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Abstract

Since the gels prepared via solution processes inherently retain porosity, porous glasses are generally obtained as intermediate products to final full-dense glasses[1]. In order to avoid undesired deformation and fracture on drying, various efforts have been made to control the drying behavior of wet gels through the precise control of their pore size distribution. Shoup [2] demonstrated the formation of meso- to macroporous alkali silicate gels which can be dried without fracture and sintered into full dense silica glass after vigorous washing. For more general alkoxy-derived gels, Hench et al. [3] established a process to enlarge the median pore size of silica by immersing gels into aqueous ammonium hydroxide solutions.

Keywords

Pore Size Distribution Porous Glass Monolithic Column Ammonium Hydroxide Solution Median Pore Size 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • K. Nakanishi

There are no affiliations available

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