以经提纯精制的高纯钠基蒙脱石为基质,钛酸正丁酯为钛源,采用溶胶-凝胶法制备了钛交联蒙脱石复合材料,并对其进行焙烧处理.再利用X射线衍射、比表面积-孔径分布、扫描电镜和透射电镜等分析手段,对材料进行结构性能表征.X射线衍射和比表面积-孔径分布结果表明:经交联柱撑后,材料的层间距d001值和比表面积均大幅增加,分别由钠基蒙脱石的1.26nm和31.6m2/g增加至钛交联蒙脱石的3.65nm和409.1 m2/g.扫描电镜和透射电镜分析显示:钛交联柱撑后蒙脱石颗粒粒度变小,内部孔洞增多,且经焙烧处理后,交联柱子TiO2均匀地分布在钛 交联蒙脱石材料的层间,层与柱子间按Ti-O-Si键紧密结合在一起形成孔径及柱子均匀分布的高热稳定性复合材料.%A Ti-pillared montmorillonite composite (Ti-PILMs) had been synthesized through the sol-gel process with the purified ultrapure Namontmorillonite matrix and Ti(n-C4H9O)4 as titanium source, and then was roasted carefully. The composition, structure and properties of the Ti-PILMs were studied by X-ray diffraction (XRD), nitrogen adsorption desorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results of XRD and specific surface area measurement showed that the interlayer free spacing and specific surface area of Ti-PILMs increased largely after pillared, and the value of d(001) and specific surface area increased from 1.26 nm and 31.6 m2/g of sodium montmorillonite to 3.65 nm and 409.1 m2/g of Ti-PILMs at most. The SEM and TEM results verified that the particle size diminished and inter-pores increased after pillared. After roasted disposal, crossing linking pillar TiO2 distributed evenly in the layers of Ti-PILMs, and the layers and the pillar presses unified closely with Ti-O-Si bond was formed the aperture and the pillar uniform distribution high heat stability compound materials.
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