Preparation of SiO2 Aerogel by Rice Husk

Journal of Inorganic Materials

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Preparation of SiO₂ Aerogel by Rice Husk

HOU Gui-Hua

Center of Physical Testing and Chemical Analysis; Yancheng Institute of Technology; Yancheng 224003; China

Received:2002-11-21 Revised:2002-11-29 Published:2003-03-20 Online:2003-03-20

Abstract

Abstract: A SiO₂ aerogel was prepared with rice husk, being cooked in boiling solution of diluent hydrochloric acid, then dried, and then pyrolyzed. The results show that the SiO₂ mass content in aerogel is 99.99%, the average particle size is 20.77μm, and the specific surface area is 251m²/g determined by ICP-AES, particle size analyzer and surface area & pore size analyzer respectively. The structure transformation of rice husk during the aerogel preparation was investigated by XRD, IR and SEM.

Key words: rice husk, SiO₂ aerogel, pyrolysate, preparation

CLC Number:

TM285

HOU Gui-Hua. Preparation of SiO₂ Aerogel by Rice Husk[J]. Journal of Inorganic Materials.

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Preparation of SiO₂ Aerogel by Rice Husk

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