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
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.
赵凯 孙苒荻 朱高远 张红玲 张炳烛 徐红彬 张懿. 硼砂与尿素在N2气氛下合成六方氮化硼的工艺[J]. 过程工程学报, 2016, 16(5): 870-875.
ZHAO Kai SUN Ran-di ZHU Gao-yuan ZHANG Hong-ling ZHANG Bing-zhu XU Hong-bin WANG Shao-na. Synthesis of h-BN Particles with Borax and Urea under N2 Atmosphere. Chin. J. Process Eng., 2016, 16(5): 870-875.
2016, Vol. 16 
