Mg_3N_2 在生成hBN反应中的催化作用  

Catalytic Function of Mg_3N_2 in the Formation of hBN

作　　者：徐晓伟[1] 刘志甫[1] 赵红梅[1] 李玉萍[1] 

机构地区：[1]北京科技大学无机非金属材料系,北京100083

出　　处：《人工晶体学报》2001年第1期89-92,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金!资助项目 (No.5 9972 0 0 3)

摘　　要：研究了Mg3N2 在B4 C和NH4 Cl于常压高温下生成hBN反应中的作用。用红外光谱仪和X射线衍射仪对反应产物进行分析 ,实验结果表明 :在 950℃和N2 气环境下 ,Mg3N2 与B4 C反应不生成hBN ;B4 C与NH4 Cl反应生成少量hBN ;在B4 C和NH4 Cl中加入Mg3N2 后hBN的生成量明显增加。说明高温高压下合成cBN的常用催化剂Mg3N2 ,在常压高温生成hBN的反应中也表现出催化作用。The function of Mg 3N 2 in the reaction between B 4C and NH 4Cl has been investigated under normal pressure and high temperature.Results of FTIR and XRD analysis indicated that under 950℃and N 2 condition,no hBN was obtained from Mg 3N 2 B 4C reaction and only small amount of hBN was found in the product of B 4C NH 4Cl system,while large amount of hBN was achieved from the product of B 4C NH 4Cl Mg 3N 2 system.The catalytic function of Mg 3N 2 is proposed from these reactions.

关 键 词：氮化镁 立方氮化硼 催化剂 催化作用 CBN 

分 类 号：O613.81[理学—无机化学]