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Influence of Layer Cations on the Properties of Montmorillonites

Lin Zuxiang Tian Shunbao Yu Huijun (Shanghai Institute of Ceramics,Academia Sinica)Deng Mengxiang Xu Rongqi (Institute of Geochemistry,Academia Sinica,Guiyang)  
The montmorillonites with different layer cations(monovalent Li,Na,K,Rb,Cs;divalent Mg,Ca,Sr,Ba:and trivalent Y,La,Nd,Eu)were prepared by ionexchange method and the influence of the layer cations on the properties of themontmorillonites were investigated.The dehydration of the adsorption and layer wa-ter of the montmorillonites could occur as a mono-process or in two stages depend-ing on the different layer catons.The electrical charges of the layer cations hadmuch stronger influence on the conductivity of the montmorillonites than their ionicradii had.
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