Paper Title:
Inorganic Aerogel Granules Dried at Atmospheric-Pressure
  Abstract

Silica aerogels using sodium silicates was synthesized by atmospheric-pressure drying. Granulation of silica aerogels was carried out in sequence of hydrogel formation, aging, surface modification, and drying. Rapidly prepared aerogels showed good properties in case aging and surface modification was done within 1 day. Drying is critical to aerogel granulation and the BET area of aerogel dried for a short duration had decreasing with time. It is suggested that sodium silicate-based aerogels granulation could be prepared within less than 5 days, half of initial processing. Aerogel granules had the average diameter of 1 mm and nearly spherical shape. It has very low thermal conductivity of 0.010 W/m⋅K, very light-weight and nanoporous structure with a porosity of upto 95%.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
675-678
DOI
10.4028/www.scientific.net/SSP.124-126.675
Citation
J. G. Yeo, J. M. Hong, C. H. Cho, S. D. Bhagat, Y. H. Kim, Y. S. Ahn, "Inorganic Aerogel Granules Dried at Atmospheric-Pressure", Solid State Phenomena, Vols. 124-126, pp. 675-678, 2007
Online since
June 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Seung Hun Lee, Eun A Lee, Hae Jin Hwang, Ji Woong Moon, In Sub Han, Sang Kuk Woo
Abstract:Hydrophobic silica aerogels were synthesized by an ambient pressure drying method from silicic acid with a different pH value, which was...
910
Authors: Chang Yeoul Kim, Jong Kyu Lee, Byung Ik Kim
Abstract:Aerogel has its advantages of light density of 0.003-0.35 g/cm3 and its high specific surface area, 600-1000m2/g, mean pore diameter ~20nm....
673
Authors: Hae Jin Hwang, Chul Eui Kim, Young Chul Cha
Abstract:In order to prevent the irreversible collapse of the silica aerogel backbone upon the drying of the liquid phase of silica wet gel derived...
1053
Authors: In Sub Han, Jong Chul Park, Se Young Kim, Ki Seog Hong
Abstract:Silica wet gels were prepared from water glass (29 wt.% SiO2) by using Amberlite as a ion exchange resin. After washing in distilled water,...
790
Authors: Jing Xiao Liu, Lu Nan Bai, Fei Shi, Zhi Qiang Hu, Yan Yan Jiang, Ting Zhao
Chapter 1: Material Engineering and its Application Technology
Abstract:In this paper, TiO2-SiO2 composite aerogels were prepared via ambient pressure drying by sol-gel and sol...
101