有机柱撑水云母的制备及表征

经过“钡/钾离子交换”后的黑云母变为边缘区域为蛭石层，中央区域为云母层的水云母. 用十八烷基三甲基氯化铵对水云母进行有机柱撑，得到有机柱撑水云母. 通过X射线衍射测试和傅里叶转换红外光谱对粉末样品进行表征，研究了十八烷基三甲基铵离子对水云母层间距的影响及在夹层中的排布模式. 结果表明，水云母中全部蛭石层和部分云母层被十八烷基三甲基铵离子撑大，柱撑层层间距为2.8 nm，层间十八烷基三甲基铵离子以单层倾斜结构排布，倾斜角约为45°

Preparation and Characterization of Organic Pillared Hydromica

Hydromica was obtained with vermiculite layer at edge area and mica layer in central area by exchanging Ba2+ and K+ in biotite. The organic pillared hydromica was produced by stearyl trimethyl ammonium chloride pillaring hydromica. The powder samples were characterized by X-ray diffraction measurements and Fourier transform infrared spectroscopy，the effects of STA+ on basal spacing of hydromica and the arrangement of STA+ in the interlayer were explored. The results show that all the vermiculite layers and some mica layers were pillared by STA+ in hydromica，and the basal spacing of pillaring layer is 2.8 nm. Intercalated STA+ formed a monolayer structure with angle of 45°.