This study investigated new sol-gel methods in the fabrication of Al₂O₃ - SiO₂ composite aerogels. Compared to conventional methods, the Al₂O₃ - SiO₂ composite aerogels were prepared and mixed together. Thermal conductivity of the composite aerogels was measured by an instrument, using a transient plane heat source method....
The physical properties, including thermal conductivity, pore structure, and tapped density, of a novel nanoporous silica material. Thermal conductivity was measured, which determined two values of 0.0284 and 0.0294 W/mK. The materials had a high porosity of 95-97%. The lowest density obtained was 0.077g/cm3. High resolution scanning microscopy and nitrogen physisorption were also used as part of the study....
