Synthesis of SiO2 Aerogel via Ambient Pressure Drying ...
modification is the key and important process in the preparation of ambient pressure dried silica aerogels [2]. Fig. 4. FTIR spectra of a. Perlite and b. SiO 2 aerogel powder 3.3. XRD analysis Fig. 5 shows XRD profiles of the silica aerogel and perlite powder. Both perlite powder and silica aerojel powder have amorphous structure.
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