CJCU

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (3): 519.

• Preface • Previous Articles     Next Articles

Preparation of Mono-component Silica Monolith via the Improved Bulk Sol-gel Process

LIU Wei1, ZHANG Ya-Hong2, GUO Na1, ZHAO Yi-Yang1, HAO Xiu-Feng1, ZHANG Wan-Jin1, WANG Ce {1}1, WEI Yen3   

  1. 1. Alan G. Macdiarmid Laboratory, Jilin University, Changchun 130023, China;
    2. Department of Chemistry, Fudan University, Shanghai 200433, China;
    3. Department of Chemistry, Drexel University, Philadelphia 19104, USA
  • Received:2002-09-20 Online:2003-03-24 Published:2003-03-24

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Abstract: An improved bulk sol-gel process was found to prepare transparent, non-cracking, highly pure and mono-component monolithic silica gels with a low volume shrinkage. HSi(OC2H5)3 was used as a gel acceleration to shorten the whole sol-gel processing time in the place of the carbonate powders in bulk sol-gel process. The mono-component silica gel monoliths prepared via the improved bulk sol-gel process possess a microporous structure and a good transmittance in the UV-Vis region, and the mass fraction of silica is 89%, the mass fraction of small molecules is 11%.

Key words: Mono-component bulk sol-gel process, Gel accelerator, Silica monoliths

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