化工学报 ›› 2021, Vol. 72 ›› Issue (2): 1156-1168.DOI: 10.11949/0438-1157.20200905

• 材料化学工程与纳米技术 • 上一篇    下一篇

铝源孔容和焙烧升温过程对碳热还原法制备氮化铝粉体的影响

魏娟(),王玉军(),骆广生   

  1. 清华大学化学工程系,化学工程联合国家重点实验室,北京 100084
  • 收稿日期:2020-07-06 修回日期:2020-08-27 出版日期:2021-02-05 发布日期:2021-02-05
  • 通讯作者: 王玉军
  • 作者简介:魏娟(1995—),女,硕士,wei-j17@tsinghua.org.cn
  • 基金资助:
    国家自然科学基金项目(21878169)

Influence of pore volume and heating process on preparation of aluminum nitride powder by carbothermal reduction method

WEI Juan(),WANG Yujun(),LUO Guangsheng   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2020-07-06 Revised:2020-08-27 Online:2021-02-05 Published:2021-02-05
  • Contact: WANG Yujun

摘要:

碳热还原氮化法是大规模制备高纯度氮化铝(AlN)粉体的主要方法,通过微反应器制备不同孔容的铝源,系统探究了前体孔容和微观形貌对AlN粉体产物的影响,并通过动力学模拟验证了筛选出的前体的活性。同时对氮化反应升温过程的影响也做了探究,最终通过对前体和焙烧升温过程的优化,得到纯度99%以上的AlN粉体,其平均粒径约为150 nm,O元素含量为0.55%。

关键词: 氮化铝, 碳热还原, 铝源孔容, 粉体技术, 微反应器, 制备

Abstract:

Carbothermal reduction nitriding method is the main method for industrial preparation of high-purity aluminum nitrite (AlN) powder. In this paper, the aluminum sources with different pore volumes were synthesized through a micro-reactor, and the influence of the pore volume and micro-morphology of the precursor on the AlN powder was systematically investigated, and the activity of the selected precursor was verified by kinetic simulation. At the same time, the influence of the heating process of the nitriding reaction was also explored. Finally, through optimizing the aluminum source and heating process, the AlN powder with a purity of more than 99% was obtained, with an average particle size of about 150 nm and element O content of 0.55%.

Key words: aluminum nitride, carbothermal reduction, aluminum source pore volume, powder technology, microreactor, preparation

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