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Sintering and crystallization of low-density La 2 O 3 -doped Al 2 O 3 aerogels prepared from Al-alkoxide chemically modified with ethyl acetoacetate were investigated. Isothermal sintering experiments showed that the sintering mechanism of Al 2 O 3 aerogels is surface diffusion. The specific surface areas (SSA) of Al 2 O 3 aerogels heat-treated...
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