无催化剂高纯度纳米二氧化硅粉的制备  

Preparation of Catalyst-free High Purity Nano-silica Powder

作　　者：杨恺[1] 安茂忠[1] 杨春晖[1] 张磊[1] 胡成发[2] 葛士彬[1] 

机构地区：[1]哈尔滨工业大学化工学院,哈尔滨150001 [2]常州大学石油化工学院,常州213164

出　　处：《人工晶体学报》2011年第5期1167-1173,共7页Journal of Synthetic Crystals

基　　金：国家"十一五"科技部"863"科技支撑计划项目(2006BAE01B09)

摘　　要：以四乙氧基硅烷(TEOS)为前驱体,通过微波辐照冰水浴TEOS-水-乙醇体系制备硅溶胶,用超声振荡法分散溶胶,在管式炉中烧制高纯度纳米二氧化硅粉体。采用烷氧基硅烷法制备TEOS,不加入酸碱催化剂,在10～30min内制取高纯度硅溶胶,溶胶总金属杂质含量低于300×10-6 mg/L。硅溶胶制备效率高,粒度均匀。用TEM、SEM、EDS、XRD、ICP-MS、FTIR、粒度分布检测仪器和Raman spectrum对实验结果进行了表征和分析。High purity nano-silica sol was prepared using tetraethoxysilane（TEOS）-water-alcohol system catalyzed with microwave irradiation,and then high purity nano-silica powder prepared using the silica sol by ultrasonic vibration and high temperature sintering furnace.Reaction of alkoxysilane generate to TEOS.A high purity free-catalyst silica sol was obtained in less than 30 min,and total metal impurities of silica sol are not more than 300×10-6 mg/L.Furthermore,the products were characterized using a transmission electron microscope,a scanning electron microscope,Energy Dispersive Spectrometer,X-ray diffraction,and an inductively coupled plasma mass spectrometer,Fourier Transform infrared spectroscopy,Zetasizer 3000HS and FT-Raman Spectrometer.

关 键 词：微波辐照 超声波 高纯度 二氧化硅粉体 

分 类 号：TQ127.2[化学工程—无机化工]