硅酸镁锂的人工合成及有机改性研究进展

对硅酸镁锂的合成、有机硅酸镁锂的制备及应用等进行了综述。人工合成硅酸镁锂大多采用水热法及微波法。通过原位法、离子交换法或吸附法可以对硅酸镁锂进行有机改性。有机改性后硅酸镁锂的界面性质由亲水性变为亲油性,在有机介质中的分散性得到提高。有机改性硅酸镁锂可用作吸附剂处理重金属离子或染料污染的废水,制备聚合物/粘土复合材料,制备催化剂、催化剂载体等。随着有机—无机纳米复合材料研究的快速发展,硅酸镁锂的有机化改性得到了国内外学者的广泛关注。

Research Progress of Synthetic Hectorite and Organo-Hectorite

The research progress of synthetic hectorite,organo-hectorite and their application are summarized in this paper.Hydrothermal crystallization and microwave synthesis of heetorite are discussed.The organic modification of hectorite is performed mainly by the in-situ method,ion exchange reaction and adsorption method.The dispersibility of the synthetic organo-hectorite in organic solution can be improved.Surface modifications of hectorite have received more and more attentions because it allows the creation of new materials and new applications such as adsorbents of toxic metals and organic pollutants in water,polymer-clay nanocomposites,catalysis,etc.