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Influence of aging conditions on textural properties of water-glass-based silica aerogels prepared at ambient pressure

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dc.contributor.author Sarawade, Pradip Bhikaji
dc.contributor.author Kim, Jong-Kil
dc.contributor.author Hilonga, Askwar
dc.contributor.author Kim, Hee Taik
dc.date.accessioned 2019-12-10T12:43:02Z
dc.date.available 2019-12-10T12:43:02Z
dc.date.issued 2010-06-04
dc.identifier.uri https://doi.org/10.1007/s11814-010-0173-z
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/521
dc.description Research Article published by Springer US en_US
dc.description.abstract The experimental results of aging time and temperature on the textural properties of water-glass (sodium silicate)-based silica aerogels are reported and discussed. Aging of the hydrogel for different times and temperatures led to an ability to increase the stiffness and strength of the networks. These improvements enabled the gel to withstand ambient pressure drying (APD) and, consequently, preserve the highly porous silica network without collapse. The pore size and volume increased with increasing aging temperature and time, while the specific surface area decreased. Monolithic aerogels with extremely low bulk density (~0.069 g/cm3), high specific surface area (820 m2g−1), large cumulative pore volume (3.8 cm3g−1), and high porosity (~96%) were obtained by aging at 60 oC for 18 hours. Therefore, easy synthesis of monolithic silica aerogels at ambient pressure is achievable using a relatively inexpensive silica precursor (sodium silicate). en_US
dc.language.iso en en_US
dc.publisher Springer US en_US
dc.subject Silica Aerogels en_US
dc.subject Sodium Silicate en_US
dc.subject Ambient Pressure en_US
dc.title Influence of aging conditions on textural properties of water-glass-based silica aerogels prepared at ambient pressure en_US
dc.type Article en_US


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