Synthesis and Characterization of Rice Husk Ash Derived - Silica Aerogel Beads Prepared by Ambient Pressure Drying

Low density silica aerogel beads were synthesized from rice husk ash via sodium silicate route. The gel beads were prepared by the ball dropping method and dried at ambient pressure after surface modification (silylation) with trimethylchlorosilane (TMCS) solution. The characteristics of porous stru...

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Bibliographic Details
Published inKey Engineering Materials Vol. 694; pp. 106 - 110
Main Authors Mat Yajid, Muhamad Azizi, Hamdan, Halimaton, Abdul Halim, Zulhelmi Alif
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 23.05.2016
Subjects
Ashes
Beads
Fourier transforms
Infrared spectroscopy
Nitrogen
Pressure
Silica aerogels
Surface chemistry
Silica Aerogel Beads
Rice Husk Ash
Ambient Pressure Drying
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Summary:Low density silica aerogel beads were synthesized from rice husk ash via sodium silicate route. The gel beads were prepared by the ball dropping method and dried at ambient pressure after surface modification (silylation) with trimethylchlorosilane (TMCS) solution. The characteristics of porous structure of silica aerogel beads were measured by Brunauer-Emmett-Teller (BET) nitrogen adsorption and desorption method. The silica aerogel beads showed a specific surface area as high as 773 m2/g. They also displayed water-repellant effect (hydrophobic) due to silylation as revealed by Fourier transform infrared spectroscopy (FTIR).
Bibliography:Selected, peer reviewed papers from the 24th Scientific Conference of the Microscopy Society Malaysia (SCMSM 2015), December 2-4, 2015, Malacca, Malaysia
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ISBN:3035710198
9783035710199
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.694.106