高岭石-乙酸钾插层复合物的研制

Development of Kaolinite-Potassium Acetate Intercalation Composites

研究高岭石-乙酸钾插层复合物的制备和表征方法,讨论时间和温度对插层反应的影响.实验结果表明,在水的参与下,乙酸钾可以直接插入高岭石层间,使高岭石的d001值由0.722 3 nm增加到1.160 0 nm左右,插层率可达90%以上.红外光谱显示,水和乙酸钾共同插入到高岭石的层间,并与高岭石的内表面羟基形成了氢键.所制备出的高岭石-乙酸钾插层复合物,可以直接用作高岭石-有机物插层复合物的前驱体.

In this dissertation, kaolinite-potassium acetate intercalation compounds were prepared and characterized, The influence factors on intercalation, including reaction time and temperature were discussed mainly. Experiment data show that potassium acetate can directly insert between the inner layer of kaolinite under the participation of water. As a result, the c-axis spacing （d001） of kaolinite-potassium acetate intercalation composite increased to 1. 160 0 nm from 0. 722 3 ran of kaolinite. And the intercalation rate reached 90%. Fourier transform infrared （FT-IR） spectrum indicate that water insert the inner layer of kaolinite together with potassium acetate, which form hydrogen bond with the inner surface hydroxyl of kaolinite. The kaolinite-potassium acetate intercalation composites prepared by means mentioned in this paper can use as the precursor for preparation of kaolinite-organic intercalated compounds directly.