Silica aerogels prepared via microwave irradiation using tetraethyl orthosilicate (TEOS) as the precursor are described. The aerogels were obtained after subjecting the entire process under microwave irradiation, significantly reducing the synthesis time to 90 min, which is much shorter than the supercritical CO₂ drying (SCD) method and ambient drying (APD) method. The obtained aerogels under microwave irradiation condition with different power and time exhibit surface areas of 831 m² g⁻¹, average pore sizes of 8.67–12.7 nm, and contact angles of 146.5°. The aerogels are thermally stable and the thermal conductivity is relatively low at 0.028 W m⁻¹ K⁻¹, when the molar ratio of E value (EtOH /TEOS) is 8. The results demonstrate the efficiency of synthesizing silica aerogels via microwave irradiation in the industry.

描述了使用原硅酸四乙酯 (TEOS) 作为前体通过微波辐射制备的二氧化硅气凝胶。气凝胶是在微波照射下进行整个过程后获得的，合成时间显着缩短至 90 分钟，比超临界 CO ₂干燥（SCD）方法和环境干燥（APD）方法短得多。在不同功率和时间的微波辐射条件下获得的气凝胶的表面积为831 m ²  g ^-1，平均孔径为8.67-12.7 nm，接触角为146.5°。当E的摩尔比为0.028 W m ^-1  K ^-1时，气凝胶是热稳定的，热导率相对较低 值 (EtOH /TEOS) 为 8。结果证明了工业中通过微波辐射合成二氧化硅气凝胶的效率。