微波辅助化学反应制备纳米高岭石

为提高高岭石比表面积、孔隙率和吸附容量，利用微波辅助化学反应制备了尿素-高岭石复合物，进一步微波辐射使层状高岭石完全剥离并粉碎，经分散后得到了纳米高岭石。利用傅立叶红外光谱仪（FT-IR）、X射线粉晶衍射仪（XRD）、扫描电镜（SEM）和透射电镜（硎）进行了过程中样品结构、形貌和尺寸方面的表征。结果表明：同等条件下，通过微波辅助剥离并粉碎层状高岭石，时间只需30min，约为单一球磨的1／20，分散后的纳米高岭石平均粒径约为150nm。

Preparation of nano-kaolinite by microwave-assisted chemical reaction

In order to enhance the surface area, hole density and adsorption quantity of kaolinite, the authors carried out dispersion treatment of the sheet-like kaolinite after delamination and shattering based on the preparation of urea-kaolinite complex by microwave chemical reaction under further radiation. As a result, nano-kaolinite was obtained. The structures of the samples under processing were studied by Fourier transformation infrared spectrometry (FT-IR) and X-ray diffraction (XRD). The morphologies and sizes of the samples were examined by scanning electronic microscopy (SEM) and transmission electronic microscopy (TEM). The results show that, under the same condition, the time spent on delamination under microwave assistance is only 1/20 of the time spent on the single mechanical method, and that the average size of the nano kaolinite is 150 nm.