对Sn(Sb)O2干凝胶的结构进行了试验及模拟研究,通过BET-N2吸附及XRD分析,详细研究了SnO2凝胶在200～600 ℃干燥过程中凝胶骨架纳米结构及其变化规律,并研究了掺杂元素Sb对纳米结构演变的影响.研究发现:SnO2干凝胶为1～10 nm的纳米多孔结构,其结构特征符合圆柱体通孔模型;随着固化温度的升高,凝胶骨架粗化,但结构特征相似性不变,孔体积率也基本不变;Sb的增加有细化骨架的作用.
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