摘要
以高岭土为原料,制备了高岭土/二甲基亚砜(dimethylsulfoxide,DMSO)插层复合物。利用X射线衍射(X-ray diffraction,XRD),Fourier红外光谱(Fourier transform infrared spectracopy,FTIR),热重-差热分析(thermogravimetric-differential thermal analysis,TG-DTA)对制备的样品进行了表征。采用正交实验分析了反应温度、反应时间、水以及高岭土固含量等因素对插层效率的影响。XRD和FTIR分析显示,DMSO进入高岭石层间,并以高度取向的形式存在,高岭石的层间距由0.714 nm增大到1.120 nm。TG-DTA显示,层复合物在130℃左右开始分解,发生脱嵌反应;正交分析显示温度对插层率的影响最为显著,反应时间和水的影响次之,高岭石固含量的影响最小,最优化条件为:反应温度75℃;反应时间36 h;含水量为10%;高岭石固含量15%。
The kaolinite/dimethylsulfoxide intercalation composite was synthesied and using kaolinite from Zhangjiakou as raw material. The sample was characterized by X-ray diffraction （XRD）, Fourier transform infrared spectracopy （FTIR） and thermogravim- etry （TG） and differential thermal analysis （DTA）. The effects of reaction temperature, time, water content and solid content on the intercalation were investigated by orthogonal experiments. The analysis of XRD and FTIR show that the interlameller space of kaolinite was expanded from 0.714nm to 1.120nm, which display that the DMSO molecules was intercalted into kaolinite and exist in highly oriented arrangement in the interlayer of kaolinite. TG-DTA shows the composite is stable until 130 ~C and starts derintecalated. The results of orthogonal analysis show that the temperature is the most ramarkable factor, the others followed are the reaction time, water contents, and the solid cotents. The optimum process conditions are the reaction temperature of 75 ℃, the reaction time of 36 h, water content of 10% and the solid content of 15%.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2011年第10期1637-1643,共7页
Journal of The Chinese Ceramic Society
基金
国家自然基金重点(51034006)资助项目
关键词
高岭石
二甲基亚砜
插层
正交分析
kaolinite
dimethylsulfoxide
intercaltion
orthogonal analysis
