A novel bulk sol-gel process to prepare monolithic silica materials

Journal of Materials Research volume 14, pages4098–4102(1999)Cite this article

Abstract

A bulk sol-gel process has been developed to prepare monolithic silica materials at room temperature. The process involves an acid-catalyzed hydrolysis of tetraethyl orthosilicate in tetrahydrofuran containing aqueous HC1 catalyst, followed by neutralization with carbonate salts, extraction with aliphatic nonpolar solvents, molding, gelation, and drying. This method shortens the processing time from weeks for the conventional sol-gel process to several days. The silica objects prepared from the process are transparent, crack-free, and of relatively low volume shrinkage (e.g., 52%) and high silica content (e.g., 82%).

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Affiliations

  1. Department of Chemistry, Jilin University, 130023, Changchun, People’s Republic of China

    Ce Wang, Yahong Zhang & Yunfeng Lu

  2. Department of Chemistry, Drexel University, 19104, Philadelphia, Pennsylvania, USA

    Yen Wei

Authors
  1. Ce Wang
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  2. Yahong Zhang
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  3. Yunfeng Lu
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  4. Yen Wei
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Correspondence to Ce Wang.

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Wang, C., Zhang, Y., Lu, Y. et al. A novel bulk sol-gel process to prepare monolithic silica materials. Journal of Materials Research 14, 4098–4102 (1999). https://doi.org/10.1557/JMR.1999.0553

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