高岭石/醋酸钾插层复合物的制备及其影响因素  

The Preparation and Influencing Factors of Kaolinite/Potassium Acetate Intercalation Composites

作　　者：刘钦甫[1] 程宏飞[1] 杜小满[1] 刘素青 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]河南省煤炭地质勘察研究院,河南郑州450052

出　　处：《矿物学报》2010年第2期153-159,共7页Acta Mineralogica Sinica

基　　金：国家863计划项目(2008AA06Z109)

摘　　要：利用浸泡法制备了高岭石/醋酸钾插层复合物,进行X射线衍射分析,探讨了影响插层的因素。结果表明,醋酸钾对高岭石的插层作用与高岭石的结晶度、插层剂浓度、pH值密切相关。高岭石结晶度越高,越有利于插层作用的进行;高浓度的插层剂(≥30%)可以在较短的时间(12 h)内完成插层作用,而低浓度的插层溶液则需要非常长的时间(≥144 h)才能完成,且获得的插层率较低;pH=10的弱碱性条件最有利于插层的进行;温度对高岭石的插层作用影响不大,在室温就可获得较好的插层效果。The kaolinite/potassium acetate composite was prepared by using immersion method.Based on the technique of X-ray diffraction,the factors influencing the intercalation were investigated.The results show that the intercalation of kaolinite by potassium acetate is greatly related to the crystallinity of kaolinite,concentration of intercalated agent,and pH value.The well ordered kaolinite is easy to be intercalated.Higher concentrations of intercalated agent（≥30%） can complete the intercalation in a short time（12 h）,but lower concentrations make it longer（≥144 h）.The weak alkaline condition of pH=10 is the most suitable to the formation of the composite.The temperature has a little influence on the intercalation.A good intercalated composite can be gained just at room temperature.

关 键 词：高岭石 醋酸钾 插层复合物 影响因素 

分 类 号：P578.964[天文地球—矿物学] P579[天文地球—地质学]