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过程工程学报 ›› 2016, Vol. 16 ›› Issue (5): 870-875.DOI: 10.12034/j.issn.1009-606X.216159

• 材料工程专栏 • 上一篇    下一篇

硼砂与尿素在N2气氛下合成六方氮化硼的工艺

赵凯1,孙苒荻2,朱高远2,张红玲2,张炳烛1,徐红彬3,张懿4   

  1. 1. 河北科技大学化学与制药工程学院
    2. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室
    3. 中国科学院过程工程研究所绿色过程与工程重点实验室
    4. 中国科学院过程工程研究所
  • 收稿日期:2016-03-22 修回日期:2016-05-16 出版日期:2016-10-20 发布日期:2016-10-14
  • 通讯作者: 孙苒荻 rdsun@ipe.ac.cn

Synthesis of h-BN Particles with Borax and Urea under N2 Atmosphere

ZHAO Kai 1,SUN Ran-di 2,ZHU Gao-yuan 2,ZHANG Hong-ling 2,ZHANG Bing-zhu 1,XU Hong-bin 3,WANG Shao-na 3   

  1. 1. College of Chemical and Pharmaceutical Engineering，Hebei University of Science and Technology
    2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology，Institute of Process Engineering，Chinese Academy of Sciences
    3. Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2016-03-22 Revised:2016-05-16 Online:2016-10-20 Published:2016-10-14
  • Contact: SUN Ran-di rdsun@ipe.ac.cn

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摘要： 以硼砂、尿素为原料，采用改进的硼砂?尿素法，在N2气氛下合成六方氮化硼(h-BN)，考察了焙烧温度、保温时间、硼砂与尿素摩尔比对氮化硼产率、纯度及形貌的影响，对产品进行了表征. 结果表明，合成六方氮化硼的最佳工艺条件为：硼砂/尿素摩尔比1:4、焙烧温度1300℃、保温时间4 h. 该条件下氮化硼产率约为47%，纯度达98%，单片直径300~500 nm，粒度约为4 ?m，比表面积约为13 m2/g.

关键词: 硼砂, 尿素, 六方氮化硼, 工艺, 表征

Abstract: Hexagonal boron nitride (h-BN) was prepared under N2 atmosphere using improved borax?urea method. The effects of roasting temperature, soaking time, molar ratio of borax to urea on h-BN yield, purity and morphology were studied. Samples prepared under different conditions were analyzed. The results indicated that the optimum technological conditions for the synthesis of h-BN were roasting temperature of 1300℃, keeping time of 2~4 h, molar ratio of borax to urea of 1:4. Under the above conditions, the yield of h-BN was about 47% and the purity reached 98%. Moreover, the h-BN product with a particle size of 3.90 ?m composed of single particle diameter of 300~500 nm and BET specific surface area of 13 m2/g were obtained.

Key words: borax, urea, hexagonal boron nitride, technique, characterization

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