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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

沉淀法合成高比表面积超细SiO2

王子忱; 王莉玮; 赵敬哲; 杨广丽; 杨烨; 赵慕愚   

  1. 吉林大学化学系; 长春130023
  • 收稿日期:1996-03-25 修回日期:1996-06-17 出版日期:1997-06-20 网络出版日期:1997-06-20

Preparation of Ultrafine SiO2 Powders with Large Specific Surface Area

WANG Zichen; WANG Liwei; ZHAO Jingzhe; YANG Guangli; YANG Hua; ZHAO Muyu   

  1. Department of Chemistry; Jilin University Changchun 130023 China
  • Received:1996-03-25 Revised:1996-06-17 Published:1997-06-20 Online:1997-06-20

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摘要： 以水玻璃和盐酸为原料，采用化学沉淀法制备出多孔型、高比表面积、超细SiO2，用BET、XRD、SEM、DTA－TGA等手段对其性能进行了表征，结果表明，所制得的多孔型SiO2比表面积可达1000m2／g以上，孔分布均匀（25A右）．粒径小，具有许多特殊的性能．

关键词: 沉淀法合成, 高比表面积, 多孔型, SiO2

Abstract: Ultrafine SiO2 powders are prepared from water-glass and HCl through the process of addingsurfactant. The specific surface area of the powders was more than 1000m2/g, and their particlesize was about 0.1μm. The effects of the amount of surfactant and the concentration of reactantson the properties of products were studied. BET, XRD, TEM and some other experiment methodswere used to investigate the structure and other physical propertics of the sample.

Key words: SiO2 preparation, large specific surface area