蛭石矿物材料层间水的赋存状态研究

利用红外光谱研究了蛭石矿物材料层间水的赋存状态。结果表明：蛭石晶层的层间距主要受层间水分子层数的影响，而后者又主要由层间阳离子的离子势大小决定。在层间都为2层水的情况下，蛭石层间距与层间阳离子的离子半径成正相关，这是由于蛭石层间为强静电场的缘故。利用Fourier自消卷积分峰技术，得到蛭石层间水的反对称伸缩振动、对称伸缩振动和弯曲振动的泛音等红外吸收谱，其中对称伸缩频率与层间水脱失温度成负相关，弯曲振动频率及其泛音与层间水脱失温度成正相关。

EXISTING STATUS OF INTERLAYER WATER IN VERMICULITE MINERAL MATERIAL

The existing status of interlayer water in vermiculite was investigated with infrared spectrum. The results indicate that the interlayer space is influenced by the layers of water molecules which is decided by ionic potential of interlayer cations. At the condition of two-lay interlayer water, the size of interlayer space in vermiculite is positively related to ionic radius of interlayer cations due to the strong static electric field. The anti-symmetry stretching vibrations, symmetry stretching vibrations, the bending vibrations and its overtone were obtained by Fourier self-deconvolution differentiating technology. The symmetry stretching vibrations is negatively related to dehydration temperature, while the bending vibrations and its overtone are positively related to dehydration temperature.