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The preparation of novel silica gel hollow tubes**

Authors

  • Dr. Hidenori Nakamura,

    1. Central Research Lahorator Showra Uenko K. K. 1-1. Ohnodai 1-chomc. Midori-ku. Chiha 26- (Japan)
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  • Dr. Yasushi Matsui

    Corresponding author
    1. Central Research Lahorator Showra Uenko K. K. 1-1. Ohnodai 1-chomc. Midori-ku. Chiha 26- (Japan)
    • Central Research Lahorator Showra Uenko K. K. 1-1. Ohnodai 1-chomc. Midori-ku. Chiha 26- (Japan)
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  • **

    We Sincerely thank out colleagues K. Takahashi and Y. Miyasaka For Performing the electon mircroscopy.

Abstract

Work-like silica gel hollow tubes have been prepared using a sol-gel method. The tubes (see Figure), wich are porous, mostly have one end closed, although occasionally tubes with both ends closed are produced. The preparation method, which involves the hdyrolysis of tetraethylorothosilicate in a mixture of ethanol, ammonia, water and citric acid monohydrate, is described

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