TY - JOUR
AU1 - Wei, Jian
AU2 - Zhu, Pinghua
AU3 - Sun, Hao
AB - In this paper, we report a new and convenient method for the synthesis of insulating aerogel by recycling solid waste coal gangue, which can reduce the industrial production cost of silica aerogels and realize high value-added utilization of solid waste. Sodium silicate was prepared from a cheap industrial waste coal gangue as the precursor for silica aerogels, which was used for silica wet gel preparation by a one pot method; this method of solvent exchange/surface modification was carried out quickly by mechanical stirring process, and the wet gels derived from coal gangue were dried under ambient pressure condition. A high surface area (~748 m2/g) nanostructured aerogel with a 3D open porous microstructure was synthesized, which exhibits a low density (~0.18 g/cm3) and a superior thermal insulation performance (~0.033 W·m−1·K−1). More significantly, the synthetic yield of silica aerogel powder by recycling coal gangue can reach 92%.
TI - Ambient-Dried Silica Aerogel Powders Derived from Coal Gangue by Using One-Pot Method
JF - Materials
DO - 10.3390/ma15041454
DA - 2022-02-15
UR - https://www.deepdyve.com/lp/multidisciplinary-digital-publishing-institute/ambient-dried-silica-aerogel-powders-derived-from-coal-gangue-by-using-fEGg6Fvrik
SP - 1454
VL - 15
IS - 4
DP - DeepDyve
ER -