锆基柱撑蒙脱石矿物材料的研究

Research on Zr-pillared Montmorillonite Mineral Material

以氧氯化锆（zrOCl2·8H2O）为柱化剂的锆源，河南信阳的蒙脱石为基质粘土，制备锆基柱撑蒙脱石矿物材料，通过XRD、FTIR、TG-DSC、SEM和BET等手段对其进行表征。锆基柱撑蒙脱石的层间域d001为1．9～2．2nm，热稳定性达到500℃以上；柱撑蒙脱石中的[SiO4]四面体层和锆聚合阳离子形成了稳定的[Si-O]…[H（O）-Zr]键，结构破坏的吸热率为1625J／g（蒙脱石为44J／g）；比表面积是蒙脱石的2倍，揭示锆基柱撑蒙脱石具有较高的热稳定性和较好的表面活性。预示在环保领域有更好的应用前景。

Using ZrOCl2·8H2O as agent and montmorillonit （Henan Xinying） as host material, the Zr-pillared montmorillonite was prepared. The result of pillar structure, thermal stability and surface activity of Zr-pillared montmorillonite tested with XRD, FTIR, TG-DSC, SEM and BET showed that d001 = 1.9-2.2 nm, the thermal stability can be up to 500 ℃ Zr- polycations exchanged interlayer cations of montmorillonite and influenced transmittance of Si-O bond libratio. The stable [Si-O]…[H（O）-Zr] chemical bond was formed between Zr-polycations and [SiO4] tetrahedrons of montmorillonite. Decaleseence ratio of structure destroy of Zr-pillared montmorillonite was up to 1 625 J/g （montrnorillonite is 44 J/g）. Specific surface of Zr-pillared montmorillonite was two times of montmorillonite. It is shown that the thermal stability and surface activation of Zr-pillared montmorillonite are much better than those of montmorillonite.