化物都只有在熔融状态下才能表现出催化效果，以及三种氮化物对生成hBN反应的催化效果与它们在高温高压下合成cBN反应的催化效果次序相似。提出了对合成hBN有催化作用的化合物也将对合成cBN表现出催化作用的观点。

Study on the Catalytic Function of Li3N,Mg3N2,Ca3N2

It is well known that Li 3N,Mg 3N 2 and Ca 3N 2 are catalysts for cBN synthesis under high temperature and high pressure.We discovered that they could also act as catalysts for hBN formation at high temperature and normal pressure.It is confirmed that,from a series comparative experiments, each of them has catalysts effect only on melting condition,the catalytic order for hBN formation is Li 3N>Mg 3N 2>Ca 3N 2,which is similar to that for cBN synthesis.The suggestion that a catalyst for hBN formation may also be a catalyst for cBN synthesis may be reliable.