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Preparation of SiO_2 Aerogels with Sol-Gel Method and the study of Their Properties

Shen Jun; Wang Jue; Gan Lihua; Chen Longwu (Pohl Institute of Solid State Physics, Tongji University Shanghai 200092 China)(Chemistry Department, Tongji University Shanghai 200092 China)  
Nano-porous material SiO2 aerogels were prepared from TEOS through sol-gel process and super critical drying technique. The effects of the amount of solvent used and the pH value of solution on the gelling process and the structure of the aerogels were studied. BET, XRD, SEM and some other experiment methods were used to investigate the structure and other physical properties of these aerogels.
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