用自组装技术合成了以通过溶胶-凝胶法得到的纳米ZrO2包覆的SiO2粒子,并研究了其作为固体超强酸的催化性能. 样品采用TG-DTA, SEM, EDS, XPS 和XRD 进行了表征. 结果表明: SiO2粒子表面的纳米ZrO2 具有较好的均匀性和致密性, ZrO2 的含量随覆盖层的增加而增多, 纳米ZrO2 具有四方相结构;SO2-4-ZrO2/SiO2固体超强酸具有较好的催化性及重复使用性.
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