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以钠基蒙脱石为基质材料、钛酸丁酯为钛源,在Ti/蒙脱土=15mmol/g、H/Ti=2 5mol/moL、HCl=5mol/L的条件下,以不同体积比的丙酮与水的混合溶液为溶剂制得了钛交联蒙脱土纳米复合材料(Ti PILCs)。用X射线粉末衍射(XRD)和N2 吸附脱附实验对材料进行表征。结果表明:V水∶V丙酮=1∶2时,层间距达3 .37nm,比表面达389 .1m2 /g,产率为未加丙酮时的2 3倍。说明在Ti PILCs制备过程中,丙酮的加入对蒙脱土层间引入较大粒径的钛聚合羟基阳离子,促进钛聚合羟基阳离子与钠离子交换是有利的。
With sodium montmorillonite as matrix material and butyl titanate as titanium source, under the conditions of Ti / montmorillonite = 15mmol / g, H / Ti = 25mol / mol and HCl = 5mol / Titanium-crosslinked montmorillonite nanocomposites (Ti PILCs) were prepared using a mixed solvent of acetone and water as solvent. The materials were characterized by X-ray powder diffraction (XRD) and N2 adsorption-desorption experiments. The results showed that when Vwater: V acetone = 1: 2, the interlayer distance was 3.37nm and the specific surface was 389.1m2 / g, the yield was 23 times of that without acetone. This indicates that the addition of acetone into the montmorillonite layer in the preparation of Ti PILCs introduces titanium polymeric hydroxy cation with larger particle size and facilitates the exchange of the titanium polymeric hydroxy cation and sodium ion.