不同金属离子层状双氢氧化物制备及表征  

Preparation and characterization of layered double hydroxide with different metallic ions

作　　者：刘娅[1] 王玉忠[1] 

机构地区：[1]四川大学化学学院环境友好高分子材料教育部工程研究中心,四川成都610064

出　　处：《化学研究与应用》2009年第6期883-887,共5页Chemical Research and Application

基　　金：国家杰出青年科学基金(50525309)资助

摘　　要：本文采用恒定pH值共沉淀法制备六种层板金属离子不同的层状双氢氧化物(LDH)。通过傅立叶变换红外光谱仪(FT-IR)、X-射线衍射仪(XRD)和扫描电子显微镜(SEM)对LDH进行了表征,并利用热重分析(TG)研究了LDH的热分解行为。研究表明,不同金属离子对LDH的层间距、晶粒尺寸等参数有一定影响,团聚程度也有较大的差异。Six kinds of layered double hydroxides （ LDH＇ s ） with different metallic ions were prepared using co-precipitation method at constant pH value. Fourier transform infrared spectroscopy （FTIR）,X-ray diffraction （XRD） and Scanning electron microscope （SEM） were used to characterize the chemical and physical structure of LDH＇ s. The results showed that different metallic ions had a certain influence on the interlayer distance ,cry. stallite size and other characteristic parameters of LDH＇ s. There were distinctions among the extents of agglomeration of different LDH＇ s. Thermal decomposition behavior was investigated using the thermogravimetric （TG） analysis.

关 键 词：层状双氢氧化物 晶粒尺寸 热分解行为 

分 类 号：O636.13[理学—高分子化学]