东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (5): 705-708.DOI: -

• 论著 • 上一篇    下一篇

超微二氧化硅的超声制备及影响因素分析

申晓毅;刘岩;翟玉春;顾惠敏;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-05-15 发布日期:2013-06-22
  • 通讯作者: Shen, X.-Y.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007CB613603)

Ultrasonic preparation of ultrafine silica and analysis of influencing factors

Shen, Xiao-Yi (1); Liu, Yan (1); Zhai, Yu-Chun (1); Gu, Hui-Min (1)   

  1. (1) School of materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-05-15 Published:2013-06-22
  • Contact: Shen, X.-Y.
  • About author:-
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摘要： 采用溶胶-凝胶法,在醇水氨体系中利用超声波工艺制备超微二氧化硅粉体,其中氨作为反应的催化剂;利用XRD,SEM和IR对制备的样品进行表征.测试结果表明,样品二氧化硅为非晶态球形颗粒,粒度均匀,外形规则,且样品中含有大量羟基.通过单因素实验考察超声波功率、反应温度、反应物摩尔比和氨水质量浓度对样品形貌和粒度的影响,结果表明,超声波功率对样品粒度的影响最大,反应物摩尔配比次之,氨水浓度影响也很可观.

关键词: 溶胶-凝胶法, 超声波工艺, 超微二氧化硅, 非晶态, 超声制备

Abstract: The ultrafine silica powder was prepared ultrasonically using sol-gel method in 2-propanol-H2O-NH3 system, where the ammonia acts as the catalyst during reaction. The ultrafine silica powder sample was characterized by SEM, XRD and IR, and the results indicated that the SiO2 particles thus prepared are amorphous in regularly spheric shape with uniform size and contain lots of hydroxides. The influences of ultrasonic power, reaction temperature, mole mixture ratio of reactants and concentration of ammonia solution on sample's morphology and particle size were studied through some single-factor experiments, and the results revealed that the ultrasonic power affects particle size greatest with the mole mixture ratio of reactants as the next. Besides them, the influence of the concentration of ammonia solution is also considerable.

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