Mg3N2在生成hBN反应中的催化作用

人工晶体学报, 2001, 30(1): 89-92. doi: 10.3969/j.issn.1000-985X.2001.01.015

Mg3N2在生成hBN反应中的催化作用

徐晓伟 ^1, , 刘志甫 ^2, , 赵红梅 ^3, , 李玉萍 ^4,

1.北京科技大学无机非金属材料系,

2.北京科技大学无机非金属材料系,

3.北京科技大学无机非金属材料系,

4.北京科技大学无机非金属材料系,

基金项目: 国家自然科学基金(59972003)

关键词：氮化镁 , 氮化硼 , 催化剂

Catalytic Function of Mg3N2 in the Formation of hBN

研究了Mg3N2在B4C和NH4Cl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B4C反应不生成hBN；B4C与NH4Cl反应生成少量hBN；在B4C和NH4Cl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 Mg3N2 in the reaction between B4C and NH4Cl has been investigated under normal pressure and high temperature.Results of FTIR and XRD analysis indicated that under 950℃and N2 condition,no hBN was obtained from Mg3N2-B4C reaction and only small amount of hBN was found in the product of B4C-NH4Cl system，while large amount of hBN was achieved from the product of B4C-NH4Cl-Mg3N2 system.The catalytic function of Mg3N2 is proposed from these reactions.

参考文献

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