Nanocomposite aerogels: The SiO_2–Al_2O_3 system
Nanocomposite aerogels: The SiO_2–Al_2O_3 system
复制标题
纳米复合气凝胶:SiO_2–Al_2O_3 体系
DOI:
10.1557/jmr.1993.3163
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发表时间:
1993
影响因子:
2.7
通讯作者:
E. Breval
中科院分区:
文献类型:
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作者:
S. Komarneni;R. Roy;U. Selvaraj;P. Malla;E. Breval
Monolithic nanocomposite aerogels of two aluminosilicate compositions have been prepared and characterized by different techniques. The results show that high surface area and mesoporosity can be preserved in the above nanocomposite aerogels by heating at 1000 °C, unlike the single component aerogels. The presence of alumina as a second phase prevented their densification which resulted in surface areas on the order of 500–600 m^2/g and mesopores of about 5–6 nm in diameter after heat treatment at 1000 °C. These novel nanocomposite aerogels are expected to find applications at high-temperatures in separations, insulation, catalysis, etc.
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