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

dc.contributor.authorSarawade, Pradip Bhikaji
dc.contributor.authorKim, Jong-Kil
dc.contributor.authorHilonga, Askwar
dc.contributor.authorKim, Hee Taik
dc.date.accessioned2019-12-10T12:43:02Z
dc.date.available2019-12-10T12:43:02Z
dc.date.issued2010-06-04
dc.descriptionSDG 9 – Industry, Innovation and Infrastructure SDG 12 – Responsible Consumption and Production SDG 7 – Affordable and Clean Energyen_US
dc.description.abstractThe 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.identifier.urihttps://doi.org/10.1007/s11814-010-0173-z
dc.identifier.urihttp://dspace.nm-aist.ac.tz/handle/123456789/521
dc.language.isoenen_US
dc.publisherSpringer USen_US
dc.subjectSilica Aerogelsen_US
dc.subjectSodium Silicateen_US
dc.subjectAmbient Pressureen_US
dc.titleInfluence of aging conditions on textural properties of water-glass-based silica aerogels prepared at ambient pressureen_US
dc.typeArticleen_US

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