摘要
山西大同煤系高岭土与醋酸钾和少量水的混合物经研磨、烘干,不但使醋酸钾分子快速插入高岭土层间,得到了高岭土/醋酸钾插层复合物,而且研磨也促进了高岭土的剥离,缩短了插层时间,减少了醋酸钾的用量。水洗清除插层复合物中的醋酸钾后,SEM观察表明高岭土被剥离成细小的鳞片状,粒径小于2μm;根据XRD图谱,经Scherrer方程计算,表明高岭土被剥离成二维纳米材料。
The potassium acetate is intercalated into layers of kaolin quickly and kaolin-potassium acetate intercalated complex is prepared by grinding the mixture of coal-series kaolin from Datong, Shanxi, potassium acetate and a little water and drying them. At the same time, kaolin is exfoliated rapidly during grading. This method not only shortens intercalation time, but also reduces the quantity of potassium acetate. Watering kaolin-potassium acetate intercalated complex, kaolin is exfoliated into fine slice and the size of grain is less than 2μm. According to the x-ray powder diffraction and the equation of Scherrer, kaolin is exfoliated into two dimensions nano material.
出处
《矿产保护与利用》
2004年第6期16-20,共5页
Conservation and Utilization of Mineral Resources
基金
国家863项目<利用煤工业废弃物制备超细高岭土及高档瓷质砖新产品的产业化技术开发>资助(编号:2002AA001039)
关键词
煤系高岭土
大同
醋酸钾
插层
插层复合物
剥离
coal-series kaolin, Datong
potassium acetate
intercalation
intercalated complex
exfoliation
