A series of silica aerogels and composite materials based on Fe-silicalite-1 nanocrystals embedded into silica aerogel matrix in the form of monoliths and microspheres have been synthesized by drying with supercritical CO₂. Using equivolume water/ethanol mixture as a medium for the aging of monoliths enabled to produce monoliths of silica aerogel and composite without cracks. The synthesis of the composite and silica aerogel microspheres by the emulsion/gelation technique has been designed. The different effects of the stirring rate during the emulsification on the particle size and texture of composites and silica aerogels has been observed. The synthesized samples were characterized by X-ray diffraction, scanning electron microscopy and nitrogen adsorption measurements.

通过超临界CO _2的干燥，合成了一系列基于Fe-silicalite-1纳米晶体的二氧化硅气凝胶和复合材料，这些纳米晶体以整料和微球的形式嵌入到二氧化硅气凝胶基质中。使用等体积的水/乙醇混合物作为单块老化的介质，可以生产二氧化硅气凝胶和复合材料的单块，而不会产生裂纹。设计了通过乳液/胶凝技术合成复合材料和二氧化硅气凝胶微球的方法。观察到乳化过程中搅拌速率对复合材料和二氧化硅气凝胶的粒径和织构的不同影响。通过X射线衍射，扫描电子显微镜和氮吸附测量来表征合成的样品。