摘要
以高岭石/二甲基亚砜插层复合物作为前驱体,采用二次取代法制备了高岭石/咪唑插层复合物,采用X-射线衍射、红外光谱、激光粒度分析等技术对产物进行表征。实验结果表明:咪唑已成功插入到高岭石中。XRD分析表明:在高岭石/咪唑插层复合物中,高岭石的层间距由0.72nm扩张到1.125nm,插层率达到了71.7%,红外光谱研究表明,插层中咪唑分子中的N-H基与高岭石内表面羟基之间产生了N-H-OH作用,形成了新的氢键;热重-差热曲线(TG-DTA)分析表明:高岭石/咪唑插层复合物在130～220℃的温度范围内,会发生咪唑的脱嵌过程,粒度分析表明:高岭石粒径小于5μm的颗粒占总颗粒数的比例降低了12.66%。
A kaolinite-para imidazole intercalation compound was prepared by displacement method using a kaolinite-dimethyl sulfoxide intercalation compound as a precursor. The product was characterized by X-ray diffractometry （XRD）, Fourier-transformed infrared spectroscopy （FTIR）, thermogravimetry and the granularity analyses apparatus. The XRD showed that the basal spacing of kaolinite increased from 0.72nm to 1.125nm, and the apparent intercalation rate of product was 71.7%. The IR spectrum indicate the new hydrogen bonding was formed in the N-H-OH interaction between the N-H in the imidazole molecules from intercalation chemicals and the hydroxypyzidone （-OH） in the inner surface of kaolin. The average particle size of the products has increased, and the percent for the particles which radius is less than 5 micron has decreased 12.66%.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2010年第8期36-38,50,共4页
China Ceramics
基金
河北理工大学校基金资助项目
编号:z0804
关键词
高岭石
咪唑
插层复合物
kaolin, imidazole, intercalation complex
