探索了以冰晶体为模板制备钠基蒙脱石质(Na-MMT)介孔材料的可行性. 当蒙脱石(MMT)微凝胶分散液的浓度控制在1.8%~2.1%范围, MMT微粒在0.15~0.60μm之间时, 冻干后的MMT微粒呈层状分布, 且具有宏观层状组装纹理. MMT多孔结构体系中存在着介孔结构, 介孔孔径主要分布在35~45nm, 介孔孔隙呈现出楔形特征. 其晶胞层间距d(001)由1.238nm 增至1.901nm, 比表面积由原始的16.5m2/g增至213.6m2/g.
Mesoporous sodium montmorillonite (Na-MMT) was made with ice template. The experimental results show that its mesoporous diameter are mainly distributed between 35nm and 45nm, its shapes are wedgy under controling the microgel concentration of Na-MMT from 1.8% to 2.1% and its particle sizes is in the rang of 0.15-0.6μm. The macro-morphology of microgel Na-MMT prepared by frozen drying are parallel assemble regularly. Na-MMT possesses the numerous maroporous and mesoporous characteristics in its interlayer simultaneously. The d(001) distance of the Na-MMT increases from 1.238 nm to 1.901 nm, and the surface area increases from 16.5m2/g to 213.6m2/g.
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