中文摘要：

引言无机柱撑黏土作为一种新型类分子筛多孔固体复合材料,引起人们的极大兴趣。通过客体物质（柱化剂）对层状黏土进行插层柱撑,可形成层间柱子氧化物活性中心,还可调控黏土的孔结构、表面酸性和催化性能等。可与黏土反应的无机物主要有无机阳离子、阴离子和无机聚合羟基金属离子。黏土与无机聚合物之间的作用存在多种复杂的物理化学过程,如离子交换、黏土边缘断键的表面吸附作用、

英文摘要：

Pillared clays （Ti-PILCs） were synthesized from Na-type montmorillonite through intercalation with polymeric hydroxy-titanium. The mechanism of the pillaring course was studied by means of magic angle spinning nuclear magnetic resonance （MAS NMR） and diffuse reflectance infrared spectroscopy （DRIFTS） techniques. DRIFTS suggested that after Ti-pillaring, the silicon-oxygen tetrahedral Si--O--Si bond and aluminum oxide octahedral Si--O- Al bond were broken. Meanwhile, NMR also showed the change of the silicon oxygen tetrahedral structure and aluminum oxide octahedral structure in the pillared clay. In the pillaring process, the titanium hydroxy oligomeric cations entered the layers of the montmorillonite by ion exchange, the Si--O -Al bond of the raw clays were broken, the silicon-oxygen tetrahedron structure were overturned, and the reactive oxygen species （structural hydroxyl） reacted with titanium hydroxy-oligomeric cations to form Si--O--M bond. This led to the incorporation of pillaring species of Ti in the layers of the clay. After further heat treatment, the TiO2 pillars were formed in the layers to obtain Ti-PILCs.