溶胶—凝胶法合成氧化铝—氧化硅纳米粉

Synthesis of Alumina-silicon Dioxide Nanopowders via Sol-gel Process

以AlCl3·6H2 O和 (CH2 ) 6 N4 为原料 ,用溶胶—凝胶法合成出比表面积为 189. 6m2 /g的γ相氧化铝粉 ,平均粒径约为 9nm。以铝溶胶和硅溶胶为原料 ,用溶胶—凝胶法合成出反应活性高的Al2 O3-SiO2 复合粉体。该粉体在 13 0

Al 2O 3 nanopowder whose specific surface area and average particle diameter is 189.6m 2/g and about 9nm, respectively, is synthesized via sol gel process using AlCl 3·6H 2O and (CH 2) 6N 4 as starting materials. Active Al 2O 3-SiO 2 composite powder is synthesized via diphasic sol gel process using SiO 2 and Al 2O 3 sol. After having been calcined at 1300℃ for an hour, Al 2O 3-SiO 2 composite powders transforms to mullite.