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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

含镍硅酸乙酯的Sol-Gel过程制备金属/SiO2复合气凝胶

陈一民; 谢凯; 盘毅; 许静; 赵恂; 肖正泉   

  1. 国防科技大学材料工程与应用化学系; 长沙410073
  • 收稿日期:1997-11-03 修回日期:1997-12-15 出版日期:1998-10-20 网络出版日期:1998-10-20

Prepararion of Ni/SiO2 Composite Aerogel by Sol-Gel Process of Ni-containing Tetraethyl Orthosilicate

CHEN Yi-Min; XIE Kai; PAN Yi; XU Jing; ZHAO Xun; XIAO Zheng-Quan   

  1. Department of Materials Eng. Applied Chemistry; National Universityof Defense Technology Changsha 410075 China
  • Received:1997-11-03 Revised:1997-12-15 Published:1998-10-20 Online:1998-10-20

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摘要： 首次采用含镍硅酸乙酯（NiTEOS）进行溶胶-凝胶反应来制备高镍含量的Ni／SiO2复合气凝胶，且Ni含量可在＜60wt％的范围内任意调节．并系统研究了水浓度、催化剂浓度、溶剂用量及合镍硅酸乙酯的组成对溶胶-凝胶过程的影响．所制备的Ni／SiO2复合气凝胶的比表面积高达420～650m2／g.

关键词: 溶胶-凝胶法, 复合气凝胶, 超临界干燥, 硅酸乙酯, 含镍硅酸乙酯

Abstract: Ni-rich Ni/SiO2 composite aerogels in which weight percentage of Ni could reach 60% werefirstly prepared by sol-gel process of Ni-containing tetraethyl orthosilicate (NiTEOS). The influenceof H2O, catalyst, solvent and compostcomposition of Ni-containing tetraethyl orthosilicate on the sol-gelprocess was discussed. The specific sufrace areas of Ni/SiO2 composite aerogels are in the rangeof 420~650m2/g.

Key words: sol-gel processing, composite aerogel, supercritical drying, Ni-containing TEOS, TEOS

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